@article{ author = {Hamedi, Samaneh and Ghorbani, Mohammad hadi and Kordrostami, Zoheir}, title = {Auto Alignment of Devices in Optical Setups Using Image Processing Technique in Lab-View}, abstract ={The alignment of opto-mechanical components in the optical setups affects the measurement accuracy. In this paper we describe a low cost auto-alignment of star tracker components mounted on the satellite. In the presented optical setup, the components on the motorized optical mount will be auto aligned using image processing in Lab-view software. The accuracy of the measurement is related to the motorized optical mount. In this work, the accuracy of alignment in 3 directions is 0.01 degree and repeatable.}, Keywords = {alignment, optomechanics, image processing, Lab-View}, volume = {26}, Number = {0}, pages = {1-4}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1964-en.html}, eprint = {http://opsi.ir/article-1-1964-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Ranjbaran, Maliheh and Ajami, Atefeh and Bonjakhi, Mohsen and Arabsorkhi, Mahbubeh}, title = {Dimension Measurement of Objects with an Optical Collimator System based on optical Edge Detection Method}, abstract ={Dimension Measurement of objects has been one of the most important issues in the production process. Related to recent advances in measuring apparatus, optical methods have been focused a lot of attention due to their special advantages. In this study, we have investigated the feasibility of using high power LEDs and telecentric system for improving system features. In the signal processing section, the edge detection has been carried out to obtain the outside dimension of the test object. This technique is capable of high resolution and high speed measurement of dimensions and thus has great potential for using in industrial automation systems.}, Keywords = {Dimension Measurement, Optical Collimator, Telecentric System, Edge Detection, Image Processing}, volume = {26}, Number = {0}, pages = {5-8}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1965-en.html}, eprint = {http://opsi.ir/article-1-1965-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {TarighiTabesh, Najmeh and Ranjbaran, Maliheh and Khalkhali, Mohammad Hoesein and Tehranchi, Mohammad Mehdi}, title = {Atomic magnetometer with microscopic spatial resolution}, abstract ={Atomic magnetometers have attracted a lot of attention in high resolution measurements such as microscopic imaging. In these imaging techniques, high spatial resolution and also high sensitivity are required. In this paper, we have proposed a method to increase the spatial resolution of a high sensitivity atomic magnetometer based on utilizing the magnetic flux concentrators which are made of soft magnetic materials with high magnetic permeability. For this purpose, using finite element analysis software, the efficiency of concentrator-magnetometer on the spatial resolution and sensitivity has been investigated. Our results show that utilizing sharp tip magnetic flux concentrator, which is made of soft magnetic material with high permeability, can enhance the spatial resolution to microscopic dimensions.}, Keywords = {Spatial resolution, Sensitivity, Atomic magnetometer, Magnetic flux concentrator, Magnetic permeability.}, volume = {26}, Number = {0}, pages = {9-12}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1966-en.html}, eprint = {http://opsi.ir/article-1-1966-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Karimi, Roshna and MohajerMazandarani, Salman and Aslroosta, Mohamadreza and Shadfar, Mohadeseh}, title = {Optical discrimination of methicillin-resistant staphylococcus aureus and methicillin-sensitive staphylococcus aureus}, abstract ={   In this experiment samples of Staphylococcus Aureus bacteria in two species of methicillin resistant and sensitive were cultured in standard method then they were fixed on glass lamellae without staining process. Optical absorbance of bacteria in linear regime with wavelength 532nm was measured using continuous-wave laser. Meanwhile non-linear behaviors of bacteria with laser intensity 106  were investigated. The results showed that there was not such a great difference between linear absorbance of two species of bacteria but the non-linear refractive index of those bacteria which were methicillin resistant were absolutely different from those species who were sensitive to methicillin. Resistant bacteria had negative refractive index and sensitive bacteria had positive refractive index which all were in orders of 10-5      }, Keywords = {Maximum five keywords related to the paper subjects, sorted in alphabetical order separated by comma are required.}, volume = {26}, Number = {0}, pages = {13-16}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2234-en.html}, eprint = {http://opsi.ir/article-1-2234-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Fariborz, Hasti and Mohajermazandarani, Salman and Majlesara, Mohammad Hossei}, title = {Investigation of optical properties of healthy and thalassemic erythrocyte}, abstract ={Diagnosis of the disease from biomedical disorder is one of the most important issues for interdisciplinary researchers. There are many methods for studying biological cells; the most non-invasive and precise are optical methods. In this research, the optical parameters of the blood of healthy persons and thalassemia patients have been investigated to find differences between them. Blood samples were fixed on a transparent slide and irradiated with 532 nm laser light and optical density, nonlinear phase shift and nonlinear refractive index of all samples were measured. The results showed that healthy and patient blood samples had evident nonlinear optical behaviour. The nonlinear phase change of the healthy samples was, on average less than the patient samples.}, Keywords = {Erythrocyte, Z-Scan, Optical Density, Non-Linear Refractive Index}, volume = {26}, Number = {0}, pages = {17-20}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1967-en.html}, eprint = {http://opsi.ir/article-1-1967-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Khalilisabet, Mona and Mohajermazandarani, Salm}, title = {Computing Scattering Cross Section of Gold Nanoparticles and SiO2@Au Core-Shell and Size Effect on the Scattered Wave Using COMSOL MULTIPHYSICS Software}, abstract ={In this paper scattering, absorption and extinction cross section of spherical Gold nanoparticle and Silica/Gold core/shell was computed using COMSOL MULTIPHYSICS based on Poynting vector integral and heat generated by loss of scattered wave. Effect of change in size of nanoparticle on the scattering cross section also have been studied by applying frequency and size dependencies of refractive index of Gold and Silica.}, Keywords = {Scattering Cross Section, Extinction Coefficient, SiO2@Au nanoparticle, Gold Nanoparticle}, volume = {26}, Number = {0}, pages = {21-24}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1968-en.html}, eprint = {http://opsi.ir/article-1-1968-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Jamali, Mohammad and Sheykhlari, Sara and MohajerMazandarani, Salman and MajlesAra, MohamadHosei}, title = {Investigation of linear and nonlinear optical properties of pure curcumin and curcumin-graphene quantum dots conjugation to trace Amyloid-β aggregations}, abstract ={The accumulation of beta amyloid protein (Aβ) in the human brain has been implicated in the development of Alzheimer's disease. In this study, the optical properties of pure curcumin and curcumin-graphene quantum dots conjugation to trace accumulation of beta amyloid protein have been reported. Curcumin was first prepared at a special concentration then a certain amount of quantum dots was added to the curcumin solution and its effect on the optical properties of the solution was investigated. The results show that adding quantum dot to curcumin decrease the linear absorption coefficient and nonlinear refractive index. This values are  and  order of magnitude.}, Keywords = {Curcumin, Graphene quantum dots, Alzheimer, Z-scan .}, volume = {26}, Number = {0}, pages = {25-28}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1969-en.html}, eprint = {http://opsi.ir/article-1-1969-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {KhademSadigh, Mahs}, title = {Investigation of media polarity effects on the linear and third order nonlinear optical properties of Azure B}, abstract ={In this paper, linear and third order nonlinear optical properties of Azure B were investigated in solvent media with different polarity. For this reason, spectroscopic and Z-scan techniques were used for investigation of optical properties of Azure B. According to the experimental results, Azure B dye tends to indicate positive solvatochromism behavior by increasing solvent polarity characteristics. Furthermore, solvent dipolarity/polarizability and solvent hydrogen bond acceptor abilities have significant roles on the saturable absorption properties of selected thiazine dye. Hence, media polarity as an important factor can be used for controlling the optical properties of Azure B.}, Keywords = {Solvatochromism, Solvent polarity, Spectroscopy, Z-scan}, volume = {26}, Number = {0}, pages = {29-32}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1970-en.html}, eprint = {http://opsi.ir/article-1-1970-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {KhademSadigh, Mahs}, title = {The molecular surrounding environment effect on the linear polarizability and first and second order hyperpolarizability of a azo dye in two different forms}, abstract ={In this research, microscopic linear and nonlinear optical properties of an azo dye in two different forms in solvent environments with different dielectric constant was investigated. For this reason, both DFT and spectroscopic methods have been used. The results indicate that molecular linear and nonlinear optical properties depend highly on the molecular structure and the properties of molecular surrounding environment. In this case, the maximum linear polarizability and first and second order hyperpolarizability were observed in azo form of molecule in DMSO with high dielectric constant. Therefore, by proper selection of molecular surrounding environment, it is possible to increase its linear and nonlinear optical properties.}, Keywords = {Azo, First order hyperpolarizability, Linear Polarizability, Second order hyperpolarizability.}, volume = {26}, Number = {0}, pages = {33-36}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1971-en.html}, eprint = {http://opsi.ir/article-1-1971-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Shahab, Samaneh and Amiri, Seyyed Hossein and Ranjkesh, Mohammad javad and Zahmatkesh, Javad and Mobasheri, Abolhasan and Darbani, Seyyed Mohammad Rez}, title = {Detection of Explosives by using Time-Resolved Stand-off Raman Spectroscopy}, abstract ={Raman spectra of TNT and PETN have been recorded on different backgrounds of Aluminum, soil and plastics from a distance of 30 m. Delay and gate time were used in order to eliminate the background fluorescence effect. The effect of applying delay time and gate width was not the same for different backgrounds. The results of this study show the improvement of the signal-to-noise ratio of Raman spectra by applying a gate time for the detector in case of the backgrounds with fluorescence.}, Keywords = {delay time, explosive compounds, gate time, stand-off Raman}, volume = {26}, Number = {0}, pages = {37-40}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1972-en.html}, eprint = {http://opsi.ir/article-1-1972-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Bakhshi, Hadi and Darudi, Ahm}, title = {Analysis of effective beam propagation parameters on a FSO link of optics lab. of University of Zanjan}, abstract ={In this paper, we describe the analysis and results of a FSO system which was designed and tested in Optic lab. of the University of Zanjan. The system provides a FSO communication link with the bandwidth about 150Mb/s, using a 1550nm laser under normal atmosphere condition for 120m distance between transmitter and receiver. Then, we discuss and report the some effective parameters, tip/tilt and scintillation, Cn2 and Fried’s length, which are very important on the performance and quality of the FSO link.}, Keywords = {Cn2, FSO, Scintillation and Turbulence}, volume = {26}, Number = {0}, pages = {41-44}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1973-en.html}, eprint = {http://opsi.ir/article-1-1973-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Arabjafari, Maliheh Sadat and Bayat, Farzaneh and Jamshidi-Ghaleh, Kazem}, title = {The Effect of the Polymerization Initiator’s Concentration on the Size of the PMMA Microspheres as the Building Blocks of the Opal Photonic Crystals}, abstract ={In this work, suspension polymerization is applied to fabricate monodisperse polymethylmethacrylate (PMMA) microspheres with different diameters and the effect of the polymerization initiator’s concentration on the size of the microspheres is studied. Then, the artificial opal photonic crystals are fabricated with PMMA microspheres using the vertical deposition via evaporation induced self-assembly method. Furthermore, the size of the microspheres and optical properties of opals are investigated.  It is shown that the concentration of the polymerization initiator plays a key role in specifying the size of the polymer microspheres and consequently the optical properties of the opal photonic crystals.}, Keywords = {Polymeric microparticles, Opal photonic crystals, Vertical deposition method, Suspension Polymerization}, volume = {26}, Number = {0}, pages = {45-48}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1974-en.html}, eprint = {http://opsi.ir/article-1-1974-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Aghbolaghi, Reza and SahebghoranChrehJaloo, Habib}, title = {Effect of Axicon Apex Curvature on Resonator Behavior in Thin Disk Lasers}, abstract ={In this article the effect of the axicon apex curvature on the transvers profile of the dominant mode has been studied in the axicon based thin disk laser configuration. To extracting of the dominant mode, the scalar Fox-Li method has been used along with numerically solving the Huygens Fresnel diffraction integral. The results show that the hyperboloid parameter and the angle of the curved apex axicon just has effects on the dominant mode of the resonator and the thickness of axicon has not effect on its profile.}, Keywords = {Thin disk lasers, Axicon based resonators, Apex curvatures of the axicon}, volume = {26}, Number = {0}, pages = {49-52}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1975-en.html}, eprint = {http://opsi.ir/article-1-1975-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Salimian, Sohaila and Ghasemi, Mahnaz and Tavassoly, Mohammad Kazem}, title = {Quantum repeater protocol with superconducting circuits without Bell state measurement}, abstract ={The long-distance entanglement distribution is an important issue in quantum information processing. Our aim in this paper is to design a new protocol of quantum repeater by superconducting qubits to distribute entanglement between two superconducting qubits which are far from each other. So, we consider four pairs of entangled qubits  where . Entanglement between each adjacent separable qubits (1,4) and (5,8) is created by performing interactions in the presence of an external magnetic field between the separable superconducting qubits (2,3) and (6,7) and operating proper measurement. Finally, the entanglement is distributed between two target qubits (1,8) by performing interaction between qubits (4,5) and operating proper quantum measurements. The entanglement is considered via concurrence and the success probability of the distributed entangled states is calculated. The behavior of the above two-mentioned parameters is periodic, however, they possess acceptable and satisfactory values.}, Keywords = {Success probability, Quantum repeater, Concurrence, Entanglement, Superconducting qubits.}, volume = {26}, Number = {0}, pages = {53-56}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1976-en.html}, eprint = {http://opsi.ir/article-1-1976-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {ShafiiMousavi, Narges and Parvin, Parviz and Eilchi, Maryam}, title = {Investigation of Amplification Parameters in Q-switched Fiber Oscillator-Amplifier System}, abstract ={In this paper, an analytical model is presented for master-oscillator power-amplifier (MOPA) of Q-switched double-clad ytterbium doped fiber system. First, the time-dependent rate equations are solved numerically by the finite difference method and the output pulse characteristics are obtained. For more amplifying, the pulse is injected to the amplifier and the gain and saturation coefficients are obtained by using the best fitting between the data obtained from the solving of the rate equations and the transient amplification equation, based on the least squares method (LSM). Finally, the dependence of different cavity parameters on small signal gain and saturation power are analyzed.}, Keywords = {Gain coefficient, Saturation power, Q-switched, Fiber laser, Master-oscillator power-amplifier.}, volume = {26}, Number = {0}, pages = {57-60}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1943-en.html}, eprint = {http://opsi.ir/article-1-1943-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Habibimoghaddam, Fatemeh and Mehrzad, Hossein and Shirkavand, Afshan and Mohajerani, Ezeddin and Mohammadimasoud, Mohamm}, title = {Lithography-free visible plasmonic super absorber based on Ag nano-island layer}, abstract ={In this paper using the vapor deposition method, a super absorbing structure based on localized surface plasmon resonance (LSPR), comprised of metal/dielectric/metal nano-island (NI) layer is designed and fabricated. The results of this research demonstrate high wide-band absorption of this super absorbing structure. Also, the sensitivity of the structure as a sensor of the refractive index with respect to the surrounding medium was investigated. One of the properties of this sensor is the color change that is observable with the eye when the refractive index of the surrounding medium is changed.}, Keywords = {Absorption, Localized Surface Plasmon Resonance, Plasmonic, Super absorber}, volume = {26}, Number = {0}, pages = {61-64}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1977-en.html}, eprint = {http://opsi.ir/article-1-1977-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Hosseini, Mandana sadat and Yazdani, Elnaz and Sajad, Batool}, title = {The effect of solvent on random laser of Rhodamine 6G dye solution with ZnO@C-N microstructures}, abstract ={In this study, Carbon and Nitrogen doped Zinc oxide microstrcturess as scatterer centers in Rhodamine 6G dye as gain media has been selected and synthesized. The existence of the sheet- like structures in ZnO@C-N sample due to the Carbon and Nitrogen dopants, is improves the scatterers morphologies .Later on, the random laser emission for two independent samples for the same concentration of gain media and scatterer centers, with different solvents in order to evaluating the effect of the solvent on output spectrum,  have been studied. The results show higher polarity of solvent leads increasing the red shift and decreasing the spectrum intensity and does not have any significant effect on localization threshold and output modes.}, Keywords = {Rhodamine 6G, Random Laser, Microstructures, solvent.}, volume = {26}, Number = {0}, pages = {65-68}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2230-en.html}, eprint = {http://opsi.ir/article-1-2230-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Sedighi, Farzaneh and Mohammadi, Tahereh and Ghasemi, Hesam and Madanipour, Khosro and Parvin, Parviz}, title = {Polarimetry of Glucose Using linear He-Ne Laser}, abstract ={Diabetes is a chronic metabolic disorder that requires careful monitoring of the blood glucose levels. Indeed, glucose, as a kind of sugar, is a source of energy in cell function regulating the metabolism. Here, the polarimetric method has been analyzed, based on measuring the optical properties of glucose solutions. For this purpose, a He-Ne laser with a wavelength of 632 nm is utilized in terms of polarimetry according to rotating quarter wave retarder to obtain the Mueller matrix elements. Finally, the optical properties such as polarizance, depolarization, retardance and diattenuation determined in various conditions by analyzing the Mueller matrices.}, Keywords = {Glucose, Diattenuation, Depolarization, Polarimetry, Mueller matrix.}, volume = {26}, Number = {0}, pages = {69-72}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1978-en.html}, eprint = {http://opsi.ir/article-1-1978-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Salimianrizi, Saeid and Jandaghi, Maryam and Mohammadzaheri, Zahra and Alipour, Samira and Javadidashkasan, Mohammad and Hajinia, Elmira and Nabavi, Seyed has}, title = {Design and fabrication of a 10ps passively mode-locked TEM00 Nd:YVO4 based on a SESAM}, abstract ={In this paper design and fabrication of a 10ps passively mode-locked TEM00 Nd:YVO4 based on a semiconductor saturable absorber mirror(SESAM) is reported. When the incident diode pump power was 3.5 W, 500mW average output power at 82 MHz repetition rate is achieved. This design produces stable continuous mode-locked pulses at 1064. In addition, presented experiment is set-up with some data which are obtaind by LASCAD simulation.}, Keywords = {Mode locked, Nd:YVO4 laser, Saturable absorber , Picosecond}, volume = {26}, Number = {0}, pages = {73-76}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1980-en.html}, eprint = {http://opsi.ir/article-1-1980-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Haghmoradi, Hamid and Arabanian, Atoosa Sadat and Massudi, Rez}, title = {Generation of 1.3 W continuous green laser at 532 nm by passive resonant enhancement technique in a fiber laser}, abstract ={In this paper design and fabrication of an Yb-doped fiber laser at 1064nm along with a Fabry-Perot bow tie cavity inside the fiber laser cavity is presented. The circulating power inside the laser cavity is enhanced by the intracavity passive locking technique from 5.1W in the main cavity to 52W in the Fabry-Perot cavity. By placing an LBO crystal within this resonant enhancement cavity, efficiency of the second harmonic of laser in continuous regime is increased from 0.05% to 25% that result to 1.3W light at 532nm. Thus, the efficiency of the second harmonic generation of continuous light in the LBO crystal is increased about 486 times.}, Keywords = {Resonant enhancement cavity, second harmonic generation, bow tie Fabry-Perot cavity}, volume = {26}, Number = {0}, pages = {77-80}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1981-en.html}, eprint = {http://opsi.ir/article-1-1981-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Ghomashi, Fatemeh and Khalesifard, Hamid rez}, title = {Assessment of dust layer height and investigation of atmospheric aerosol types over the Urmia Lake using CALIOP space-borne Lidar}, abstract ={The Urmia Lake has faced a severe drought scenario in the last two decades. The dried parts of the lake bed can act as a source of salt particles that contaminate the lake's atmosphere and surrounding areas. In this study, aerosol layer optical depth, aerosol layer height and particulate depolarization ratio were selected from CALIOP Lidar data to evaluate dust layer height and investigate the type of atmospheric aerosols over the Urmia Lake. The aerosol layer height values show that dust layers over the atmosphere of Urmia Lake are commonly observed at 3.1 km. PDR values ​​indicate that the type of particles in the lake atmosphere include dust transported from outside sources, air pollutants originated from urban-industrial pollution, and salt particles originated from the dried lake bed. The results also show that Urmia Lake is predominantly active during the dry months of the year i.e. June to October and the mean PDR value of these salts particles is 0.16.}, Keywords = {Urmia Lake, Salt particles, Dust layer height, Particulate depolarization ratio}, volume = {26}, Number = {0}, pages = {81-84}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1982-en.html}, eprint = {http://opsi.ir/article-1-1982-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Razzaghi, Davood and Shahrokhabadi, Hossein and Goodarzi, Rez}, title = {Zeeman slower heat assessment without the utilization of axillary cooling system}, abstract ={In this research, Zeeman slower was introduced and designed as an essential part of the laser cooling technology. Present configuration consists of 10 vertically aligned solenoids with different lengths. Three dimensional temperature distribution of the devised instrument has been calculated through the finite element method.  Increment of the maximum temperature of Zeeman slower from 302 K to 340 K by the enhancement of applied current from 0.5 A to 2 A is demonstrated by the outcomes of the present study. In addition, growth of heat conduction coefficient of applied electrical insulator from 4 to 14 W/m.K leads to the 3 °C reduction of maximum temperature.}, Keywords = {Finite Element Method, Heat Assessment, Laser Cooling, Ohmic Heating, Zeeman Slower.}, volume = {26}, Number = {0}, pages = {85-88}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1983-en.html}, eprint = {http://opsi.ir/article-1-1983-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Ashkbar, Ali and Rezaei, Fatemeh and Attari, Farnoosh and Ashkevarian, Sabour}, title = {Breast cancer treatment by two methods of photodynamic and photothermal therapies by herbal phtosentesizer of curcumin loaded in composite nanoparticle}, abstract ={breast cancer treatment by aid of common methods of chemotherapy and radiotherapy caused serious damages into safe organs of human come down with cancer. In this paper, the breast cancer therapy is studied by combination of laser therapies methods of photothermal and photodynamic therapies accompanied by herbal drug of curcumin loaded in magnetic nanoparticles. Results of research showed 80 percent cancer treated of treatment group with less than 10 percent error. Cancer treatment with this inovative methods were utilized 6 times in 2 weeks. The duration of treatment for each sample was 10 minutes.}, Keywords = {photodynamic therapy, photothermal therapy, magnetic nanoparticle, photosentisizer drug, breast cancer}, volume = {26}, Number = {0}, pages = {89-92}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1985-en.html}, eprint = {http://opsi.ir/article-1-1985-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {RajabiGhaleh, Sajjad and AhmadiKandjani, Sohrab and Kheradmand, Rez}, title = {Encryption based on sweeping computational ghost imaging}, abstract ={In this paper we introduce new method for computational ghost imaging (CGI). This method call sweeping computational ghost imaging (SCGI). By introducing row and column sweep speckle patterns that was illuminated on the object, final image are retrieved via cross product of row and column matrices from images that are reconstructed with row and column sweep speckle patterns. Results of this method was performed both theoretical and experimental. This method was used for data encrypt by symmetric and asymmetric systems. In the symmetric, four main actions and select row and column of images are as private key. In the asymmetric, reconstructed images of row and column sweep speckle patterns and four main actions are as public and private keys, respectively. Because of final image reconstructed by cross product operator, therefore was used four main actions for decrypt of information.  Experimental and simulation results show that eavesdrop 100 percentage of data transfer, users couldn’t achieved basic information. In result, this method provide full security for data transfer between two users.}, Keywords = {Encryption, speckle pattern, and sweeping computational ghost imaging}, volume = {26}, Number = {0}, pages = {93-96}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1986-en.html}, eprint = {http://opsi.ir/article-1-1986-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Shabanloo, Mostafa and Khalkhali, Seyyed Mohammad Hossie}, title = {Iron oxide nanoparticles’ coating with pulsed laser ablation}, abstract ={In recent years, combing the optical properties of plasmonic nanoparticles (gold or silver) with magnetic properties of iron oxide nanoparticles in the form of core/shell has gained scientists’ attention. This combination decreases the toxicity of iron oxide nanoparticles and increases their stability and their applications and properties can be improved by changing the thickness of the shell. In this paper, first iron oxide nanoparticles were synthesized by co-precipitation method. Then by using pulsed laser ablation method, iron oxide nanoparticles were coated by gold. After synthesis iron oxide-gold core/shell nanoparticles were washed by magnetic separation to eliminate the gold nanoparticles. we used FE-SEM, UV-Visible and Fourier transform infrared spectroscopy for characterization. The spectroscopies confirmed the coating of iron oxide nanoparticles with gold.}, Keywords = {co-precipitation, pulsed laser, core/shell, iron oxide nanoparticles, spectroscopy}, volume = {26}, Number = {0}, pages = {97-100}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1987-en.html}, eprint = {http://opsi.ir/article-1-1987-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Nahani, Ali and Bazireh, Sirous and Yazdani, Elnaz}, title = {Optical response of CH3NH3PbBr3 perovskite thin films to the variations of procures stoichiometry}, abstract ={In addition to the successful use of organic-inorganic hybrid perovskite materials in photovoltaics, these materials have been shown significant role in perovskite based light emitting diodes development.  In this work, the effect of the variation precursor stoichiometry of CH3NH3PbBr3 perovskite on structure, morphology and optical response of thin films by using of ، XRD، UV-Vis، PL and TRPL characteristic techniques has been studied. The results revealed that, the crystallinity and morphology of perovskite thin films for precursor’s ratio of 1/25:1 compare to the case of 1:1 is improved and the radiative recombination rate of the carrier and photoluminescence intensity is increased.   }, Keywords = {Crystal, Light emitting diode, Perovskite, Photovoltaic, Radiative recombination}, volume = {26}, Number = {0}, pages = {101-104}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1988-en.html}, eprint = {http://opsi.ir/article-1-1988-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Eijadimaghsoodi, Parto and Heydari, Esmaeil}, title = {Fabrication of Dissolved-oxygen Sensor Using Platinum-octaethyl Porphyrin Complex in Polystyrene Matrix}, abstract ={Oxygen is one of the most crucial elements on Earth; therefore, the ability to measure it precisely is of great importance. Various methods of oxygen measurement has been developed up until now. In this paper, the aim is to present an optical in-situ oxygen sensor for dissolved oxygen sensing in water using a metalloporphyrin complex. Thus, a thin film is produced consisting of platinum octaethyl porphyrin as the oxygen sensitive probe doped in a polystyrene matrix using spin coating method. Considering the absorption spectrum of the dye, a 532nm Nd:YAG laser is used as the excitation light. The oxygen sensor is characterized by measuring the phosphorescence intensity for different oxygen concentrations.}, Keywords = {Dissolved-oxygen in water, phosphorescence, photonic sensor, platinum octaethyl porphyrin.}, volume = {26}, Number = {0}, pages = {105-108}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1989-en.html}, eprint = {http://opsi.ir/article-1-1989-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Habibi, Mahsa and Ghazyani, Nahid and Majlesara, Mohammad and Heydari, Esmaeil}, title = {Spectral changes of upconverting film of nano-emitter with a polydimethylsiloxane matrix in water for different temperatures}, abstract ={Recently, lanthanide nano-emitters have found numerous applications in biotechnology and biomedical engineering due to their remarkable properties. Upconversion mechanism, zero background emission, large anti-Stokes shift and being in the transmission window of living tissues are among these features. In this work, temperature-dependence of lanthanide nano-emitters is investigated. For this purpose, nano-emitters of : , are used in which is the host matrix. In these upconversion nano-emitters, ion acts as sensitizer and as activator which both are doped in the host material. Subsequently, these nano-emitters are doped in dimethylsiloxane elastomer for fabrication of nanocomposite films. Temperature of the film is increased in a water container, therefore the temperature-dependence of the emission of these nano-emitting composite is studied. ​}, Keywords = {Emission spectrum, Lanthanide, Polydimethylsiloxane, Upconversion nano-emitters}, volume = {26}, Number = {0}, pages = {109-112}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1990-en.html}, eprint = {http://opsi.ir/article-1-1990-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Mohammadhosseini, Zahra and Heydari, Esmaeil}, title = {Measurement of Phosphorescence Lifetime of a Platinum Complex Film in Polystyrene Matrix}, abstract ={In the recent years, phosphorescent metal complex materials have been increasingly used for fabrication of optical devices. Platinum is among the most commonly used metal complexes. In this work, measurement of phosphorescence lifetime of a platinum complex film in polystyrene matrix is performed. Thus, a film of PtOEP in PS matrix is prepared and excited with nano-second pulsed laser. Lifetime measurement is carried out by fitting a one-term exponential equation in time-dependent phosphorescence intensity.}, Keywords = {lifetime, metal complex, phosphorescence, polystyrene, PtOEP.}, volume = {26}, Number = {0}, pages = {113-116}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1991-en.html}, eprint = {http://opsi.ir/article-1-1991-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Baghbanitehrani, Zahra and Heydari, Esmaeil and Majlesara, Mohammad hossei}, title = {Investigation of Oxygen-dependent Phosphorescence of a Metal Complex Doped in the Polydimethylsiloxane Matrix}, abstract ={In this paper, we investigate the photoluminescence of platinum octaethylporphyrin doped in polydimethylsiloxane in the presence of oxygen. Polydimethylsiloxane is a suitable matrix for platinum porphyrin in aqueous media. An increase in dissolved-oxygen concentration in water leads to depletion of photoluminescence intensity. Quenching is the result of non-radiative energy transfer from excited phosphorescent molecules to the oxygen molecules via direct collision. Thus optical spectroscopy is employed to investigate the impact of dissolved oxygen concentration on the photoluminescence intensity.}, Keywords = {Oxygen, Photoluminescence, Platinum octaethylporphyrin, Polydimethylsiloxane}, volume = {26}, Number = {0}, pages = {117-120}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1992-en.html}, eprint = {http://opsi.ir/article-1-1992-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Khammri, Masoud and mansouri-Birjandi, Mohammad ali and Tavousi, Alirez}, title = {Design and simulation of XOR logic gate based on quantum dot semiconductor optical amplifiers}, abstract ={This paper deals with the simulation of XOR logic gate based on semiconductor optical amplifiers. Semiconductor optical amplifiers are mainly considered due to their positive features such as high efficiency, small dimensions and integration capability. The quantum dot semiconductor optical amplifier simulation is performed based on solving the fourth-order Runge-Kutta equations in Matlab software. In the following, we simulate the XOR logic gate in optisystem software at 1280 nm wavelength for which we find that the output signal has a quality factor of 67 and a power of 51 mW.}, Keywords = {Quantum dot, semiconductor optical amplifier, logic gate, XOR.}, volume = {26}, Number = {0}, pages = {121-124}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1993-en.html}, eprint = {http://opsi.ir/article-1-1993-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Ahmadpour, Afshin and Habibzadehsharif, Amir and Bahramichenaghlou, Faezeh}, title = {Design of Tunable Optical Fractional-Order Differentiator based on Ring Resonator}, abstract ={Todays, tunable optical integrated circuits play an important role in all-optical processors. In this paper, design and full-wave analysis of a tunable optical fractional-order temporal differentiator based on microring resonator have been presented. Applying forward and reverse bias voltages to the microring resonator based on P-I-N and P-N junctions and free carrier dispersion effect causes to change in the effective refractive-index, operating regime of the microring resonator and the order of differentiation; thus, the tunability of the circuit has been realized. The desired performance of the designed tunable optical differentiator has been confirmed considering an ultra-fast Gaussian input pulse with temporal FWHM of 6.3 ps.}, Keywords = {Tunable differentiator, Fractional order differentiator, Microring resonator, Signal processing, Free carrier dispersion.}, volume = {26}, Number = {0}, pages = {125-128}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1994-en.html}, eprint = {http://opsi.ir/article-1-1994-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Zareifarani, Mozhgan and Parvin, Parviz and Gholami, Shirin and Zare, Zahra and Jafargholi, Amir}, title = {LIBS analysis and comparison of the copper sample in the simulated Mars and Earth gaseous atmosphere}, abstract ={In this paper, we have attempted using laser induced breakdown spectroscopy (LIBS) of pure copper as target inside a vacuum chamber under simulated Mars and Earth atmospheres at pressures ranging from laboratory pressure to near atmospheric pressure. At Martian atmospheric pressure, the emission spectra of plasma derived from copper sample were higher than those of Earth's atmosphere. Also, the changes in plasma parameters of the sample were quantitatively investigated in terms of intensity, temperature, electron density and ionization degree and the results are plotted in graphs. At pressure 10 mbar that is Mars typical pressure and with 100 mJ laser tap its observed ionize peaks in spectrum when ionization degree is high.}, Keywords = {LIBS, Plasma parameters, Simulated Mars and Earth gaseous atmosphere.}, volume = {26}, Number = {0}, pages = {129-132}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1944-en.html}, eprint = {http://opsi.ir/article-1-1944-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Zare, Zahra and Parvin, Parviz and Jafargholi, Amir and Zarei, Mozhgan and Gholami, Shiri}, title = {Urea Spectroscopy at Different Concentrations}, abstract ={In this paper, optical spectroscopy could uses for medical devices, UV-Vis, photoluminescence(PL) and laser induced fluorescence spectroscopy(LIF) are employed to investigate different concentration of urea. The effect of urea concentration on the emission wavelength of dyes(RdB,Rd6G, Methylene Blue) was investigated by using LIF. It is shown that increasing in urea concentration leads to decrease in the photoluminescence spectrum and increase in absorbance spectrum. In the study of the effect of urea concentration on the emission wavelength of methylene blue, increasing in urea concentration in this dye caused blue spectral shift and in the two other dyes the spectral shift have not been observed, it could find urea has no direct reaction with these dyes.}, Keywords = {Laser Induced Fluorescence, Photoluminescence, Spectral Shift, Urea, UV-Vis.}, volume = {26}, Number = {0}, pages = {133-136}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1945-en.html}, eprint = {http://opsi.ir/article-1-1945-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Zare, Zahra and Parvin, Parviz and Jafargholi, Amir and Gholami, Shirin and Zareifarani, Mozhg}, title = {Cholesterol Spectroscopy at Different Concentrations}, abstract ={In this paper,optical spectroscopy could uses for medical devices, UV-Vis, photoluminescence(PL) and laser induced fluorescence spectroscopy(LIF) are employed to investigate different concentration of cholesterol(CH). The effect of CH concentration on the emission wavelength of dyes(RdB,Rd6G, Methylene Blue) was investigated by using LIF. It is shown that increasing in CH concentration leads to decrease in the photoluminescence spectrum and increase in the emission wavelength (Red Shif). In the study of the effect of CH concentration on the emission wavelength of Rhodamine6G, increasing in CH concentration in this dye caused red spectral shift and in the two other dyes the spectral shift have not been observed, it could find cholesterol has no direct reaction with these dyes.}, Keywords = {Cholesterol, Laser Induced Fluorescence(LIF), Potoluminescence(PL), Red Shift, UV-Vis}, volume = {26}, Number = {0}, pages = {137-140}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1946-en.html}, eprint = {http://opsi.ir/article-1-1946-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Akande, Alireza and Parvin, Parviz and Bavali, Ali and Zare, Zahra and Ebrahimnasab, Setareh and Faani, Mohammad mahdi}, title = {Effect of Transformer Oli Tempreture on Laser Induced Fluorescence Spectroscopy}, abstract ={In this paper, laser induction fluorescence spectroscopy is employed to investigate the thermal degradation and oxadation of two types of transformator oils. What is important in this study is the use if fluorescence spectroscopy in determining the quality and health of insulator oils. It is shown that increasing the heating duratuion leads to decrease in the fluorescence intensity and the corresponding red spectral shift.}, Keywords = {Laser induced fluorescence spectroscopy, Spectral Shift, Transformer Oil}, volume = {26}, Number = {0}, pages = {141-144}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1947-en.html}, eprint = {http://opsi.ir/article-1-1947-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Faani, Mohammad mahdi and Parvin, Parviz and Bavali, Ali and Ebrahimnasab, Setareh and Zare, Zahra and Akande, Alirez}, title = {Identification of mineral oil wells using laser spectrometry}, abstract ={The LIBS spectroscopy provides a quick, easy, and most importantly chemical analysis without the need for sample preparation. In this research, we have shown that using laser pulses and laser induced breakdown spectroscopy (LIBS), the physical properties of the oil reservoir rock, such as the rocks in the drilling path and their porosity, are evaluated. Using this method, a part of the chemical structure of the Asmari carbonate reservoir of Ahwaz was investigated and compared with the current methods for identifying mineral reservoirs.}, Keywords = {Ion radiation, Laser, Laser induced breakdown spectrometry, Oil well drilling and exploration}, volume = {26}, Number = {0}, pages = {145-148}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2222-en.html}, eprint = {http://opsi.ir/article-1-2222-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Azizkhani, Razie and Hebri, Davud and Rasouli, Saifollah}, title = {Diffraction of a Gaussian beam from 2D structures separable in the polar coordinates}, abstract ={Diffraction of a plane wave from 2D periodic structures in the polar coordinates including amplitude and phase radial gratings and 2D Bessel-based radial structures has been previously studied. For radial gratings, the diffraction pattern is a radial carpet beam that has an invariant shape under propagation. It was also shown that the 2D Bessel-based radial structures have self-images. In this paper, with theoretical work and simulation, the diffraction of a Gaussian beam from 2D separable structures in the polar coordinates are investigated. It is shown that by optimally selecting the radius of the Gaussian beam waist it is possible to form a petal-like diffraction intensity pattern that is applicable to multiple particle trapping.}, Keywords = {diffraction, radial gratings, Gaussian beam}, volume = {26}, Number = {0}, pages = {149-152}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1995-en.html}, eprint = {http://opsi.ir/article-1-1995-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Amoosoltani, Narjes and Farmani, Ali and Zarifkar, Abbas and Yasrebi, Navi}, title = {Performance improvement of a metal-insulator-metal plasmonic nanostructure biosensor using two consecutive disk resonators}, abstract ={In this paper, a metal-insulator-matel (MIM) plasmonic biosensor based on two consecutive disk resonators is presented and analyzed by the finite difference time domain (FDTD) method. The calculated sensitivity, figure of merit, quality factor, and temperature sensitivity of this biosensor are 986.3 nm/RIU, 129.77 RIU-1, 130.53, and 0.38 nm/◦C, respectively, which indicates an improved performance for identification of the type and concentration of different biomaterials, compared to the previously reported biosensors.}, Keywords = {biosensor, plasmonic, ring resonator, ethanol, sensitivity}, volume = {26}, Number = {0}, pages = {153-156}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1997-en.html}, eprint = {http://opsi.ir/article-1-1997-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Barzan, Mohammad and Hosseinitehrani, Nooshin and Koohianmohammadabadi, Ataallah}, title = {Investigation the effect of PVA on the linear and nonlinear optical properties of Acid Fusion dye solutions}, abstract ={In this paper, we investigate the effect of PVA on the linear and nonlinear optical properties of solution containing fusion acid dye. Samples were prepared in concentration of 0.1 mM. The luminescence spectra of the samples were measured by a diode laser at a wavelength of 532 nm as excitation source. The results show that presence of PVA, in addition to increasing the absorption coefficient and the luminescence intensity, leads to the redshift of the peak wavelength, the absorption and luminescence bandwidth were increased and the samples show nonlinear thermal behavior. The nonlinear refractive index and absorption coefficients of samples were obtained negative due to the self-defocusing and saturable absorption, respectively. Also, presence of PVA were enhanced the linear and nonlinear optical behaviors of the dye solution.}, Keywords = {Fuchsin acid, PVA, dye, luminescence, Z-scan technique.}, volume = {26}, Number = {0}, pages = {157-160}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1998-en.html}, eprint = {http://opsi.ir/article-1-1998-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Barzan, Mohammad and Hosseinitehrani, Nooshin and Koohianmohammadabadi, Ataallah}, title = {Investigation the effect of concentration on the linear and nonlinear optical properties of acid fusion dye solutions}, abstract ={In this paper, we investigate the effect of concentration on the linear and nonlinear optical properties of solutions containing fusion acid dyes. Samples were prepared in three concentrations (0.2-0.1-0.05 mM). The luminescence spectrum of the samples was measured by a diode laser at a wavelength of 532 nm as excitation source. The results show that the increase in concentration, lead to increase in absorption coefficient and intensity of luminescence, absorption peak wavelength is constant for all concentrations, but with increasing concentration for the luminescence peak wavelength the red shift occurs. Samples also show nonlinear thermal behavior at all concentrations. The nonlinear refractive index and absorption coefficients of samples have negative sign due to the saturable absorption and self-defocusing effects, respectively. }, Keywords = {Fuchsin acid, dye, luminescence, Z-scan technique.}, volume = {26}, Number = {0}, pages = {161-164}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1999-en.html}, eprint = {http://opsi.ir/article-1-1999-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Menshari, Parisa and Mohajerani, Ezeddin and Shirkavand, Afsh}, title = {Evaluation of surgical wound healing process using non-invasive diffusion reflectance spectroscopy}, abstract ={The role of light in optical systems for the diagnosis and treatment of diseases is considerable. Typical important applications of light include optical measurement techniques.  One of the optical measurement systems of the tissue is diffusion reflectance spectroscopy that has specially noticed as a noninvasive method in the field of medicine.  In this method, light enters and interacts with biological tissue in a non-destructive way and at the time of escape from the tissue, will contain valuable spectral information of each interaction lesion. In this study, we evaluated the surgical wound healing process using reflection-spectroscopy technique. In the other words, changes of optical absorption of oxy- and deoxy-heamoglobine chromophores in the scarring site were evaluated.}, Keywords = {Reflective Spectroscopy, Surgical Wound, Absorption Coefficient.}, volume = {26}, Number = {0}, pages = {165-168}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2000-en.html}, eprint = {http://opsi.ir/article-1-2000-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Zare, Farzaneh and Bahadoryfar, Behnam and Moravej, Zakeyeh and Tavassoly, Mohammad kazem}, title = {Coping with Decoherence in the Tavis-Cummings Model via Transition Frequency Modulation in the Presence of Dipole-Dipole Interaction and Multi-Photon Transitions}, abstract ={In this paper, we investigate the interaction between two two-level atoms with a reservoir (dissipation source) via two qubits transition frequency modulation in the presence of dipole-dipole interaction and multi-photon transitions by using the Tavis-Cummings model. After introducing the model and the proper Hamiltonian, and using the time-dependent Schrödinger equation, we obtain the probability amplitudes of the state vector, by which we analyze the coherence effects via considering different parameters. We show that, dipole-dipole interaction in the presence of frequency modulation in a certain range of dipole-dipole interaction strength, reduces the amount of coherence and then by increasing the dipole-dipole interaction, the coherence property increases. Also for single-and two-photon transitions, comparing with four-photon case, decoherence can be observabel in longer times.                                                                                                                                                                   }, Keywords = {Coherence Protection, Frequency Modulation, Multi-Photon Transition, Tavis-Cummings model}, volume = {26}, Number = {0}, pages = {169-172}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2001-en.html}, eprint = {http://opsi.ir/article-1-2001-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Rashedi, Ali and Razzaghi, Parvin and Nouroozi, Rahm}, title = {Intelligent Headlight of Vehicles}, abstract ={One of the important factors in driving safety at night is headlight. The most common system in the market is based on the manual switching between low and high light. In this paper, designed an array of LEDs with low power consumption, small size, longevity and rapid response time that can detect and recognize objects by using deep learning and computer vision in this system.}, Keywords = {Computer Vision, Deep Learning, Headlight, LED.}, volume = {26}, Number = {0}, pages = {173-176}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2003-en.html}, eprint = {http://opsi.ir/article-1-2003-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Dadashimotlagh, Raziyeh and Rezaeipandari, Mohammad and Arabanian, Atoosa sadat and Niknam, Alireza and Massudi, Rez}, title = {Investigation of the Temporal Profile Effect of Femtosecond Laser Pulse on Electron Acceleration in Argon Cluster}, abstract ={The interaction of femtosecond laser pulse with argon cluster is investigated based on nano-plasma model. The influence of the different pulse temporal profiles (Gaussian, secant hyperbolic and Lorentzian) on the acceleration parameters in cluster (cluster radius, electrons temperature and electrons density) is studied. Our results show that for the Lorentzian profile the final temperature of the electrons, and thus their acceleration will be higher.}, Keywords = {Cluster, Electron Acceleration, Femtosecond Pulse, Nano-plasma Model, Temporal Profile}, volume = {26}, Number = {0}, pages = {177-180}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2004-en.html}, eprint = {http://opsi.ir/article-1-2004-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Salehi, Navid and Arabanian, Atoosa sadat and Massudi, Rez}, title = {Experimental investigation of effective parameters in lensed-tapered optical fiber fabrication}, abstract ={In this paper, the study of effective parameters in fabrication of optical tapered-fiber lenses is performed. First, a method, called tube etching for the fabrication of tapered optical fiber is presented. Tapered-tip formation occurs inside a cylindrical cavity formed by the polymer coating of an optical fiber which is not stripped away prior to etching in hydrofluoric acid. The influence of temperature, etchant concentration, and fiber type on the tapered-tip angle is experimentally studied. Then, we have investigated a method to produce lensed-tapered optical fiber with a given lens radius to achieve the required divergence and spot size in a repeatable fashion.}, Keywords = {Optical fiber, Tapered-Lensed Fiber Tip, Tapered fiber Tip Quality, Fiber Output Characteristics}, volume = {26}, Number = {0}, pages = {181-184}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2006-en.html}, eprint = {http://opsi.ir/article-1-2006-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Salehi, Navid and Arabanian, Atoosa sadat and Massudi, Rez}, title = {Non-contact optical trapping of yeast cell using lensed-tapered fiber}, abstract ={In this paper, we have reported design and fabrication of a non-contact and non-destructive optical trapping system using a lensed-tapered optical fiber in order to trap and manipulate bio-particles. First, spatial distribution of lensed-tapered optical fiber output is simulated by finite difference time domain (FDTD) method and the optical forces resulted by this field distribution acting on yeast cell in two transversal and longitudinal directions are numerically calculated.  Then, lensed-tapered optical fiber ability to create a non-contact and non-destructive optical trap is experimentally investigated.}, Keywords = {lensed-tapered optical fiber, non-contact optical trapping, Fiber optical tweezers, yeast cell.}, volume = {26}, Number = {0}, pages = {185-188}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2007-en.html}, eprint = {http://opsi.ir/article-1-2007-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Sharifimehr, Mohammad reza and Ayoubi, Kazem and Mohajerani, Ezeddi}, title = {A new measurement method to evaluate the loading efficiency of organic dyes inside the core of polymeric nanocapsules based on comparative spectroscopy}, abstract ={Since the last two decades, polymeric nanocapsules have gained extensive interests and they have been widely used in various scientific fields. Although many studies have been performed on theoretical and experimental investigations of nanoencapsulation characterization so far, no study has been reported to measure the dye loading efficiency in a dye-doped liquid crystal (DDLC) mixture nanoencapsulated inside the core of polymeric nanocapsules because it’s impossible to evaluate the loading efficiency of dyes with low concentration using routine weight-based methods. In this work loading efficiencies of the liquid crystal and azo disperse dyes inside the core of fabricated polymeric nanocapsules were measured separately by using a comparative all spectroscopic analysis.}, Keywords = {Azo Dye, Liquid Crystal, Loading Efficiency, Polymeric Nanocapsule}, volume = {26}, Number = {0}, pages = {189-192}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2009-en.html}, eprint = {http://opsi.ir/article-1-2009-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Farahiyan, Maryam and Aalipour, Rasoul}, title = {Focusing properties of Gaussian Schell-model beam by Fresnel Zone Plate}, abstract ={Studying of the imaging with partially coherent light is important for characterizing the real and distant sources such as stares. In the optical imaging systems where the lens can’t be used, the diffractive lenses specially Fresnel zone plates are good alternatives. In this paper the focusing properties of the partially coherent light by Fresnel Zone Plate with measuring the beam intensity in focus and out of focus, and dependence of the intensity on the distance from the focal point are considered. Base on this we used a Gaussian­ Schell-model beam as the partially coherent light which has been provided by passing the laser beam through a rotating diffuser. The experimental results confirm the theoretical solutions.}, Keywords = {Diffraction, Fresnel zone plate, Gaussian-Schell Beam}, volume = {26}, Number = {0}, pages = {193-196}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2010-en.html}, eprint = {http://opsi.ir/article-1-2010-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Amirifaghani, Arman and Abedi, Kambiz and Jafari, Ki}, title = {Plasmonic Demultiplexer Based on Nanodisk and Nanoring Resonators}, abstract ={In this paper, a structure for multi-channel Wavelength demultiplexer (WDM) based on nanodisk and nanoring resonators Metal-Insulator-Metal (MIM) plasmonic waveguides is proposed. WDM structure consists of a bus waveguide and several nano-disks and nanorings. The proposed structure consists of several filters that can be extended to 1 × N channels. The simulation results show in the designed structure, Full-Width Half-Maximum (FWHM) of about 18 nm achieves and can be used in nanosensors, optical integrated circuits, nanoscale WDM systems, and the ultra-compact demultiplexer devices. In this paper, the used numerical method is two dimensional Finite-Difference Time-Domain (FDTD) method.}, Keywords = {Wavelength Demultiplexer, Metal-Insulator-Metal, Bus Waveguide, Nanodisk, Nanoring}, volume = {26}, Number = {0}, pages = {197-200}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2011-en.html}, eprint = {http://opsi.ir/article-1-2011-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Rajaei, Leila and Jafari, Maryam}, title = {Investigation of the effects of pondermotive force in the interaction intense laser with dissipative under dense plasma}, abstract ={The ponderomotive force is an important concept in plasma physics and, in particular, plays an important role in many aspects of the theory of laser-plasma interactions including current concerns like wakefield acceleration and Raman amplification. This nonlinear force is raised due to a high-intensity electromagnetic field interacting with plasma. This article results in the interaction of intense laser with dissipative underdense plasma. Our main aim is to present the variation of the profile of the electric field of laser and density of plasma due to the pondermotive force in the presence of a collision of particle}, Keywords = {dissipative under dense plasma, intense laser, pondermotive force.}, volume = {26}, Number = {0}, pages = {201-204}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2012-en.html}, eprint = {http://opsi.ir/article-1-2012-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Habibimoghaddam, Fatemeh and Mehrzad, Hossein and Shirkavand, Afshan and Mohajerani, Ezeddin and Mohammadimasoudi, Mohammad and Neyts, Kristi}, title = {The investigation of the effect of gold nano-island layer on the photoluminescence spectrum of Fabry-Perot cavity based on dye doped nematic liquid crystal}, abstract ={In this paper, a polarized and strongly modulated photoluminescence with narrow-band multi-modes is reported by adding a gold nano-island (NI) layer to a Fabry-Perot (FP) cavity based on dye doped nematic liquid crystal. The mirrors of this cavity are gold thin-film and gold NI layer. The gold NI layer strengthens the FP modes, in fact, plasmonic modes of the gold NI layer strongly amplifies the quality of the cavity. The role of the NI layer on optical quality of the cavity is investigated.}, Keywords = {Gold nano-island, Plasmonic, Liquid crystal, Fabry-Perot cavity, photoluminescence.}, volume = {26}, Number = {0}, pages = {205-208}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2225-en.html}, eprint = {http://opsi.ir/article-1-2225-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Rajabalinia, Amin and Mortezapour, Ali}, title = {The effect of frequency modulation on nonclassical behavior of an atom inside leaky cavities}, abstract ={In this paper, we consider a two-level atom (qubit) inside a leaky cavity, which its transition frequency is sinusoidally modulated via an external applied field. The qubit interacts with the cavity vacuum modes. It is shown that the frequency modulation remarkably change non-classical feature of the system. So that, one can control the non-classical behavior of the qubit by adjusting modulation parameters.}, Keywords = {Two-Level atom, Frequency modulation, Quantum Witness, Nonclassicality}, volume = {26}, Number = {0}, pages = {209-212}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2231-en.html}, eprint = {http://opsi.ir/article-1-2231-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Kuroshnia, Ghazaleh and Madani, Amir and Shirin, Simi}, title = {Study of the stimulation of Optical Tamm State in one-dimensional layered structure containing an anisotropic graphene-based hyperbolic metamaterial}, abstract ={in this paper the possibility of the excitation of Optical Tamm States have been investigated in a one-dimension photonic crystal containing graphene-based hyperbolic metamaterial. The anisotropic graphene-based hyperbolic metamaterial can be supposed as a homogeneous medium using effective theory in THz region. The transfer matrix method has been used in the research and the results show that the transmission of the structure in the frequency region of optical Tamm States decreases by the increase of the chemical potential of graphene layer and increases by the increases of the thickness of the hyperbolic metamaterial.}, Keywords = {One dimensional photonic crystal, Optical Tamm State, Graphene, effective permittivity.}, volume = {26}, Number = {0}, pages = {213-216}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2015-en.html}, eprint = {http://opsi.ir/article-1-2015-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {TaherianGhahfarokhi, Seyed Kamran and RashidiHuyeh, Maji}, title = {Optical properties of a thin film of titanium dioxide nanotube containing silver}, abstract ={In this communication, were presented the optical properties of a thin film of titanium dioxide nanotubes including silver. For this, first, a model was developed to evaluate the reflectance and the absorption spectra. The model is based on the interference of multi-beam, reflected from the titanium dioxide nanotubes thin layer. The results showed that by increasing the nanotube wall thickness, the surface plasmon resonance wavelength presents a redshift and its amplitude increases. In addition, the nanotube morphology and shape effects were investigated, using COMSOL Multiphysics. The results confirmed the presence of two surface plasmon resonance modes of longitudinal and transversal.  }, Keywords = {“Effective Medium Theory”, “Silver Nano-Structures”, “Surface Plasmon Resonance”, “Titanium Dioxide Nanotube”.}, volume = {26}, Number = {0}, pages = {217-220}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2016-en.html}, eprint = {http://opsi.ir/article-1-2016-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Arabagri, Saeid and AsleDehghan, Mahtab and Moslehian, Mojtaba and Kazemi, Seyed shahram}, title = {Estimation of focused beam spot size for a multimode laser by considering spherical aberration of lens}, abstract ={In this article the focused beam spot diameter of laser beam is calculated by two methods. The first method witch is the first order approximation is based on investigating the fundamental mode characteristics and its propagation through a thin lens. The second method which is more accurate is based on propagation of the highest TEMl0 Laguerre-Gauss mode and considering the spherical aberration of coupling thin lens. It was realized that in thin lenses with spherical aberration coefficient more than 10, the effect of spherical aberration on focused beam diameter is significant and due to the importance of choosing the correct fiber coupler diameter, considering this parameter for correct calculation is necessary.}, Keywords = {Collins integral, Fiber coupling, Gaussian beam, Laguerre-Gauss beam, Spherical aberration}, volume = {26}, Number = {0}, pages = {221-224}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2017-en.html}, eprint = {http://opsi.ir/article-1-2017-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Arabagri, Saeid and AsleDehghan, Mahtab and Moslehian, Mojtaba and Kazemi, Seyed Shahram}, title = {A Method for designing high power thin-disk laser resonator for appropriate beam coupling into fiber}, abstract ={In high power thin-disk lasers, the changes in pump power cause variation of radius of curvature of thin-disk and therefore output beam characteristics such as beam diameter and beam quality. These variations are very destructive when coupling the laser beam into a fiber and also make the coupling process and exact calculations very difficult and sophisticated. In this article a method for designing the resonator is presented which reduces the variation of output beam specification and simplifies the coupling process. Also the main problem of coupling calculation is to evaluate the least achievable focused beam diameter which is vital to choose the optimum core diameter for fiber. This parameter is extracted for introduced resonator and presented.}, Keywords = {Beam spot size, Fiber coupling, Resonator, Thin-disk}, volume = {26}, Number = {0}, pages = {225-228}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2018-en.html}, eprint = {http://opsi.ir/article-1-2018-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Sadeghi, Hasan and Soofi, Hadi}, title = {Design and modeling of tunable Absorber based on Graphene-Liquid Crystal hybrid structures}, abstract ={In this article a tunable optical absorber based on hybrid graphene- liquid crystal structure is presented. In this structure, a silicon grating is employed to adjust the absorption wavelength to the communication range. Afterwards, applying voltage to the liquid crystal can fine tune the absorption to the desired wavelength. The presented absorber can effectively tune the absorption wavelength in a range of 1523 nm to 1574 nm which covers the entire C band plus a portion of the L band. It is worth noting that the presented absorber is ultra-narrow band having a FWHM of only 2.2 nm which makes it perfect for communication systems based on wavelength division multiplexing. The presented device can be utilized to design various devices such as photodetectors or modulators for optical communications.}, Keywords = {Tunable optical absorber, Liquid crystal, Graphene.}, volume = {26}, Number = {0}, pages = {229-232}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2019-en.html}, eprint = {http://opsi.ir/article-1-2019-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Razzaghi, Davood and Baradaran, Mi}, title = {Designing of Zeeman slower for laser cooling of 87 Sr atoms}, abstract ={In this paper a Zeeman slower for slowing of  atoms has been designed. Thermal atoms come from oven at 350-400 C ْ having a most probable velocity about 430  , enter the Zeeman slower and must been slowed down to about 50   . This slower has been designed by matlab software. Then simulation of the atomic Zeeman slowing dynamics were performed. The results of simulation showed that Zeeman slower is properly well designed and atoms with velocities up to 394  were slowed in this Zeeman slower.}, Keywords = {Sr atoms, laser cooling, Zeeman slower.}, volume = {26}, Number = {0}, pages = {233-236}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2226-en.html}, eprint = {http://opsi.ir/article-1-2226-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Fallah, Nasrin and Aref, Seyed Hashem}, title = {Increasing the phase sensitivity of the surface plasmon resonance in common-path interferometry}, abstract ={Surface plasmon resonance (SPR) is the excitation of cumulative charge oscillations in the metal-dielectric interface. Because the surface plasmon is highly sensitive to environmental refractive index changes, SPR sensors are designed and manufactured for research, laboratory and industrial applications. These sensors can generally track changes in the plasmon by measuring parameters such as intensity, phase, angle and wavelength of light. Among these methods the phase measurement method is the most sensitive. This paper proposes the idea of increasing the sensitivity of the SPR phase sensor based on the polarization control of the light and confirms its theoretical and experimental performance.}, Keywords = {Surface Plasmon Resonance, Phase Measurement, Common-Path Heterodyne Interferometry (CPHI)}, volume = {26}, Number = {0}, pages = {237-240}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2022-en.html}, eprint = {http://opsi.ir/article-1-2022-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Saeidi, Sepideh and Masoumi, Amir}, title = {Study of optical depth and Angstrom exponent of dust aerosols over Kuwait area based on the sunphotometer data}, abstract ={In this paper, the optical and physical properties of the aerosols, including their optical depth and Angstrom exponent, were analyzed for the Kuwaiti station from 2006-2018. The optical depth (Angstrom exponent) of the aerosols increases (decreases) in spring and summer seasons. Dust particles are dominant aerosol type in the atmosphere of Kuwait and mainly are added to the atmosphere in spring and summer. Two main sources of dust in the Middle East, Tigris- Euphrates basin and the Arabian Peninsula, are responsible for dust particles of Kuwait. Dust sources of the Arabian Peninsula (Tigris- Euphrates basin) are often active in the spring (summer) times.}, Keywords = {Aerosol optical depth, Angstrom exponent, sunphotometer, dust, Middle East.}, volume = {26}, Number = {0}, pages = {241-244}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2023-en.html}, eprint = {http://opsi.ir/article-1-2023-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Pakarzadeh, Hassan and Hasanpoore, Fereshteh}, title = {Temperature- Controlled Parametric Gain in Photonic Crystal Fibers}, abstract ={nowadays, photonic crystal fibers (PCFs) are good candidates for observation of nonlinear effects owing to their characteristics of high nonlinearity and controlled dispersion. One of the important applications of PCFs is to use as nonlinear medium for parametric amplification. In this paper, we investigate for the first time the effect of temperature on the parametric gain control in PCFs. Parametric gain spectrum and saturation curve are simulated using the four-wave mixing approach and solving coupled-amplitude equations.  The results show that as the temperature increases, the gain peak is shifted and the saturation power is reduced.}, Keywords = {parametric amplification, zero dispersion wavelength, gain spectrum, photonic crystal fiber, temperature}, volume = {26}, Number = {0}, pages = {245-248}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2026-en.html}, eprint = {http://opsi.ir/article-1-2026-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Negintaji, Yahya and Rezvanijalal, Masou}, title = {Wave-guiding Process with Periodic Refractive Index Induced in a Flaming Gas}, abstract ={In this paper, light propagation (He-Ne laser and a simple lamp) within periodic flames of Butane-Propane gas or natural gas (methane) is investigated experimentally. Periodic temperature distribution induced by combustion leads to a periodical refractive index in the burning gas. This periodic optical medium behaves like an electromagnetic waveguide and conducts the light to the upstream screen through layers that have total internal reflection condition. Experimental observation shows that refractive index in the center of Butane-Propane gas is slightly higher than that of air, but in the methane, refractive index of the flame core is lower than air. By this experiment, the refractive index of burning gasses can be found easily with high precision.}, Keywords = {Flaming Butane-Propane gas, Methane, Thermal gradient, Wave-guiding.}, volume = {26}, Number = {0}, pages = {249-252}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2027-en.html}, eprint = {http://opsi.ir/article-1-2027-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Kazemi, Amin and Fadavieslam, Mohammad rez}, title = {Study the effect of K, B, N and Cl doping on emitted spectra of Graphene quantum dots on graphene substrate}, abstract ={In this paper the effect of doping of metallic (K, B) and non-metalic (N, Cl) elements on emitted spectra of Graphene quantum dots (GQDs) on graphene substrate has been studied. AFM, SEM, PEEM and optical microscopy has been performed to study structural properties and PL test for optical properties of GQDs. Results show that by increasing doping percentage, the intensity of emitted spectra has an increasing trend for K and B, and decreasing trend for N and Cl. }, Keywords = {Graphene, Graphene quantum dots, emitted spectra.}, volume = {26}, Number = {0}, pages = {253-256}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2028-en.html}, eprint = {http://opsi.ir/article-1-2028-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Rahmani, Roghayeh and Morttezapour, Ali}, title = {Phase estimation of a moving qubit inside leaky cavities}, abstract ={In this paper, we consider a moving qubit inside a double leaky cavity, which interacts with the cavity modes during its motion. It is shown that increasing qubit velocity could lead to the protection of initial Quantum Fisher Information (QFI) and raising precision of the phase estimation of the qubit state.}, Keywords = {Qubit, Fisher information, Phase estimation}, volume = {26}, Number = {0}, pages = {257-260}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2029-en.html}, eprint = {http://opsi.ir/article-1-2029-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Lanjani, Alireza and Shahbazi, Amir hossein and Madanipour, Khosro}, title = {Experimental Investigation of Temperature Effects on CW Laser Diode Parameters}, abstract ={In this paper, we investigate the effects of temperature on experimental parameters of laser diodes such as threshold voltage , current  and optical power. In our setup, we drive a 658nm laser diode with a typical power of 150mW by a stable current source and temperature stabilizer. We plot the P-I and V-I curves and calculate the threshold current by fitting a linear trendline. Based on the results, optical power decreases, and threshold current increases with the increase of temperature.}, Keywords = {Diode Laser, Threshold Current, Temperature Stabilization, Threshold Voltage, Power Meter.}, volume = {26}, Number = {0}, pages = {261-264}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2030-en.html}, eprint = {http://opsi.ir/article-1-2030-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Lanjani, Alireza and Shahbazi, Amir hossein and Madanipour, Khosro}, title = {Investigation of Laser Diodes Efficiency Under Frequency Modulation}, abstract ={Laser diodes have different operating modes, such as continuous (CW), pulsed, and modulated modes. In this article, by modulating a pulse wave with a specific frequency (f) and duty cycle, we change the output current and frequency of laser diode. So the laser diode output changes to modulated mode. Because of the structure of semiconductor lasers and the short duration of injecting current to the active region of laser, the electrical characteristics of the laser will be changed so that laser diode can be overdriven. In this experiment, we will show the effects of frequency on laser diode efficiency.}, Keywords = {Diode Laser, Frequency Modulation, Modulated Laser, Optical Efficiency.}, volume = {26}, Number = {0}, pages = {265-268}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2031-en.html}, eprint = {http://opsi.ir/article-1-2031-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Moosavian, Seyed Saeid and Ghoreyshi, Seyed Mohammad bagher and Mohammadbeigi, Arezoo}, title = {Design and Fabrication of Nanostructured Transparent electrode for Perovskite Solar Cell}, abstract ={In this study, first, MoO3/Ag/MoO3 transparent electrode with optimum thicknesses of 20/13/20 nm was designed and fabricated. The optical and electrical properties of it such as optical transmission and sheet resistance were investigated that at 550 nm wavelength, 62.8% and 4.56 Ω /cm2 were obtained, respectively. Then, after fabrication of the perovskite solar cell with Glass / FTO / TiO2 / Perovskite / CuPc structure, the designed transparent electrode by vacuum evaporation deposition method was used as cathode in solar cell. Finally, the current- voltage characterization of the fabricated perovskite solar cell with transparent cathode showed 4% efficiency. Therefore, the transparent cathode applied in this structure can be used instead of the expensive gold cathode in the Perovskite solar cells.}, Keywords = {Efficiency, MoO3/Ag/MoO3, Perovskite Solar Cell, Transparent electrode, Vacuum Evaporation.}, volume = {26}, Number = {0}, pages = {269-272}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2032-en.html}, eprint = {http://opsi.ir/article-1-2032-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Torabi, Arezou and Mashhadi, Fatemeh and Mollabashi, Mahmoud and Montazeralghaem, Mohsen and Pazokian, Hedieh}, title = {Investigation of the Polyethersulfone(PES) Surface Morphology Following KrF Laser Irradiation Below the Ablation Threshold}, abstract ={Different submicron structures are appeared on the surface of the material following laser irradiation below the ablation threshold. These structures affect material properties for desired applications. On the other hands, the size and the shape of these structures depend on material properties and irradiation parameters. Here, the changes in the surface morphology of a polyethersulphone membrane following KrF laser irradiation below the ablation threshold and with different number of pulses and repetition rates are investigated. The effect of these structures on polymer hydrophilicity, which is an important parameter for medical applications, was also investigated.}, Keywords = {KrF Laser, Laser interaction, Polyethersulfone membrane}, volume = {26}, Number = {0}, pages = {273-276}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2035-en.html}, eprint = {http://opsi.ir/article-1-2035-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Ershadi, Fatemeh and Mirershadi, Soghra and Sattari, Farhad and Mirzaee, Sharareh}, title = {Effect of Organic Cation Composition on Optical Bandgap of the Organic-Inorganic hybrids}, abstract ={According to the recent remarkable progress in the organic-inorganic hybrids in the next generation solar cells, light-emitting diodes and optoelectronics devises, investigation of the optical and electronical properties of these structures seems to be necessary. Thus, in this paper, 3D CH3NH3FeCl3 Organic–inorganic perovskite and 2D hybrids, (CH3(CH2)3NH3)2FeCl4 and) C6H5(CH2)2NH3)2FeCl4 have been prepared. The effect of organic cation on the electronical and optical properties of the structures have been studied experimentally. Our study concludes that the band gap energy can be tuned by varying the organic cation. Thus, the synthesized structures can be promising candidates for the fabrication of electronic and optical devises.}, Keywords = {Perovskite, Organic cation, Optical Bandgap, Organic-inorganic hybrids.}, volume = {26}, Number = {0}, pages = {277-280}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2036-en.html}, eprint = {http://opsi.ir/article-1-2036-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Bagher, Farzaneh and Rezvanijalal, Masou}, title = {Dispersion Relation of a Photonic Crystal in a Cylindrical Waveguide}, abstract ={In this paper, interaction of light with a piece of photonic crystal placed in a cylindrical waveguide with conductive walls is studied both analytically and computationally. First, the propagating modes in the waveguide (with square cross-section) and its dispersion relation is mentioned. Then, reflection and transmission coefficients from periodic index layers (i.e. a photonic crystal) within the waveguide are analytically found by the matrix optics. After finding the transmission coefficient and comparing it with that in free space, the effect of waveguide on the dispersion relation of photonic crystal is revealed. These two dispersion relations are the same for frequencies much larger than the cut-off frequency but they have distinct differences for frequencies near to it.}, Keywords = {Photonic crystal, Dispersion relation, Waveguide.}, volume = {26}, Number = {0}, pages = {281-284}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2037-en.html}, eprint = {http://opsi.ir/article-1-2037-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Ansari, Narges and Mirbaghestan, Kimi}, title = {DesigningPerfect Absorber withWavelength-AdjustableBy Using Monolayer MoS2 in Defective Photonic Crystals}, abstract ={Today, two-dimentional materials such as MoS2 have exhibited distinctive capabilities in optoelectronic applications. In this paper,to achieve high absorption and wavelength-adjustable, defective photonic crystals is used which is formed of {(AB)p MDM (AB)q}that p and q show the number of alternation for top and bottom defect layer which is selected as MoS2/D/MoS2. The transfer matrix method is used to determine absorption. Also, optimal structure is found by changing the number of p, q and thickness of D. Near perfect absorption, which is more than 97 percent, with wavelength-adjustable capability could be obtained by proposed structure. By enhancing the thickness of D, red shift is resulted in wavelength of defect mode.}, Keywords = {Absorption, Defective photonic crystal, Mobilidiumdisulfate, Transfer matrix method, Wavelength-adjustable capability}, volume = {26}, Number = {0}, pages = {285-288}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2038-en.html}, eprint = {http://opsi.ir/article-1-2038-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Ansari, Narges and Mirbaghestan, Kimi}, title = {Effect of Symmetric and Antisymmetric Defective Photonic Crystal with MoS2 Monolayer on Defect Mode}, abstract ={Nowadays, two-dimensional materials MoS2 have received a lot of attention due to its high absorption despite their nanometer thickness. One of the most common methods to increase absorption is to insert monolayer MoS2 as a defect in photonic crystals. In this paper the absorption spectrum of the structures antisymmetric and symmetric defective photonic crystals with two different defects (DMD and MDM) are compared. The influences of altering the thickness of defect layer D on wavelength of defect mode are investigated. Transfer matrix method is used to calculate absorption. More than 93 percent absorption in design wavelength and near 90 percent in wavelength of edge band gap could be obtained by proposed structures.}, Keywords = {Absorption, Defective photonic crystal, Mobilidium disulfate, Two-dimensional materials, Transfer matrix method.}, volume = {26}, Number = {0}, pages = {289-292}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2039-en.html}, eprint = {http://opsi.ir/article-1-2039-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Gholamimehrabadi, Yashar and Khorsandifard, Mahdiyeh and Jafari, Kian and Abedi, Kambiz}, title = {Design of logic circuits by using MEMS technology and optical waveguides}, abstract ={In this paper, a new method is proposed to implement logical combinations and perform Boolean algebraic operations as SOP combinations, to design logic circuits for application in harsh environments. This method uses MEMS switches. These switches use electrostatic excitation for switching. According to the simulation results, the operating voltage and switching time of the proposed switches are 12V and 2.6 μs, respectively. In this method, optical waveguides are also used to transmit light from the source to the output terminal. In the following, displacement of the switches and the transmittance of the light by waveguides are simulated.}, Keywords = {logic circuits, micro electromechanical systems, optical waveguide, switch.}, volume = {26}, Number = {0}, pages = {293-296}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2040-en.html}, eprint = {http://opsi.ir/article-1-2040-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Zare, Hossein and Zareian-jahromi, Ehsan and Basiri, Raheleh}, title = {Gain improvement of a leaky wave optical antenna with H-shaped slots}, abstract ={In this paper, an optical leaky wave antenna in terahertz frequency range is proposed for operation in telecommunication systems demanding a frequency bandwidth of more than 32 THz. In the proposed antenna, wave leakage is obtained through embedded H-shaped slots. Radiation properties of designed antenna are optimized utilizing an optimization of geometrical parameters of these slots. A highly directive radiation pattern with 17.3 dBi directivity is achieved whereas the corresponding gain is about 15 dB.}, Keywords = {leaky wave antenna, gain, terahertz, H-shaped slot.}, volume = {26}, Number = {0}, pages = {297-300}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2041-en.html}, eprint = {http://opsi.ir/article-1-2041-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Mosallanejad, Maral and Haidari, Gholam hosain and Ghasemi, Mohse}, title = {Optical Simulation of Graphene in Organic Solar Cells Using the 3D-FDTD Method}, abstract ={Graphene can be used in a variety of technologies based on unique optical, thermal, mechanical and electronic properties. In addition, its fabrication process and raw materials are cheap. This study investigates the optical application of graphene in organic solar cells using the FDTD method. Graphene is a two-dimensional sheet of carbon atoms in a burrow configuration, so modeling of its dielectric function is not performed using conventional volumetric methods. The surface conductivity method based on the Kubo model with the possibility of defining different layers of graphene was used in this study. The simulation results show that in the monolayer graphene state instead of ITO and ITO/ PEDOT: PSS, the short-circuit currents were increased by 17.6 and 11%, respectively, compared to the standard cell. Also, as the number of graphene layers increased, the short circuit current in both cases decreased.}, Keywords = {Graphene, Surface Conductivity Model, Organic Solar Cell, 3D-FDTD}, volume = {26}, Number = {0}, pages = {301-304}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2042-en.html}, eprint = {http://opsi.ir/article-1-2042-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Safdarimolan, Elnaz and Mohajerani, Ezeddin and Ansari, Mohammad ali and Shirkavand, Afsh}, title = {Investigation of the possibility of estimating spatial information of skin lesion using diffuse reflectance light from tissue by simple method}, abstract ={In this paper, a 2-layer phantom with similar optical properties to the skin texture was developed to investigate the location information of skin lesions. Then the phantom homogeneity experiment was performed by measuring the diffuse reflectance light at different positions on the sample by an optical segment. In order to simulate the skin lesion, cylindrical phantoms at different heights were inserted into the phantom. Finally, diffuse reflectance light was obtained for different samples by optical segment. The results show behavioral differences between sorbents with different depths and this information is very useful for estimating spatial information of the lesion.}, Keywords = {Diffuse reflection - skin lesion - distance of light source and detector - phantom similar to skin textur}, volume = {26}, Number = {0}, pages = {305-308}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2044-en.html}, eprint = {http://opsi.ir/article-1-2044-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Mazandarani, Hamid reza and Efafi, Babak and Ghafary, Bijan and Norouzianalam, Shahab}, title = {Synthesis of the Zinc Oxide nanostructures for the manufacture of ultraviolet optical sensors}, abstract ={In this paper, the synthesis and fabrication of thin-film and Zinc Oxide nanorods arrays and their optical and electrical properties were studied for the manufacture of optical sensors. For this purpose, at the first, the thin films and Zinc Oxide nanorods arrays were synthesized by sol-gel and hydrothermal methods, respectively. To investigate the structural properties of the nanostructures, XRD and SEM analyses and to study the optical and electrical properties of the nanostructure UV-Vis and I-V analyses were done, respectively. According to the results, Zinc Oxide nanorods have high response and sensitivity to Zinc Oxide thin films.}, Keywords = {Hydrothermal, Nanorods, Optical sensor, Thin film, Zinc Oxide}, volume = {26}, Number = {0}, pages = {309-312}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2045-en.html}, eprint = {http://opsi.ir/article-1-2045-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Bahrami, Mohsen and Moradpour, Zahr}, title = {Numerical simulation of energy transport in a tissue for flat-top and Gaussian light beams by using Monte Carlo method}, abstract ={Energy transport in a liver tissue has been investigated numerically by making use of Monte Carlo method for flat-top and Gaussian beams. The radius of flat-top and effective radius of Gaussian beams were considered similar and equal to 0/05  , 0/1 and 0/15 cm. To study the effects of different beams on the tissue the values of Fluence have been compared in the distance of 0/2 cm  from the upper surface of the tissue. The results have shown that both kinds of beams have the same Fluence in small radiuses but they are different in the larger radiuses and it is in favor of Gaussian beams.  }, Keywords = {Energy transport, Monte Carlo, tissue.}, volume = {26}, Number = {0}, pages = {313-316}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2046-en.html}, eprint = {http://opsi.ir/article-1-2046-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Mohagheghian, Maryam and Ghavamisabouri, Saee}, title = {Design and fabrication of the multilevel Fresnel lenses based on amplitude ‌spatial light modulator}, abstract ={The Fresnel Zone Plate (FZP) as a diffraction optical element (DOE) is widely used in a variety of applications. The biggest problem of them is low efficiency that can be solved by fabrication a multi-level FZP. In this paper, a MLFZP is designed in the MATLAB environment and displayed on an amplitude spatial light modulator (SLM). Then, the intensity distribution of the focused beam is recorded and the effect of the DOE parameters are investigated.}, Keywords = {amplitude spatial light modulator, Diffractive optical elements, Fresnel lenses, Laser.}, volume = {26}, Number = {0}, pages = {317-320}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2047-en.html}, eprint = {http://opsi.ir/article-1-2047-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Aghaie, Mohammad and Kazemi, Shahram and Radmard, Saeid and Bakhtiari, Mahdi}, title = {Improvement of beam quality and laser efficiency of Yb:YAG thin disk laser by use of zero-phonon-line pumping}, abstract ={In this report, we studied on the effect of change of the pump wavelength from 940 nm pumping to zero-phonon-line (969 nm) pumping base on numerical and experimental results. We calculated and measured output power laser, disk temperature and the value of the unabsorbed pump power. Also, we measured dioptric power variation of disk to estimate improvement of the laser beam quality in resonator design. The comparison of the results show increasing in laser efficiency about 14.5%, decreasing of the disk temperature about 28.6% and decreasing of the unabsorbed pump power about 14.8% (by use of 8pass module). Due to decreasing in dioptric power variation of thin disk it shows improvement of laser beam quality about 28% in resonator design.}, Keywords = {Thin disk laser, Yb:YAG, beam quality, zero-phonon-line pumping, resonator design}, volume = {26}, Number = {0}, pages = {321-324}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2049-en.html}, eprint = {http://opsi.ir/article-1-2049-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Adibnia, Sima and Shahshahani, Fatemeh and Karimi, Maryam}, title = {Theoretical Modeling of Optical Fiber Refractive Index Sensor with Grating Structure Based on the Lossy Mode Resonance}, abstract ={In this paper, a fibre-refractive index sensor with a Bragg grating based on the lossy mode resonance is theoretically investigated. In this sensor, a small portion of the fibre cladding is removed and covered with a thin layer such as ITO that is the transparent conductive oxide. This sensor has been studied in two grating structures with phase shift and without phase shift and the performance of these two structures are compared. The simulation results show that the sensor structure with π / 2 phase shift in the middle of the grating has a higher accuracy coefficient than the structure without phase. The accuracy of the sensor depends on the coupling coefficient and  the increasing coupling coefficient causes the increasing accuracy of sensor in the structure with phase shift.}, Keywords = {Phase shift, Lossy mode resonance, Bragg grating, Sensitivity, Optical fiber sensor.}, volume = {26}, Number = {0}, pages = {325-328}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2050-en.html}, eprint = {http://opsi.ir/article-1-2050-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Kazempour, Mir Vahid and Vahed, Hami}, title = {Design and Analysis of Photonic Crystal Fiber Based Optical Sensor to Control the Temperature of the Transformer Oil}, abstract ={Transformer oil is one of the most important parts of transformers in the power industry, which is responsible for insulating the transformer Coils and cooling the transformer temperature through heat conduction. Of course, for this oil to function properly, its quality needs to be regularly monitored by measuring its physical properties such as refractive index. One of the control methods in this field is the use of optical sensors. In this paper, an optical sensor based on a photonic crystal fiber is designed that can determine the oil temperature in the range of 25 to 50 °C based on changes in the oil refractive index. Our results also show that in the structure consisting of gold, titanium and graphene monolayer the most relative sensitivity of the proposed sensor is 6095 nm/RIU.}, Keywords = {Sensor, Losses, Sensitivity, Oil, Photonic Crystal Fiber.}, volume = {26}, Number = {0}, pages = {329-332}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2052-en.html}, eprint = {http://opsi.ir/article-1-2052-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Chharganehkalangestani, Farhad and EsmailiGhodsi, Farhad and Bazhan, Zahr}, title = {The effect of zinc doping on the structural and optical properties of antimony sulfide nanostructures}, abstract ={In this research, the effect of zinc doping on the structural and optical properties of antimony sulfide thin films which prepared by dip coating sol-gel method on glass substrates was investigated. The crystal structure and morphology of the films were characterized by X-ray diffraction (XRD) analysis and field emission scanning electron microscopy (FESEM), respectively. Optical constants and thickness of the films were obtained by using transmission spectra in UV-Vis region and via pointwise unconstrained minimization approach. Optical measurements show that Sb2S3 thin films have high absorption coefficient. The band gap energy changes between 2.4 and 3.6 eV and by doping zinc, the band gap energy of the films decreases firstly and then increases. FESEM images of the films show that the grain size decreases with increasing doping rate and the surface morphology becomes uniform. Also, the obtained peaks in the XRD patterns show that the Sb2S3 films have an orthorhombic structure.}, Keywords = {Optical Properties, Sol-Gel, Antimony Sulfide}, volume = {26}, Number = {0}, pages = {333-336}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2053-en.html}, eprint = {http://opsi.ir/article-1-2053-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {ShahbahramiMoghadam, Niloufar and Hadidi, Naghmeh and Pazuki, Gholamreza and SharifNia, Zarin and Eteghadi, Atefeh and Shahi, Fatemeh and Parvin, Parviz}, title = {Investigation of hyperthermia effect induced via the presence of carbon nanotubes and laser light on SKOV3 ovarian cancer cells line: Evaluation of cell viability}, abstract ={PEGylated carbon nanotubes have been recently considered as a new generation of nanoparticles that are sensitive to laser light. Carbon nanotubes (CNT) can cause hyperthermia by converting light to heat. In this study, the effect of hyperthermia via PEGylated CNTs in the presence of 808 nm laser diode on SKOV3 ovarian cancer cell line in vitro condition was investigated. The apoptosis assay was used by the Flow Cytometry The apoptosis test results showed that laser couple with PEGylated carbon nanotubes damage cancer cell.}, Keywords = {Cancer, Ovarian Cancer, Hyperthermia, PEGylated Carbon Nanotubes}, volume = {26}, Number = {0}, pages = {337-340}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2235-en.html}, eprint = {http://opsi.ir/article-1-2235-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Iranpour, Sara and Saheb, Vahid and Rooholamininejad, Hossei}, title = {Synthesis of CsPbI3 Perovskite Quantum Dots and Their Application in Solar Cell}, abstract ={Colloidal nanocrystals of inorganic cesium lead halide perovskites (CsPbI3) have attracted much attention for photonic and optoelectronic applications. CsPbI3 quantum dots have cubic phase stabilization at low temperatures. Their absorption spectrum is within the visible range, which is very suitable for use in solar cells. Here, CsPbI3 colloidal nanocubes with special size distribution were synthesized using inexpensive commercial precursors. In this paper, paraffin solvent were used instead of octadecence, which is inexpensive. Although organic−inorganic hybrid perovskites like MAPbI3 are leading in terms of efficiency, they have been facing a huge challenge of long-term stability. In this paper, CsPbI3 perovskite quantum dots were used as a light-absorbing layer in solar cells and obtained a voltage over 630 mV.}, Keywords = {cubic phase, organic, Perovskite, quantum dot, solar cell}, volume = {26}, Number = {0}, pages = {341-344}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2054-en.html}, eprint = {http://opsi.ir/article-1-2054-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Kavoshtehrani, Masoud and Narimani, Seyed mohammad hass}, title = {Design of silica anti-reflection nano layer in the wavelength range 800 to 1500 nm}, abstract ={In this paper, the design of an anti-reflection nano layer in the wavelength range of 800 to 1500 nm is investigated using Lumerical software. The layer and substrate are selected from silica. The surface geometry of the layer is selected by the Moth-Eye. By changing the rotation period, height, and surface geometry, we will reach an anti-reflective layer. It is shown that the transmittance in this wavelength region is between 98.8% to 99.3% with the highest transmittance in the wavelength region (1020-1080) nm and the lowest transmittance in the wavelength region (1300-1500 nm).}, Keywords = {Anti-reflective layer, Lumerical software, Moth-Eye structure, Nano layer}, volume = {26}, Number = {0}, pages = {345-348}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2227-en.html}, eprint = {http://opsi.ir/article-1-2227-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Zakeri, Zaynab and Lavaei, Layla and Solaimani, Mahdi and Trohid, Seyed ali asghar}, title = {Investigation of wave packet propagation in the fractional, conventional and nonlinear quantum mechanics formalism}, abstract ={In this paper we study the transfer of a Gaussian wave packet through a rectangular quantum barrier in the fractional quantum mechanics formalism. We investigate the reflection, trapping and transmission coefficients of a moving Gaussian wave packet as a function of parameter  when the product of barrier height V0 and barrier width is constant. In order to solve the Schrödinger equation we use the finite difference method and try to compare the wave packet propagation in three fractional, linear and nonlinear systems. In this paper we find that the transport phenomenon is very different in the fractional medium compared with the linear system. For example, in our study the trapping occurs only in the fractional medium.}, Keywords = {fractional Schrödinger equation, reflection coefficient, transmission coefficient, trapping coefficient, wave packet propagation.}, volume = {26}, Number = {0}, pages = {349-352}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2055-en.html}, eprint = {http://opsi.ir/article-1-2055-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Radmard, Saeid and Kazemi, Shahram and Aghaei, Mohamm}, title = {Enhancement of Output Power Boundaries and Improvement of Single-Disk Laser Operation by Changing Pumping Wavelength}, abstract ={Increasing maximum extractable power and improvement of beam quality of the laser considering power scaling restrictions in single-disk configuration is presented. Experimental results of two different laser set-ups in kW regime with 969 and 940 nm pump sources reported. Enhancement about 40% in maximum output power and improvement about 30% in beam quality factor, predictable utilizing 969 nm pumping sources.}, Keywords = {Thermal Effects, Pumping, Thin Disk Laser}, volume = {26}, Number = {0}, pages = {353-356}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2056-en.html}, eprint = {http://opsi.ir/article-1-2056-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {EsmaeiliGermezgholi, Sepideh and Rezaei, Behrooz and Ahmadi, Sohrab}, title = {Optical absorption enhancement in thin film silicon solar cells: The effect of antireflection coatings and back reflectors}, abstract ={In this paper, a thin film silicon solar cell with anti-reflection coating on front surface and combination of periodic grating and photonic crystal on its back surface has been considered. The thickness and number of anti-reflection coating, as well as the geometric and physical parameters of photonic crystal and grating are optimized to increase the optical absorption of solar cell. The simulations have been performed using the finite difference time domain method with Lumercial software. The results show that optical absorption of solar cell has been increased significantly using the anti-reflection coating, photonic crystal and grating.}, Keywords = {Photonic crystal, antireflection coating, grating, absorption, silicon solar cell.}, volume = {26}, Number = {0}, pages = {357-360}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2057-en.html}, eprint = {http://opsi.ir/article-1-2057-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {AghazadeTehrani, Mahsa and Basiri, Raheleh and ZareianJahromi, Ehs}, title = {Control of Gain and Boresight of a Terahertz dipole Antenna by Parasitic Graphene Ribbons}, abstract ={Terahertz (THz) region includes frequencies between 0.1-10THz. Graphene has interesting features in THz frequencies making it a good candidate for utilization in THz communication systems. In this paper, a THz dipole antenna mounted on a SiO2 layer is proposed which is loaded by some parasitic graphene ribbons. The gain and boresight of antenna are varied through variation of chemical potential of graphene ribbons. The designed antenna can be employed in two frequencies 1THz and 1.3THz whereas antenna boresight steers between -62 to 62 degrees in both of E and H planes. Moreover, the resulting linear gain is varied between 1 to 6.6.}, Keywords = {Beam steering, Dipole antenna, Graphene, Reconfigurable, Terahertz.}, volume = {26}, Number = {0}, pages = {361-364}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2058-en.html}, eprint = {http://opsi.ir/article-1-2058-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Golchini, Arezo and Samadpour, Mahmoud and Abdizadeh, Karim}, title = {Polymeric encapsulation for improving the stability of perovskite solar cells}, abstract ={Due to the high efficiency in a short period of time, perovskite solar cells have received much attention today. But the low stability of these cells against temperature, humidity and light is a major challenge for them. In this study, the effect of polymer coatings on perovskite solar cell stability was investigated. The perovskite solar cells were encapsulated using different polymers such as polymethyl methacrylate and cyanoacrylate. To investigate the viability, cells were exposed to saturated  humidity at 90° C. The current-voltage curves of the cells were evaluated over time and the photovoltaic characteristics of the cells including short circuit current, open circuit voltage and their efficiency were investigated. The results of these experiments showed that co-deposition of polymethyl methacrylate and cyanoacrylate polymers had an effective role in enhancing the stability of perovskite solar cells.}, Keywords = {encapsulation, perovskite, solar cell, stability}, volume = {26}, Number = {0}, pages = {365-368}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2059-en.html}, eprint = {http://opsi.ir/article-1-2059-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {ShafiiMousavi, Narges and Abassi, Seyed Peyman and Razeghi, Fatemeh and Seyedzamni, Sas}, title = {Angular errors effects in micro-optic installation for Laser Bar Coupling}, abstract ={Semiconductor lasers exhibit unusual behavior against conventional optical elements due to spatial non-homogeneous in both fast and slow directions. In order to modify the behavior of these lasers, their beam parameter product (BPP) must be equal in both fast and slow directions. One of the method of beam shaping is using beam transformation system (BTS). The BTS installation needs the high accuracy tools. In this paper, the BTS element and coupling lens are simulated for coupling laser bar and the angular error was surveyed for optimization of installation process. The experimental results show the 75% coupling efficiency is achievable in improvement system.}, Keywords = {Beam shaping, Beam parameter product, Coupling, Beam transformation system}, volume = {26}, Number = {0}, pages = {369-372}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2061-en.html}, eprint = {http://opsi.ir/article-1-2061-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Azadi, Fatemeh and Hatami, Mohse}, title = {Plasmonic Sensor with Microstructure Optical Fiber for Stomach Failure Detection}, abstract ={In this paper a plasmonic biosensor based on microstructure optical fiber is simulated for detecting of human stomach failure.  This sensor is made by a 14 air holes in a hexagonal lattice, gold-coated fiber and a layer of stomach surrounds sensor when is using. By using Lumerical software, we obtain propagation mode and propagation constant in terms of refractive index in the range of gastric wall and gastric failure. Based on the obtained results by measuring propagation constant, it can detect the failure of different parts of the stomach.}, Keywords = {plasmonic, propagation constant, stomach.}, volume = {26}, Number = {0}, pages = {373-376}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2063-en.html}, eprint = {http://opsi.ir/article-1-2063-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Rezaeiankoochi, Soleiman and HatefiKargan, Naser and Daraei, Ahmadrez}, title = {Schottky barrier photodetector with High Responsivity}, abstract ={In this Paper, a structure of the gallium arsenide photodetector with a gold metal Schottky junction has been simulated. A metal grating was placed on the semiconductor layer. Metal grids with very narrow slits and sufficient depth, increase the transmission resonance for wavelengths larger than the grating period. To increase the light absorption, the slits distance was adjusted to excite surface plasmons at the metal-semiconductor junction.  excitation of surface plasmons at the metal-semiconductor junction, intensifies electromagnetic field at the junction. The photocurrent and responsivity of the photodetector were respectively 3.5 mA and 10.5 A/W at a bias voltage of 1V bias and at Wavelength of 850.}, Keywords = {Photodetector, Schottky barrier, surface plasmon, nano-grating.}, volume = {26}, Number = {0}, pages = {377-380}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2064-en.html}, eprint = {http://opsi.ir/article-1-2064-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Kalhor, Davood and Hashemzadeh, Mojtab}, title = {Investigation of Beam Waist of Laser in Electron-Hole Plasma}, abstract ={In this paper, the beam waist of laser with linear polarization is investigated by electron hole semiconductor nanoparticles plasma. Laser beam is assumed to be with Gaussian profile. Considering the perturbation theory and a standard method, the beam waist equation is obtained and their answers are studied analytically. Calculations show that as the carrier density increases, the laser beam waist diameter decreases.}, Keywords = {Beam Waist, Laser Beam, Electron, Hole, Semiconductor}, volume = {26}, Number = {0}, pages = {381-384}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2065-en.html}, eprint = {http://opsi.ir/article-1-2065-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Yaghoobi, Mohsen and Golshani, Mojtaba and Zamir-Anvari, Javi}, title = {Transverse Localization in a 1D Twisted Optical Waveguide Array}, abstract ={In this paper, we investigate the impact of rotation on Anderson localization in twisted array of optical waveguides, for different disorder strengths. To this end, the inverse participation rate is used as a measure of localization. The numerical results show that by increasing the rotation radius, the localization also increases.}, Keywords = {Anderson Localization, Twisted Optical Waveguide Array, Participation rate}, volume = {26}, Number = {0}, pages = {385-388}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2067-en.html}, eprint = {http://opsi.ir/article-1-2067-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Khorsandifard, Mahdieh and Gholamimehrabadi, Yashar and Jafari, Ki}, title = {Design and simulation of a Bio-MEMS sensor with optical detection}, abstract ={In this paper, a Bio-MEMS sensor is designed to detect biomolecules. This sensor is based on surface tension. When the sample is adjacent to the sensor, the target molecules present in the sample are absorbed by the receptors. The absorption of these molecules causes the plate to move. The amount of target molecules in a sample is determined by measuring the amount of displacement. The amount of displacement is measured using an optical ring resonator as all pass filter. The use of optical structure in detection has increased the sensitivity of this sensor. According to simulations, the optical sensitivity of this sensor is 005/0 . The first resonance mode for the sensor is 99 KHz and its bandwidth is 5 KHz.}, Keywords = {micro electromechanical systems, optical ring resonator sensor, waveguide.}, volume = {26}, Number = {0}, pages = {389-392}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2069-en.html}, eprint = {http://opsi.ir/article-1-2069-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Amiz, Zeinab and Mohebbi, Masou}, title = {High order harmonic generation using a coupled metal ellipsoidal core/shell nanoparticles}, abstract ={We investigate high-order harmonic generation (HHG) resulting from the interaction of argon gases with enhanced inhomogeneous electric field based on localized surface plasmon. These fields produced when an Ag coated around Au coupled ellipsoidal nanoparticles are illuminated by a short laser pulse. The results show that by applying a thin Ag coating around the nanoparticles, the field strength in the nanoparticles gap is such that the higher order harmonic generation can be achieved. Also, the significant field enhancement in argon in the vicinity of metal nanoparticles allows us to use much lower incident intensities than in typical HHG experiments. As a result it can be prevented nanoparticles from thermal destruction. Thus one can be apply this scheme to produce ultrashort XUV pulses with MHz repetition rates for many times.}, Keywords = {High-order Harmonic Generation, Ellipsoidal Nanoparticles, Enhanced electric field}, volume = {26}, Number = {0}, pages = {393-396}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2071-en.html}, eprint = {http://opsi.ir/article-1-2071-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Ansari, Narges and Fallah, Kimya and Mohebbi, Ensiyeh}, title = {Increasing the Absorption and the Broadband Absorption TMDCs with Using Photonic Crystals}, abstract ={Nowadays transition material dichalcogenide (TMDC) two-dimensional crystals due to direct band gap and a significant absorption in the visible region have been highly regarded in optoelectronic devices. The use of TMDCs in photonic crystals will increase the absorption and performances of them. In this paper, in order to design a structure with high absorption in a wide range of wavelength, TMDCs wrapping impact in three photonic crystals including SiO2, Si3N4 and TMDC has been investigated by using the transfer matrix method. Four TMDCs contains Molybdenum disulfide (MoS2), Molybdenum diselenide (MoSe2), Tungsten disulfide (WS2) and Tungsten diselenide (WSe2) which in best structures we reached to absorption higher than 66% (92%) in range of 400-700 nm (400-530nm).}, Keywords = {photonic crystals, broadband absorption, Transition material dichalcogenide monolayers, absorption}, volume = {26}, Number = {0}, pages = {397-400}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2072-en.html}, eprint = {http://opsi.ir/article-1-2072-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Ansari, Narges and Mohebbi, Ensiyeh and Fallah, Kimiy}, title = {Increasing Absorption of Rudin-Shapiro Quasi-Photonic Crystals Including MoS2 in Visible Range}, abstract ={Nowadays Molybdenum Disulfides (MoS2) have represented potential applications in optoelectronic devices which design of these devices is under debate in a wide optical range. In this paper, we design Rudin-Shapiro quasi-photonic crystals (quasi-PCs) based on Si3N4, SiO2 layers and MoS2 monolayers for increasing broadband and absorption spectra. Optical property of structures is calculated by Transfer matrix method teoretically which refractive index of the MoS2 monolayer was determined based on the Lorentz model. Absorption of this structure is achieved higher than 70% in visible range.}, Keywords = {Transfer Matrix Methods, Lorentz Model, Rudin-Shapiro Quasi-Photonic Crystals, Absorption Spectra, Molybdenum Disulfides.}, volume = {26}, Number = {0}, pages = {401-404}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2228-en.html}, eprint = {http://opsi.ir/article-1-2228-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Nobakht, Sara and Talebzadeh, Robabe and Naghshara, Hamid and Sobhanian, Sam}, title = {Effect of γ irradiation on the optical properties of ZnO thin film prepared by plasma sputtering}, abstract ={In this research work, ZnO thin film is deposited on a glass substrate. The films are exposed then to γ-rays from Co60 for two different periods. UV-Visible spectra of the exposed films are obtained by spectrophotometer and their surface topologies are obtained by an AFM(Atomic Force Microscope). The analysis of the spectra shows that the maximum absorption is occurred in 250-270 nm wavelength range and corresponds to the longer irradiation time, while maximum transmission occurs in the range of 280-300 nm for the same irradiation period.}, Keywords = {Sputtering, thin film, γ-ray, ZnO}, volume = {26}, Number = {0}, pages = {405-408}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2073-en.html}, eprint = {http://opsi.ir/article-1-2073-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Abdolalipoor, Fatemeh and Pourmahyabadi, Maryam}, title = {Design of Plasmonic Filter Based on Split Ring Resonator and MIM Waveguide}, abstract ={One of the most important issues in the design of optical resonators is the quality factor. In this paper, a plasmonic filter based on metal-dielectric-metal structure is designed and numerically analysed by finite difference time domain method. This structure consists of a split ring resonator coupled by input and output waveguides. The use of plasmonic structure revealed decreases of scattering and further light confinement. The performance of this structure in the term of light confinement at the subwavelength range is good. Also the resonance amplitude and wavelength can be adjusted by changing the split angle and geometrical parameters. This structure has a quality factor of 28.19 at the wavelength of 1550 nm.}, Keywords = {Split-ring resonator, Plasmonic filter, Quality Factor, MIM waveguide.}, volume = {26}, Number = {0}, pages = {409-412}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2075-en.html}, eprint = {http://opsi.ir/article-1-2075-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Moradi, Afshi}, title = {Effective medium theory of a composite of single-walled carbon nanotubes: Quasi-static approximation}, abstract ={In this paper, Maxwell-Garnett theory for the effective medium approximation of composite materials is developed to obtain the effective dielectric function of a composite of single-walled carbon nanotubes. To do this, a single-walled carbon nanotube is modeled by an infinitesimally thin cylindrical shell of the π and σ electrons and electronic excitations of this shell are described by means of the two-dimensional two-fluid hydrodynamic theory.}, Keywords = {Quasi-static approximation, Maxwell-Garnett theory, Single-walled carbon nanotube, Hydrodynamic theory}, volume = {26}, Number = {0}, pages = {413-416}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2076-en.html}, eprint = {http://opsi.ir/article-1-2076-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Mansouri, Morteza and Ghodrati, Maryam and Farmani, Ali and Mir, Ali}, title = {Design and simulation of a band-pass filter based on plasmonic- induced transparency}, abstract ={In this paper we introduce a band pass filter based on plasmonic induced transparency in nanometer scale, which includes a resonant cavity and a metal-dielectric-metal waveguide. Wide stop-band, sharp transition band, small dimensions and tunability are the advantages of the filter structure. The finite-difference time-domain method is used to analyze and simulate this structure.}, Keywords = {Band- pass filter, finite-difference time-domain, metal- dielectric- metal, plasmon- induced transparency.}, volume = {26}, Number = {0}, pages = {417-420}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2077-en.html}, eprint = {http://opsi.ir/article-1-2077-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Latifi, Afsaneh and RashidiHuyeh, Majid and Shaterian, Hamid rez}, title = {Magnetite/Silica/Silver Nanoparticles: Synthesis and Optical Properties}, abstract ={In this study, first the magnetite nanoparticles encapsulated by silica were synthesized by one-pot co-precipitation method. These Magnetite/silica nanoparticles were then covered by a silver shell through chemical reduction with different reduced time durations. Structures were characterized with XRD and FT-IR, which confirmed the formation of magnetite/silica/silver nanoparticles. In order to study the optical properties of samples, were evaluated their absorbance spectra in UV-Vis domain. The results showed that by increasing silver shell thickness, the absorption pic, related to surface plasmon resonance, shift to short wavelength and its amplitude increases.   }, Keywords = {“Magneto-plasmonic”, “Magnetit/silica/silver nanoparticles”, “Surface plasmon resonance”}, volume = {26}, Number = {0}, pages = {421-424}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2078-en.html}, eprint = {http://opsi.ir/article-1-2078-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {DehghaniFirouzabadi, Mojtaba and Nikoufard, Mahmoud and Pahlavanshamsi, Mohammad rez}, title = {Investigation of Hybrid Plasmonic Waveguide with DDMEBT Polymer}, abstract ={Beyond the diffraction limit, plasmonic waveguides (PWs) have the ability to manipulate light at nanoscale structures through surface plasmon polaritons (SPPs) at metal-dielectric interface. Much interest has been paid to PWs because they are promising candidates for developing highly-dense integrated photonic circuits. Hybrid plasmonic waveguides (HPWs) are recent novel type of PWs, which have shown a favorable balance between mode confinement and propagation loss. In this paper a multi-layer HPW including DDMEBT dielectric layer is proposed and it's modal properties such as effective refractive index, propagation length and effective mode area using finite element method (FEM) is calculated. Also performance of HPW is evaluated using figure of merit (FoM). In this waveguide effective mode area is achieved in the range of 0.027-0.069𝝁m2. Such waveguides structures can be utilized for ultra-compact nano-photonic devices.}, Keywords = {Effective refractive index, Effective area, Figure of merit, Hybrid plasmonic waveguide, Propagation length.}, volume = {26}, Number = {0}, pages = {425-428}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2079-en.html}, eprint = {http://opsi.ir/article-1-2079-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Alipour, Samira and Jandaghi, Maryam and Mohammadzahery, Zahra and Hajinia, Elmira and Salimianrizi, Saeed and JavadiDashkasan, Mohammad and Nabavi, Seyyed Has}, title = {Design and fabrication of Energy Scavenging amplifier for Passively Q-switched microchip laser}, abstract ={Microchip lasers have low optical efficiency because of low absorption of pump light in small cavity. In this study energy scavenging amplifier for passively Q-switched microchip laser is designed and fabricated. The amplifying of energy is done with one pass amplifier in this research higher than 3 and the maximum energy of amplifier is 193µj in this microchip laser. Enhance of energy is done with minimal cost and complexity in this method of Microchip laser amplifying.}, Keywords = {Passively Q-Switched Microchip Laser, Amplifier, Pump Scavenging}, volume = {26}, Number = {0}, pages = {429-432}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2080-en.html}, eprint = {http://opsi.ir/article-1-2080-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Mohammadzahery, Zahra and Jandaghi, Maryam and Alipour, Samira and Hajinia, Elmira and Salimianrizi, Saeed and Dashkasan, Mohammad and Nabavi, Seyyed has}, title = {Increasing the power of passively Q-switched microchip lasers to 0.5MW by modification of the cavity characteristics and pumping system}, abstract ={Passively Q-switched microchip lasers are robust, compact and inexpensive sources of several kilowatts, coherent sub-nanosecond pulses at high repetition rates. In this paper it is demonstrated that by modification of the crystal characteristics and pump power we can reach to the 250µJ pulse energy and 450ps pulse duration at 1kHz repetition rate. In addition the effect of some properties of pumping system on pulse energy is demonstrated. High-power microchip lasers are suitable for second, third and forth harmonic generation because of their short pulse duration and high peak power. Moreover, relatively high energy of pulses can increase the efficiency of amplifier systems effectively.   }, Keywords = {Solid state laser, High power microchip-laser, Sub nanosecond pulse, Diode pump laser.}, volume = {26}, Number = {0}, pages = {433-436}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2081-en.html}, eprint = {http://opsi.ir/article-1-2081-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Khoshsima, Habib and Bemani, Mohamad and Iraji, Mahdi}, title = {Study of parameters affecting the solar energy harvesting in spiral nano-antennas}, abstract ={Solar energy harvesting systems including an antenna and a rectifier are called rectenna. solar energy harvesting in this system is based on generating a time varying current on the surface of antenna by the time of radiation of an electromagnetic wave to this type of nano-antenna, leading to producing a potential difference at the antenna feed site where using a suitable rectifier, an appropriate DC power gets produced. The efficiency of this system depends on the design, geometry, dimensions, and characteristics of the nano-antenna, conductor, and rectifier used in it. This paper deals with the design and simulation of a silver helical nano-antenna to study the input impedance, radiation efficiency and polarization efficiency of the nano-antenna. The studied wavelength range is from 300 to 300 nm. Input impedance, because of its geometrical structure, has relatively linear behavior in all wavelengths except the wavelengths below 500 nm. In this particular scheme, the obtained efficiency of radiation from 700 to 2600 nm is more than 80%. Polarization efficiency is almost 100 percent in most bandwidths which results in increase of solar energy harvesting.}, Keywords = {Nano-antenna, Rectenna, Solar energy harvesting, Radiation efficiency, Polarization efficiency, Input impedance}, volume = {26}, Number = {0}, pages = {437-440}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2082-en.html}, eprint = {http://opsi.ir/article-1-2082-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Hajinia, Elmira and Alipour, Samira and Jandaghi, Maryam and Mohammadzaheri, Zahra and Salimianrizi, Saeed and Dashkasan, Mohammad and Nabavi, Seyed Has}, title = {Micromachining of Yb:YAG crystal using passively Q-Switched Nd:YAG microlaser}, abstract ={In this paper we have investigated the micromachining of Yb:YAG crystal using passively Q-Switched Nd:YAG microlaser with 450ps pulse width and 250µj energy per pulse. The laser beam after passing appropriate optics was focused on the crystal surface that was translated in the focal point and fabricated the microchannel structure by the plasma ablation. Depend on laser beam roundtrip the mirochannels depth were different. We also report the Yb:YAG crystal cutting by scribe and break method. In this way first a microchannel was fabricated (scribing line) and then CO2 laser beam was used to irradiate on it to separate the crystal with smooth cut edges and without cracks.}, Keywords = {Yb:YAG crystal, Nd:YAG microlaser, micromachining}, volume = {26}, Number = {0}, pages = {441-444}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2083-en.html}, eprint = {http://opsi.ir/article-1-2083-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Aghdaee, Mohammad reza and Abdollahpour, Daryoush and MostafaviAmjad, Jafar and Mohamadkhani, Rami}, title = {Surface plasmon resonance with tightly focused beam}, abstract ={surface plasmon resonance (SPR) phenomenon has various applications in martial sciences, pharmaceutical products, clinical diagnostics and detecting environmental changes. Surface plasmon resonance can be utilized for measuring refractive indices of different media specially liquids. Several configurations have been so far used for such measurement, and most of them are either based on scanning incidence angle or wavelength which lead complications for practical use. In this article we propose a method for SPR detection using tightly focused beam without the need for angle or wavelength scanning. Presented experimental results sufficiently verify the efficiency of the reported method.}, Keywords = {Surface plasmon resonance, Tightly focused beams, Microscopy}, volume = {26}, Number = {0}, pages = {445-448}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2084-en.html}, eprint = {http://opsi.ir/article-1-2084-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Nasiri, Ali and ZandiGoharrizi, Azita and Safari, Hassan and Alahyarizadeh, Ghasem}, title = {Study of the effect of AlGaN electron blocking layer on the characteristics of InGaN/GaN MQW solar cells}, abstract ={In this paper, to investigate the effect of AlGaN electron blocking layer (EBL) on the characteristics of InGaN/GaN multi-quantum-well solar cells, at first this structure without EBL layer was simulated using Silvaco-atlas software and efficiency of 27.80% was achieved. Then by inserting a 20nm p-Al0.1Ga0.9N electron blocking layer the cell characteristics was evaluated for different doping values, and the optimal efficiency for 2×1019 cm-3 doping concentration was obtained 40.05%. Simulation results show that inserting the p-AlGaN EBL layer to the cell structure increased the conduction band offset. This will block the flow of electrons to the p-region, consequently the solar cell efficiency will be increased due to the reducing of recombination and improving the hole collection.}, Keywords = {Efficiency, Multi-quantum-well, Solar cell, Simulation, Electron blocking layer}, volume = {26}, Number = {0}, pages = {449-452}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2085-en.html}, eprint = {http://opsi.ir/article-1-2085-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Mohamadi, Fatemeh and Nouroozi, Rahm}, title = {Optical Fiber Sensor recording temperature changes based on Mach-Zehnder interferometer}, abstract ={The use of fiber optics has grown dramatically in various industries. It is not possible to transmit high volumes of data in very short time, except using optical fiber. One of the important uses of optical fiber is its use in sensor manufacturing. In fact, the use of optical fiber in the manufacture of sensors, the transfer of numerous fiber benefits to the instrument industry. One of the important physical temperatures is temperature. Finally, the optical fiber temperature sensor has been reported using single-mode fiber optics. This sensor is based on the Mach-Zander interferometer, which operates based on phase modulation. in this study, method has been used which is a very accurate and simple method for measurement. also, to increase the speed of data transmission and simplicity of design of fiber fiber. The temperature measurement speed of this sample is 0.5  s.}, Keywords = {optical Fiber , recording temperature changes Sensor, Mach-Zander Interferometer.}, volume = {26}, Number = {0}, pages = {453-456}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2087-en.html}, eprint = {http://opsi.ir/article-1-2087-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Sabatyan, Arash and Hadi, Sanaz}, title = {Exploring focusing features of off-axis square zone plate}, abstract ={In this article, a square zone plate is introduced which focuses a plane incident wave into a point located out of the optical axis. This new plate is called off-axis square zone plate. The focusing properties of the element is studied. We show that by changing a parameter called as shifting parameter the focused beam is displaced over the focal plane. As a result, by examining the intensity profile, it can be seen that the widths of the focal spots are approximately the same. All simulation results are verified by the corresponding experiments.}, Keywords = {Diffraction- Diffractive lens– Beam Structuring– Off-axis Lens}, volume = {26}, Number = {0}, pages = {457-460}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2091-en.html}, eprint = {http://opsi.ir/article-1-2091-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Yousefi, Abolfazl and Jafari, Hamid and Khorsandi, Majid and Feghhi, Seyed Amir Hosein and Faezmehr, Ardal}, title = {Optical characteristics, single-line and multi-line imaging analysis of TCD1304AP CCD for using in gamma ray tomography system}, abstract ={Charged Couples Devices (CCDs) are imaging sensors which are consisted from many pixels and because of this reason, they can work as a position sensitive detector. In this project, TCD1304AP has been installed and used to take 2D images. In this way, single-line images have been taken first in order to obtain image resolution and then by using an optical lifter for moving samples in vertical direction, multi-line images have been taken. At the end of this project, image improvement technics such as noise reduction on A/D converter, increasing of imaging numbers for each step and applying averaging filter on them have been implemented.}, Keywords = {Optical imaging, Charged Couples Devices, image improvement, single-line, multi-line}, volume = {26}, Number = {0}, pages = {461-464}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2093-en.html}, eprint = {http://opsi.ir/article-1-2093-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Faezmehr, Ardalan and Khorsandi, Majid and Jafari, Hamid and Feghhi, Seyed Amirhossei}, title = {Optical characteristic measurement and comparison of three PIN photodiodes for using in x-ray tomography imaging system}, abstract ={In recent decades, solid state detectors had a great role in imaging systems specially in x-ray computed tomography systems as in many of them, coupled photodiodes with scintillator are used. In this project, three commercial PIN photodiodes (BPW34B, BS500B and SGPD30C) have been tested for making CT-scan x-ray detector array. In this way critical optical parameters of photodiodes have been measured and subsequently by considering effective factors such as price, active and death area of photodiodes in arrayed shape, results have been reported. Parameters which have been measured are: dark current in zero biased and reverse biased state for four different voltages, photodiode response to light emission diodes (LEDs) with three different wave lengths which are matched with CsI(Tl) scintillator. Results showed that using BPW34B for this work is much more accessible, comfortable and with appropriate results.}, Keywords = {Photodiode detector, PIN photodiode, Dark current, Light emission diode}, volume = {26}, Number = {0}, pages = {465-468}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2094-en.html}, eprint = {http://opsi.ir/article-1-2094-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Hasani, Khosro and Arefitabar, Javad and Sohrabi, Sahar}, title = {Measurement of the phase profile using the incoherent self-imaging}, abstract ={Measurement of phase variation profile in phase objects is of great importance in optics, fluids, and biology.  The incoherent self-imaging phenomenon is based on diffraction of light which is very sensitive to variations in the optical path length, so that the self-image may be affected by phase variations due to the presence of a phase object inserted in the image path. In this work the results for the measurement of 2D phase profiles of phase objects using the combination of the incoherent self-imaging and the Moiré phenomena are presented. High phase sensitivity, resilience against unwanted disturbances, being a non-destructive and whole-field technique are the advantages of the proposed technique compared with other similar methods.   }, Keywords = {phase objects, self-imaging, phase profile}, volume = {26}, Number = {0}, pages = {469-472}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1948-en.html}, eprint = {http://opsi.ir/article-1-1948-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Hasani, Khosro and Khami, Samaneh and Tavassoly, Mohammad taghi}, title = {Determination of the phase profile in transparent objects using Fresnel diffraction from a circular phase step}, abstract ={In this paper a novel method for determination of the two-dimensional phase profile of transparent objects based on Fresnel diffraction from a circular phase step is proposed. Evidence on the efficiency of this method is provided through computer simulations and experiments on 10-micron size glass beads. The results show that the proposed method can, in principle, be used as a novel phase microscopy technique to study phase objects with many applications in biology. }, Keywords = {Phase step, Fresnel diffraction, phase microscopy}, volume = {26}, Number = {0}, pages = {473-476}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1949-en.html}, eprint = {http://opsi.ir/article-1-1949-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Panahi, Tahereh and Nozhat, Najmeh}, title = {Design and Simulation of Broadband Plasmonic Switch Based on Vanadium Dioxide in Infrared Region}, abstract ={In this paper, a plasmonic nanoswitch that is composed of vanadium dioxide (VO2) in infrared region is designed and simulated. The optical switching of this nanostructure is due to the phase transition of insulation to metal in the VO2 layer with temperature change. The phase transition of the VO2 layer results in a change in the absorption spectrum of the nanostructure. By choosing the values of 340 nm and 20 nm for the thicknesses of the SiO2 and VO2 layers, respectively, the absorptions of above 99% in the insulation phase and near zero in the metal phase are obtained. Therefore, the attained extinction ratio of the proposed switch is 11.8 dB. Obtained results demonstrate the high potential of vanadium oxides as efficient material for plasmonic devices such as modulators and sensors at optical frequencies.}, Keywords = {Extinction Ratio, Plasmonic Switch, Surface plasmon, Vanadium Dioxide.}, volume = {26}, Number = {0}, pages = {477-480}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2095-en.html}, eprint = {http://opsi.ir/article-1-2095-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Shokrane, Fahime and Soofi, Hadi}, title = {Design and modeling of integrated optical modulator based on linear electro-optic effect in Barium Titanate}, abstract ={Barium Titanate is a ferroelectric material with a large Pockels coefficient and hence utilizing this material for optical modulators is very promising. In this article, an optical modulator based on silicon on insulator platform is designed and simulated. This modulator employs hybrid plasmonic slot waveguides with Ag and Silicon rails and optical to hybrid mode converters at the inpu and output of the structure. Designed modulator exhibits a half wave voltage, length product of 0.02 Vmm which is extremely low compared to other Mach-Zehnder modulators. Moreover, the design presented in this article, has an insertion loss of approximately 3dB in the wavelength range of 1.45 to 1.65mm.}, Keywords = {Barium Titanate, Plasmonics, Pockels effect, Hybrid waveguide, Optical modulator}, volume = {26}, Number = {0}, pages = {481-484}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2096-en.html}, eprint = {http://opsi.ir/article-1-2096-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Jafarpour, Motahareh and Rostami, Mohammad and MajlesAraa, Mohammad Hossei}, title = {The characterization of the structural, magnetic, electrical and optical properties of barium hexaferrite nanoparticles synthesized by the co-precipitation method}, abstract ={In this study, barium hexaferrite nanoparticles were synthesized by the co-precipitation method, and the structural, electrical, magnetic and optical properties were considered. In order to investigate the structural properties, XRD analyze have been used, the results show that the synthesized powders have the dominant phase of M-type hexagonal ferrite with space group P63/mmc. The crystallite size is calculated to be 79.52nm using the Scherrer equation. The magnetic properties were also investigated by VSM analysis. UV-VIS analysis was employed to investigate the optical properties and measurement of energy band gap. The direct band gap size of the barium hexaferrite nanoparticles is calculated to be 2.269 eV using the Tauc equation.}, Keywords = {Nanoparticles, co-precipitation method, Barium ferrite, Optical properties, Energy band gap}, volume = {26}, Number = {0}, pages = {485-488}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2098-en.html}, eprint = {http://opsi.ir/article-1-2098-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Yaghoobi, Amin and Darbari, Sara and Nabavi, Abdolrez}, title = {Fabrication of a Surface Acoustic Wave Photodetector}, abstract ={In this paper a surface acoustic wave photodetector is investigated. This photodetector works based on acousto-electric effect, which its resonance frequency and output signal amplitude change by exposure of blue light (450nm wavelength) with different powers. The resonance frequency is determined by Inter Digital Transducer (IDT) design. By applying AC signal to the input IDT, SAW can be created on the surface of piezo-electric layer. In this paper, ZnO is used as piezo-electric material and sensing layer. Resonance frequency of the fabricated device is about 89.6 MHz and its sensitivity is 0. 375  with the approximate error of 4%.}, Keywords = {Acousto-electric effect, Piezo-electric, Resonance frequency, SAW, Surface Acoustic Wave}, volume = {26}, Number = {0}, pages = {489-492}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2099-en.html}, eprint = {http://opsi.ir/article-1-2099-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Alizadeh, Mehdi and Ghotbi, Masoo}, title = {Identifying crossing collagen fibers in different depths of human cornea tissue using pSHG microscopy}, abstract ={Recently, polarization sensitive second harmonic generation (pSHG) microscopy has become a powerful tool for studying the human cornea tissue. The obtained results by pSHG may be misleading in the crossing points of two different collagen fiber bundles. The results can be improved and become more reliable by detecting and filtering out the crossing points. In this article, the possible changes in the results of pSHG microscopy with respect to the depth of the crossing points have been investigated. The results show that the proposed technique is able to identify and filter out the crossing points of the collagen fibers in different depths of the cornea.}, Keywords = {Cornea, Medical and biological imaging, Nonlinear Microscopy, Polarization, Second harmonic generation.}, volume = {26}, Number = {0}, pages = {493-496}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2100-en.html}, eprint = {http://opsi.ir/article-1-2100-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {KazemiEsfeh, Pardis and Alaei, Zahr}, title = {Design and optimization of photonic crystal nano temperature sensor}, abstract ={In this article we try to optimization photonic crystal nano sensor for sensing temperature from 0 to 540 degrees centigrade. This nano sensor designed with two waveguides and one hexagonal ring resonator in hexagonal photonic crystal lattice. Maximum operation parameters: quality factor, temperature sensitivity, and transmission efficiency are 628.74, 65.55 pm/°C, and 100%, respectively; hence, these are good quality. The dimensional of designed nano sensor is compact and small, so it is very suitable for optical integrated circuits.}, Keywords = {Optical Sensor, Photonic Crystal, Photonic Crystal Temperature Sensor, Temperature Sensitivity.}, volume = {26}, Number = {0}, pages = {497-500}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2102-en.html}, eprint = {http://opsi.ir/article-1-2102-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {RoohbakhshTayarani, Amirreza and Shokooh-Saremi, Mehr}, title = {Design and Simulation of Terahertz Circular Waveguide with Metamaterial Cladding}, abstract ={Functionality of terahretz waveguides can be improved by using metamaterials as their cladding. There is a type of metamterials, so-called hyperbolic metamaterial (HMM), which is anisotropic. By using (HMM) in cladding of THz waveguides, the transmission loss can be decreased. In this article, we design a THz circular waveguide with (HMM) cladding to achieve lower transmission loss in the same bandwidth as the previous research. Also by employing homogenization, the designed inhomogeneous waveguide is transformed to a homogeneous one with approximately similar electromagnetic characteristics also this homogeneous structure with lower complexity in cladding is more straightforward to analysis and simulation.}, Keywords = {Circular Waveguide, Homogenization, Metamaterial, Terahertz.}, volume = {26}, Number = {0}, pages = {501-504}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2103-en.html}, eprint = {http://opsi.ir/article-1-2103-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Khodabandeh, Zahra and Monfared, Mohammad and Sadighi-Bonabi, Rasoul and Majlesara, Mohammad Hossei}, title = {The Influence of increasing of laser field intensity on high-order harmonic spectrum and attosecond generation in the fluorine molecule}, abstract ={The Influence of increasing of laser field intensity on high-order harmonic spectrum and attosecond generation by femtosecond laser field with linear polarization is investigated in the fluorine molecule. This investigation is done using time-dependent density functional theory in a three-dimensional space by Octopus code. Increasing the intensity of the pulsed laser fields cause enhancement of the cutoff frequency and reduction of the output pulse durations.}, Keywords = {high-order harmonic generation, cutoff, attosecond generation}, volume = {26}, Number = {0}, pages = {505-508}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2104-en.html}, eprint = {http://opsi.ir/article-1-2104-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Amani, Marziye and Bavali, Ali and Ahmadinouri, Fatemeh and Afshar, Melika and Rahmatpanahi, Ali and Soltaninezhad, Mohamm}, title = {Experimental investigation of optical anisotropy in cancerous tissues by enhanced backscattering technique}, abstract ={In this research, mean scattering length of the laser light propagating in healthy and cancerous tissues of bladder, colon, and liver organs is measured using enhanced backscattering (EBS) technique. Analysis of the recorded backscattering cones by a high resolution CCD camera reveals the strength and degree of optical anisotropy in various normal and cancerous tissues. Pathology data show that the experimental results are correlated to the morphological changes of the epithelial tissues that strongly depend on the type of the epithelial cells as well as the carcinoma type. Accordingly, liver and colon tissues showed the highest and lowest changes in scattering length and optical anisotropy, respectively.}, Keywords = {Enhanced backscattering, optical anisotropy, cancerous tissues, epithelial tissues}, volume = {26}, Number = {0}, pages = {509-512}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2105-en.html}, eprint = {http://opsi.ir/article-1-2105-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Afshar, Melika and Bavali, Ali and Amani, Marziye and Rahmatpanahi, Ali and Ahmadinouri, Fatemeh and Soltaninezhad, Mohamm}, title = {Experimental studying of random lasing in highly concentrated Rd6G solution using dimeric fluorescence emission}, abstract ={In this research, coherent modes of random laser are observed in highly concentrated Rhodamine 6G solutions (close to the solubility limit). The statistical survey of the spikes in the successive spectra as well as the coherent backscattering test of the sample indicates that these modes are provided by constructive interference events due to multiple scattering of photons within medium. The results are explained based on the monomer aggregation and radiative/non-radiative energy transfer processes according to the exciton theory. The scattering feedback besides strong reabsorption of monomeric emission by dimers provides RL spikes over low quantum yield dimeric fluorescence spectra.}, Keywords = {Random laser, fluorescence emission, Rd6G solution, monomer, dimer.}, volume = {26}, Number = {0}, pages = {513-516}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2106-en.html}, eprint = {http://opsi.ir/article-1-2106-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Rahmatpanahi, Ali and Bavali, Ali and Ahmadinouri, Fatemeh and Amani, Marziye and Afshar, Melika and Soltaninezhad, Mohamm}, title = {Optical system for cleaning and inspection of electric power line insulators (glass and ceramic) using laser ablation and depolarization technique}, abstract ={Inspection and maintenance of electric power line insulators is one of the necessities of maintenance of electric power line network. Different methods are used for proper maintenance of insulators i. e. manual (cold line) or using some devices such as unmanned helicopter and vehicles (hot line). In this work, a new method is proposed for removing contamination of electric power line insulators using laser and depolarization technique. In this method, cleaning insulator’s contamination can be performed by using Nd: YAG laser to ablate contaminations. Moreover, in order to prevent insulator damage during cleaning, depolarization technique is proposed supported by a robotic system.}, Keywords = {Nd: YAG laser, Depolarization technique, Cleaning Power Line Insulators cleaning.}, volume = {26}, Number = {0}, pages = {517-520}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2107-en.html}, eprint = {http://opsi.ir/article-1-2107-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Mashhadi, Alireza and Bavali, Ali and Hashemi, Mohsen and MokhtariKheyrabadi, Farz}, title = {Measurement of hydroxymethyl furfural (HMF) by quantitative analysis of laser induced fluorescence spectra to detect freshness of honey}, abstract ={In this research, the effect of increasing the amount of Hydroxymethylfurfural (HMF) over time in fresh unifloral honey on the laser induced fluorescence (LIF) spectra has been investigated. In the proposed method a quantitative factor is introduced to discriminate LIF spectra of fresh and one-year-old unifloral honey which accurately measures the concentration of hydroxymethyl furfural content. The experimental results reveal that with this fast, accurate, non-destructive and low-cost approach we can distinguish fresh unifloral honeys of different botanical origin from their one-year sample.}, Keywords = {Unifloral honey, Freshness of Honey, laser induced fluorescence, HMF.}, volume = {26}, Number = {0}, pages = {521-524}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2108-en.html}, eprint = {http://opsi.ir/article-1-2108-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Hosseinikia, Seyyede Hajar and Rezaeipandari, Mohammad and Arabanian, Atoosa sadat and Soleimani, Neda and Massudi, Rez}, title = {Wavelength dependence of rate of drug delivery to murine melanoma under the thermal effects of gold nanoparticles interaction with nanosecond laser}, abstract ={Interaction of the short-pulse lasers with metal nanoparticles leads to produce a large amount of heat around the nanoparticles. Today, it is used for cancer therapy, drug delivery and other medical applications. In this article, the process of drug delivery to murine melanoma under the thermal effects of gold nanoparticle interaction with three different wavelengths of Nd:YAG nanosecond laser in infrared, visible and ultraviolet regimes, is investigated and drug delivery rate and cell viability rate for these three different wavelengths is measured and finally, it is observed that for a specific amount of energy, the drug delivery rate in visible regime is more than that in ultraviolet and infrared regimes.}, Keywords = {Cell drug delivery, nanosecond-pulse laser, gold nanoparticles}, volume = {26}, Number = {0}, pages = {525-528}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2109-en.html}, eprint = {http://opsi.ir/article-1-2109-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Hosseinikia, Seyyede Hajar and Rezaeipandari, Mohammad and Arabanian, Atoosa sadat and Massudi, Rez}, title = {Investigation of the effect of laser parameters on the heat produced in the interaction of nanosecond pulse with gold nanoparticles}, abstract ={the produced heat in the interaction of nanosecond pulses with gold nanoparticles has many applications in medical field like cancer cell killing and cell drug delivery. Depending on the applications, the amount of heat needed would be different. Laser parameters and geometrical characteristic of gold nanoparticles are efficient factors on the produced heat. In this article, simulation of the amount of produced heat in the interaction of gold nanoparticles in cell culture medium with nanosecond laser for different laser parameters is performed and the effect of distance from nanoparticle surface on the produced heat is investigated.}, Keywords = {nanosecond laser pulse- gold nanoparticle- thermal interaction}, volume = {26}, Number = {0}, pages = {529-532}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2110-en.html}, eprint = {http://opsi.ir/article-1-2110-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Roohforouz, Ali and EyniChenar, Reza and Azizi, Saeed and Rezaei-Nasirabad, Reza and Hejaz, Kamran and Vatani, Vahid and Nabavi, Seyed has}, title = {Pumping configuration effect on the transverse mode instability in high power fiber lasers}, abstract ={Transverse Mode Instability (TMI) as a substantial restriction for further power scaling of high-power fiber lasers has been investigated and its occurrence power threshold in a 3.02 kW level fiber oscillator has been compared in co-, counter- and bidirectional pumping schemes. Experimental results show that TMI power threshold in a bidirectional-pumping scheme is higher than that of co- and counter-pumping configurations. It is also observed that counter pumping method has higher TMI threshold than co-pumping scheme. The TMI threshold of bidirectional-pumping is higher than co/counter-pumping because the index gratings generated in the bidirectional-pumping scheme is smoother than that of co/counter-pumping configuration.}, Keywords = {Fiber lasers, Mode instability, Fiber oscillator, Transverse modes.}, volume = {26}, Number = {0}, pages = {533-536}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2112-en.html}, eprint = {http://opsi.ir/article-1-2112-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Ziasherzad, Ahmad and Zare, Hakimeh and Ostovari, Fatemeh and Pourghobadi, Zeinab and Shahedi, Zahra and Fazaeli, Yousef}, title = {Effect of pH on Optical Properties of Graphene Oxide Quantum Dots}, abstract ={Luminescent graphene oxide quantum dots (GOQDs) have attracted tremendous attention from the scientists in chemistry, materials science, physics and biology, because of their superiority of good stability, excellent optical and electrochemical properties, resistance to photo-bleaching and low cytotoxicity. In the study, GOQDs have synthesized using a simple and straight methodology. In the following, the synthesized GOQDs were characterized by infrared, UV–Vis absorption, photoluminescence spectroscopy and TEM microscopy. Then Optical properties as Luminescent and absorption of GOQDs with pH various were analyzed.}, Keywords = {Graphene Oxide, Quantum Dots, UV-Vis, photoluminescence, TEM.}, volume = {26}, Number = {0}, pages = {537-540}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2113-en.html}, eprint = {http://opsi.ir/article-1-2113-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Fallahkherad, Mohammad and Eslami, Pegah and Ghomi, Hamidrez}, title = {Optical Absorption and current density enhancement in TTF: TCNQ organic solar cell by Localized surface Plasmon}, abstract ={In this paper we investigated theoretically enhancement in optical absorption and current density in organic solar cell with finite different time domain(FDTD) method, due to the localized surface plasmons. we show that absorption and current density will increase due to scattering and sub bandgap passage between metal fermi level and LUMO of active layer with silver Nano rods inside TTF: TCNQ active layer.}, Keywords = {Optical absorbtion enhancement, Current density enhancement, Localized surface plasmon, Organic solar cell}, volume = {26}, Number = {0}, pages = {541-544}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2114-en.html}, eprint = {http://opsi.ir/article-1-2114-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Jadidi, Faeze and Asadnezhad, Mohammad and Eslamimajd, Abdollah and Erfaniyan, Alireza and MohseniArmaki, Seyed hossei}, title = {Design and simulation of an aspheric quasi-optical millimeter wave imaging system in 220 GHz}, abstract ={In this paper, a quasi-optical millimeter wave imaging system is designed at central frequency of 220 GHz. This system includes a combination of an aspheric dielectric lens in order to focus the beam and a conical horn to form resolution less than 20 mm at distance of 2.5 meters. The general parameters of this system are calculated using the geometrical optics method and the optical design software ZEMAX was utilized to simulate the lens. The designed dielectric lens is made of High Density Polyethylene and the aperture diameter of the system is 21 cm. Then, an optimum conical horn with gain 20 dB is designed that couple the concentrated radiation to detector. The simulation of the horn is performed using the commercial softwares FEKO and CST and the simulation results indicate that its combination with dielectric lens is appropriate for imaging in 220 GHz with high resolution.}, Keywords = {Aspheric lens, Geometrical optics, Horn, Millimeter wave imaging, Quasi-optics.}, volume = {26}, Number = {0}, pages = {545-548}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2115-en.html}, eprint = {http://opsi.ir/article-1-2115-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Khazaei, Giti and Dalafi, Ali}, title = {Squeezed state generation of a mechanical oscillator in a modulated Optomechanical system}, abstract ={In this paper, we have investigated the state evolution of an Optomechanical system in which the mechanical spring constant as well as the optomechanical coupling coefficient have been modulated. It has been shown that the presence of the modulation leads to the squeezing of the mechanical momentum while in the absence of this effect there is no mechanical squeezing. For this purpose, we first obtain the evolution of the quantum state of the system and then we calculate uncertainties in the position and momentum operators of the mechanical oscillator. We have shown that for certain amounts of mechanical modulation strength, the momentum operator of the mechanical oscillator is squeezed.}, Keywords = {Optomechanical systems, quantum state engineering of the mechanical oscillator, squeezed state generation.}, volume = {26}, Number = {0}, pages = {549-552}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2117-en.html}, eprint = {http://opsi.ir/article-1-2117-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Salimian, Soheila and Sehati, Nayere and Tavassoly, Mohammad kazem}, title = {Quantum teleportation with superconducting circuits}, abstract ={Quantum state transfer is a primitive principle in quantum information processing and quantum communication. In this line, quantum teleportation is transferring an unknown state without transferring the physical carrier of information from a sender (Alice’s lab) to a receiver (Bob’s lab) with classical and the quantum channels. Due to the importance of quantum teleportation, in this paper a new protocol of quantum teleportation using superconducting qubits and resonators is proposed. In this protocol, an entangled channel for teleportation of unknown state of Alice’s resonator is constructed by using flux qubits and applying an external magnetic field. Then, a coupling between the superconducting resonator and the qubit is created in Bob's lab. According to standard teleportation, Alice measures quantum Bell states and Bob successfully receives the unknown state of Alice's resonator with maximum fidelity by implementing quantum phase gate and unitary rotating operators.}, Keywords = {superconducting resonator, entanglement, quantum teleportation, phase gate, superconducting qubit}, volume = {26}, Number = {0}, pages = {553-556}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2118-en.html}, eprint = {http://opsi.ir/article-1-2118-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {SeyedNazari, Mir hossein and Ghasemi, Pouria and Hosseini, Seyedeh Mahshad and Arefnia, Fatemeh and FahanikBabaei, Javad and Eliassi, Afsaneh and Zibaii, Mohammad Ismail}, title = {Controlling of Current Across Lipid Membranes using Laser-Induced Gold Nanoparticle Heating}, abstract ={In this paper, we used temperature manipulation a bilayer lipid membrane (BLM) to reversibly control the electrical resistance and the amount of current that flows through the bilayer membrane with pA resolution. For this experiment, heating is achieved by irradiating AuNPs that are surrounded by the bilayer membrane with laser light at their plasmon resonance frequency. Obtained results show that the AuNPs convert light into local heating, creating small and localized heat sources, lead to the formation of a small pore in the lipid membrane and ultimately allowing increasing the permeability of BLMs. The whole process is monitored with bright field microscopy and patch-clamp equipment. This approach of controlling biological systems and cellular function with high Spatio-temporal resolution can be used for neuronal photostimulation.}, Keywords = {Optical stimulation, Plasmonic heating, Phospholipid membrane, Gold nanoparticle}, volume = {26}, Number = {0}, pages = {557-560}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2119-en.html}, eprint = {http://opsi.ir/article-1-2119-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {SeyedNazari, Mir Hossein and Chavoshinezhad, Sara and Hosseini, Mohammad and Karimitar, Hedieh and Dargahi, Leila and Latifi, Hamid and Zibaii, Mohammad Ismail}, title = {Differentiation of Human Dental Pulp Stem Cell using Optical Stimulation of Gold Nanoparticle}, abstract ={In this article, the photothermal stimulation technique was used for cell differentiation of human dental pulp stem cells (hDPSCs) into nerve cells. Experimentally the hDPSCs were plated at the density of 150000 cells/ml in T25 flask and treatment with AuNPs in 10-5 ppm and 10-1 ppm. Then optical stimulation was conducted. A day after the last light stimulation, the viability of cells was analyzed with the MTT assay. The result of the MTT assay revealed significant more viability in photothermal stimulation as compared with the control group. In addition, we compared this method with the optogenetic technique using opsin-expressing hDPSCs. For the assessment of differentiation, the expression of gene Tubulin was studied. Analysis of quantitative PCR (qPCR) data shows that both technics can differentiate the stem cells from neuron cells.}, Keywords = {Optogenetic, Optical stimulation, Stem cells, Plasmonic heating, gold nanoparticle}, volume = {26}, Number = {0}, pages = {561-564}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2120-en.html}, eprint = {http://opsi.ir/article-1-2120-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Sediqy, Abdulwares and Zare, Hakimeh and Shahedi, Zahr}, title = {Synthesis and Electroluminescence characterization of Znq2 and Znq2 with CTAB organic-metal complexes}, abstract ={High luminescent Znq2 particles were synthesized by the simple precipitation method in pure form and with cetyltrimethyl ammonium bromide (CTAB) as cationic surfactant. The crystalline nature of title samples was confirmed by powder X-ray diffraction. The morphology of the samples was studied by scanning electron microscope. The functional groups of these nanoparticles were analyzed and assigned using the Fourier transform infrared spectroscopy spectral study. The optical property of Znq2 and Znq2: CTAB was confirmed by UV–Vis spectral study. The synthesized Znq2 and Znq2: CTAB nanoparticles were confirmed by photoluminescence studies for organic-light-emitting diode applications as emission and electron transport layers.}, Keywords = {Znq2: CTAB, nanostructures, SEM, UV–vis, Photoluminescenc.}, volume = {26}, Number = {0}, pages = {565-568}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2121-en.html}, eprint = {http://opsi.ir/article-1-2121-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Hajian, Mahshad and Ansari, Mohammad Ali and Niknam, Alirez}, title = {Study of skin Tissue Heating by Microwave Radiation}, abstract ={In this paper, the thermal response of human skin tissue under microwave irradiation is investigated by both the finite-difference time-domain (FDTD) simulation and an analytical method. Given that in the electromagnetic heating, the temperature distribution within a sample greatly depends on the dielectric properties which are functions of frequency, temperature and the composition of the object, therefore, we presented a method to incorporate temperature dependent properties of the skin tissue in determining the temperature distribution at different times. Our results show that there is a significant resonance in a certain frequency.}, Keywords = {Skin, Microwave, Finite difference time domain method}, volume = {26}, Number = {0}, pages = {569-572}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2236-en.html}, eprint = {http://opsi.ir/article-1-2236-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Rashid, Elham and Shourshieni, Seyede zahra and Shirvani-Mahdavi, Hamid-rez}, title = {Quantitative analysis of toxic elements in tattoo inks using Laser spectroscopy}, abstract ={In the present research work, the Laser-induced breakdown spectroscopy (LIBS) technique is applied to explore the concentration of toxic elements being in tattoo inks. The elemental analysis of chromium (Cr), manganese (Mn), titanium (Ti), cobalt (Co), and lead (Pb) are selected as elements in cosmetic products. Three different colors of tattoo inks are selected. The observed spectral lines of all elements are used to calculate their concentration in all samples through the internal standard method. The calculated concentrations are then compared to permissible limits set by the Food and Drug Administration with regard to the cosmetics industry.  Moreover, the discriminant function analysis (DFA) statistically reveals the differences between tattoo inks from various aspects. }, Keywords = {Laser Spectroscopy, Quantitative Analysis, Tattoo, Heavy Metals, Discriminant Function Analysis (DFA)}, volume = {26}, Number = {0}, pages = {573-576}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2122-en.html}, eprint = {http://opsi.ir/article-1-2122-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Shabanlou, Ensiyeh and Jaleh, Babak and FeiziMohazzab, Behnaz and Mahmoudi, Fatemeh and Momeni, Amir}, title = {The Formation of TiN Structure on Titanium Target in Nitrogen Atmosphere by Laser Ablation}, abstract ={In this research with the objective of increment in the mechanical hardness of titanium, its surface was irradiated using fiber laser in the nitrogen gas chamber. To investigate the irradiation time, different samples were prepared with the same irradiation conditions except irradiation time. X-ray diffraction, scanning electron microscopy, and Vicker’s microhardness indenter were utilized to scrutinize the crystalline structure, morphology, and mechanical hardness of samples, respectively. Results show the titanium nitride formation on the surface. In addition, increase in the irradiation time results in a denser titanium nitride structure and higher microhardness of titanium surface.}, Keywords = {Irradiation time, Nitrogen gas, Mechanical hardness, Titanium, Titanium nitride.}, volume = {26}, Number = {0}, pages = {577-580}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2123-en.html}, eprint = {http://opsi.ir/article-1-2123-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Malekzadeh, Peyman and Parsanasab, Gholam mohamad and Mohajerani, Ezzedi}, title = {Fabrication and Polarization Characterization of SU8 Waveguides in Optical Integrated Circuits}, abstract ={In this paper we emphasize on importance of optical integrated circuit in technology and material that used in fabrication of them. We also study the fabrication of polymeric waveguides with SU8 -2002.this material is a negative photoresist which changes from monomer to polymer by UV lithography and after developing and eliminate of monomers from sample surface can have any designed structures. Besides, the influence of polarization variation in this type of waveguides will be discussed.}, Keywords = {coupling, Lithography, Photoresist, Polarization, Polymer}, volume = {26}, Number = {0}, pages = {581-584}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2124-en.html}, eprint = {http://opsi.ir/article-1-2124-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Barghamadi, Leyla and NorouzianAlam, Shahab and Sedighy, Seyed Hassan and Ghafary, Bij}, title = {Effect of 60Co γ-irradiation at very low dose rate on n-GaN UV photodetector for space applications}, abstract ={GaN MSM UV photodetector were fabricated on n-GaN epitaxial layer. The effect of room temperature 60Co γ-radiation at very low dose rate (0.0001 rad(Si)/s) on the electric current of photodetector was studied. In contrast to earlier observations, by increasing the gamma dose, an initial increasing of the dark current followed by the gradual decrease has been observed. The abnormal behavior of the voltage-current characteristic of the photodetector can be explained by considering the carriers transfer mechanism in localized states, which is very common in III-Nitride semiconductors. The results presented here are found to be important in understanding the mechanism of interaction of  60Co γ-irradiation with n-GaN epilayer.}, Keywords = {photodetector, GaN, gamma, dark current.}, volume = {26}, Number = {0}, pages = {585-588}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2125-en.html}, eprint = {http://opsi.ir/article-1-2125-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Jafarfard, Mohammad reza and Geramifard, Nahi}, title = {Derivation of the refractive index profile of optical fibers from the phase image using inverse Radon transformation}, abstract ={We present a computational method for the extraction of refractive index profile of an optical fiber using measurement of fiber phase image. In this method the refractive index profile of fiber will be obtained by the filtered back projection algorithm that apply Radon transformation on the phase image matrix. The phase information of a single mode fiber was obtained by the diffraction phase microscopy. Then the refractive index profile of this fiber was extracted using the inverse Radon transformation. The measured profile is well agreed with index profile of the preform, which had been designed by a preform analyzer before the fiber being fabricated from the preform.}, Keywords = {Interference microscopy, Phase measurement, optical fiber}, volume = {26}, Number = {0}, pages = {589-592}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2126-en.html}, eprint = {http://opsi.ir/article-1-2126-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Rashedi, Alireza and Sarreshtedari, Farrokh and Sabooni, Mahmood and Babaei, Bahar}, title = {Implementation of the ECDL locking to Cesium transition line using dichroic atomic vapor laser lock}, abstract ={Here, we have investigated the locking of the extended cavity diode laser (ECDL) to an atomic transition line of the Cesium. The implementation of the Dichroic Atomic Vapor Laser Lock (DAVLL) is explained and the obtained results are discussed. In this regard, at first, the considered atomic transition should be obtained by precise adjustment of the laser system. Then by applying the external magnetic field, and using the difference between the absorption profiles of the right and left circularly polarized light, the error signal of the locking process would be obtained. We have compered the obtained results of the Cesium D1 line absorption spectroscopy with other works and the results of the successful DAVLL locking is presented.}, Keywords = {Extended Cavity Diode Laser, Laser Locking, Dichroic Atomic Vapor Laser Lock}, volume = {26}, Number = {0}, pages = {593-596}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2127-en.html}, eprint = {http://opsi.ir/article-1-2127-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Jabbary, Samin and Golmohammadiheris, Saee}, title = {Optimization of alternating metal structures for light trapping in solarcells}, abstract ={Thin-film solar cells have attracted attention because of their flexibility and low consumption of semiconductor material. One of the major drawbacks of thin-film solar cells is their low absorption due to the light passing through the thin layer structure. The use of nanostructures on the surface of solar cells is one of the important tools for increasing the amount of light absorption via light confinement. In this paper, we optimize two structures to enhance light confinement through absorption bandwidth. The first structure contains a thin layer of AZO on a silicon substrate with TiO2 spheres embedded in it with honeycomb arrangement. The second structure has a semicircular layer of hollow cavities with AZO and TiO2 material with honeycomb arrays placed on the Si substrate. We achieved 39%, 28%, and 45% enhancement in photocurrent optimization, in 100nm, 300nm a-Si and 1.5µm c-Si layers, respectively.}, Keywords = {metal nanoparticles, patterned structures, solar cell, silicon}, volume = {26}, Number = {0}, pages = {597-600}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2128-en.html}, eprint = {http://opsi.ir/article-1-2128-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Asadollahi, Amir and Rezaei, Ali and Latifi, Hami}, title = {Design and Construction of Laser Speckle Contrast Imaging System for Monitoring Blood Flow of Brain Cortex}, abstract ={Visualizing blood flow of brain cortex is very important in many studies especially during neurosurgery operations. In this study, we designed and constructed a Laser Speckle Contrast Imaging (LSCI) system for monitoring blood flow. This system is a simple, low cost and wide-field method that does not require sample scanning. A low power laser and a microscope with a camera mounted on that was used. Obtained results show the ability of this system for use in real time monitoring of blood flow during neurosurgery and functional tests. Blood veins as small as 10 µm at field of view (FOV) of about 10*10 mm2 was recorded. Image acquisition speed was 30 fps.}, Keywords = {Brain Cortex, Laser Speckle Contrast Imaging, Speckle Contrast}, volume = {26}, Number = {0}, pages = {601-604}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2129-en.html}, eprint = {http://opsi.ir/article-1-2129-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Asadollahi, Amir and Rezaei, Ali and Latifi, Hami}, title = {Design and Construction of Photoacoustic Microscopy System for 3D Imaging of Brain}, abstract ={3D Imaging of brain is important in many aspects such as studying structure and hemodynamics in cognitive science. In this study, we designed and constructed a 3D Photoacoustic imaging system called Acoustic-Resolution Photoacoustic Microscopy (AR-PAM). Advantages of the Photoacoustic imaging are high contrast and depth of imaging with acceptable resolution which was impossible before by existing imaging modalities. In this imaging system we used a nanosecond pulsed Nd:YAG laser for illumination of the sample and an ultrasonic transducer for Photoacoustic (PA) waves detection. Tests were done on an exposed cortex of rat brain. Imaging results show that resolution of the system is less than 50um at the depth of about 3 mm.}, Keywords = {Photoacoustic (PA) wave, Acoustic-Resolution Photoacoustic Microscopy (AR-PAM), Nanosecond Pulsed Laser, Ultrasonic Transducer}, volume = {26}, Number = {0}, pages = {605-608}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2130-en.html}, eprint = {http://opsi.ir/article-1-2130-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Khanpour, Mohammad Amin and BaradaranGhasemi, Amir hossei}, title = {Forward and Backward Scattering Efficiency of Invisibility Cloak}, abstract ={Invisibility Cloak manage to hide the object from the observer by matching the transient and incident wave phases and by decreasing the amount of scattering from the interaction between incident wave and object.   By separating total efficiency into the forward and backward scattering Efficiencies in an invisibility cloak, we study the effects of incident wave frequency, Cloak Thickness and attenuation coefficient on both these efficiencies. The cloak is simulated by dispersive Finite-difference Time-Domain (FDTD) method based on transformation optics. Results show that forward and backward scattering efficiencies have different responses toward these changes compared to total efficiency of the cloak which is usually studied in scientific papers. For example, although the forward scattering efficiency decreases sharply by increasing the attenuation coefficient in the cloak, it has little effect on the backward scattering efficiency. Moreover, the maximum of total efficiency and the maximum of forward and backward scattering efficiencies do not occur at the same incident wave frequency. Likewise by increasing thickness of the cloak, forward scattering efficiency shows an oscillating behavior.}, Keywords = {Electromagnetic Metamaterials, invisibility Cloak, FDTD simulation, Transformation Optics}, volume = {26}, Number = {0}, pages = {609-612}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2131-en.html}, eprint = {http://opsi.ir/article-1-2131-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Lotfiani, Ahmad and Mohseniarmaki, S. Majid and Ghanaatshoar, Maji}, title = {Kretschmann SPR Biosensor with electrical response Based on the Integrated TCO-I-M Hot-Electron Photodetector}, abstract ={We propose a miniaturized surface plasmon biosensor with electrical response with no need to the external optical spectrometer. The proposed sensor consists of a TCO-I-M junction, deposited on a prism and coupled to a planar waveguide. We show that the output open circuit voltage can be utilized to inspect the surface plamon resonance and the analyte refractive index. We use transfer matrix method and electron transport equation in the metal to obtain the optical and electrical response of the proposed structure. The electrical sensitivity of our introduced sensor is estimated to be  V/RIU.}, Keywords = {Surface Plasmon Resonance, Biosensor, Hot-Electron}, volume = {26}, Number = {0}, pages = {613-616}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2132-en.html}, eprint = {http://opsi.ir/article-1-2132-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Abbasi, Shabnam and Jafarfard, Mohammad reza and Razzaghi, Davoud and Montazerolghaem, Mohsen and Pazokian, Hedieh}, title = {Characterization of laser backwriting process with different number of pulses and various laser fluences}, abstract ={In this paper laser backwriting process was investigated. The steel target was ablated onto the quartz substrate by pulsed Nd:YAG laser irradiation. microchannels  formed following interaction of the ablated particles with the substrate, were studied. The results show that the depth of the channels depends on the number of pulses and the laser fluences. In addition at a threshold fluence and number of pulses the surface plasmons were formed. UV-Visible spectroscopy and the surface profilometery were used for the investigation of the absorption and ion penetration rates in to the substrate, respectively.}, Keywords = {Quartz, Laser backwriting process, Nd:YAG pulsed laser}, volume = {26}, Number = {0}, pages = {617-620}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2134-en.html}, eprint = {http://opsi.ir/article-1-2134-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Akbarpour, Zahra and Ahmadi, Vahid and ArabpourRoghabadi, Farzaneh}, title = {Fabrication of refractive index fiber optic sensor based on MSM Mach-Zehnder structure (With intensity analysis approach)}, abstract ={In this work, a refractive index (RI) sensor based on a Multimode–Single-mode–Multimode (MSM) fiber structure is fabricated. Due to the core mismatch of the two types of fibers, the sensor becomes sensitive to the RI of the outer media. The performance of the sensor is characterized inside water-glycerol solutions with different RIs. The maximum sensitivity of the sensor in the RI range of 1.44-1.475 is at the wavelength of 1400nm and equals to -18.144 RIU-1.  Facile fabrication and low cost are two of the main advantages of the fabricated sensor.}, Keywords = {Refractive index sensor, MSM, Mach-Zehnder, Single-mode fiber, Multimode fiber}, volume = {26}, Number = {0}, pages = {621-624}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2135-en.html}, eprint = {http://opsi.ir/article-1-2135-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Gerami, Saeid and Moravvejfarshi, Mohammad kazem}, title = {Refractive index sensor based on U-shaped optical fiber}, abstract ={We have chemically etched and bent a 30-mm long section of a single mode fiber in a U-shape, to fabricate a refractive index sensor. Then, we immersed this section into solutions of different refractive indices. To characterize the sensor, we have measured the change in power transmission, while changing the liquid refractive index in the range of 1.428-1.474. The experimental results show that the sensor sensitivity varies from −34.32 dBm/RIU for the refractive indices of 1.428-1.460 to −298.04 dBm/RIU for the refractive indices of 1.460-1.474.  }, Keywords = {Fibre optic sensor, Refractive index sensor, Sensitivity}, volume = {26}, Number = {0}, pages = {625-628}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2136-en.html}, eprint = {http://opsi.ir/article-1-2136-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Nasr-Esfahany, Maryam and NorouzianAlam, Shahab and Ghafary, Bij}, title = {Optimization of UV photodetectors, utilising SiO2 nano-particles}, abstract ={In this work, SiO2 nanoparticles have been used in to modify the surface structure, in order to optimize the functionality of the ZnO based MSM UV photodetectors. The diameter of SiO2 nanoparticles were are 20-30 nanometers and deposited on ZnO thin film using scooping transfer technique. For characterization of the samples UV-Vis spectroscopy and SEM were used. the results indicated that the absorption and efficiency of optical UV sensor increases. These results can be very useful for design and utilization of industrial photodetectors.}, Keywords = {Nanoparticles, Optical Absorption, Silicon Oxide, UV Photodetector, Zinc Oxide,}, volume = {26}, Number = {0}, pages = {629-632}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2138-en.html}, eprint = {http://opsi.ir/article-1-2138-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Zolfi, Fereshteh and Darudi, Ahmad and Soltani, Peym}, title = {Determination of percentage in a mixed blended of beef, lamb and fat using analyzing the data cube of hyperspectral imager}, abstract ={Hyperspectral imager is a non-destructive determination method that uses food applications that are used in the quality evaluation of food products. In this paper we investigate a method to recognize meat types and measuring amount of fat in processed meat. Since the types of meat have their own unique spectrum, using support vector machin (SVM) to the percentage of each types of meat are estimated and its experimental results are presented in this paper.}, Keywords = {hyperspectral imaging, meat, classification, SVM.}, volume = {26}, Number = {0}, pages = {633-636}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2139-en.html}, eprint = {http://opsi.ir/article-1-2139-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Riahi, Mohamad sadegh and Tajaldini, Mehdi}, title = {Separation Threshold of Copper Nanoparticles In Laser Ablation Process by 10.6 Micrometer CO2 Laser}, abstract ={In this paper; the threshold of laser ablation process has been experimented by radiation of CO2 laser on different metals such as Cu, Fe, and Zn with 1×1 Cm2 of areas. Laser pulses are radiated from 3 and 5 Cm. Particle separation from Cu surface show the process threshold is just belong to Cu. XRD analysis recognizes that created material phase is Cu2O. Furthermore, SEM figures well show the separation threshold of Cu2O particles from copper surface. The result illustrate that ablation by 10.6µm CO2 laser starts on Cu surface.   }, Keywords = {copper, cu2o, laser ablation, threshold, nanoparticle}, volume = {26}, Number = {0}, pages = {637-640}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2140-en.html}, eprint = {http://opsi.ir/article-1-2140-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Kafian, Hosein and Abbasian, Vahid and AkbariBirgani, Shiva and Moradi, Ali-Reza and Abdollahpour, Daryoush}, title = {Resolution enhancement of light-sheet fluorescence microscopy using a microsphere}, abstract ={Light-sheet fluorescence microscopy (LSFM) is a powerful method 3D imaging of biological samples with the minimal photodamage, and high imaging speeds. However, achieving high lateral resolution for single cell imaging applications is a challenging issue for the method. Here, we demonstrate that using a transparent microsphere (250 µm diameter) in the imaging system, leads to 3.2x increase of the magnification, and an enhanced resolution.  The capability of the approach is verified single-cell imaging of breast cancer cell line MCF7, and the results are compared with conventional LSFM images without the microsphere. Our proposed arrangement can be considered as an inexpensive and simple  alternative for using high-NA objectives in LSFM.}, Keywords = {3D, Light-Sheet Fluorescence Microscopy, microsphere-assisted microscopy, Super-Resolutio}, volume = {26}, Number = {0}, pages = {641-644}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2141-en.html}, eprint = {http://opsi.ir/article-1-2141-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Hassanzadeh, Moazameh and Amirabadizadeh, Ahmad and Ranjbaraskari, Hasan and Marashi, Seyed Mohamad Bagher}, title = {Investigation of the influence of Excimer laser radiation in Magnetoimpedance of Co68.5Fe4Si16.5B11 Cobalt base magnetic ribbons}, abstract ={In this study, Cobalt base magnetic ribbons were prepared by melt spinning in water.  The Excimer laser beam with   308 nm and 125 watts irradiated for 60 seconds, the slots were parallel to each other 0.3 mm apart in one, three, five and seven grooves. The Vibration Sample Magnetometer (VSM) curve was used to investigate the magnetic properties of the ribbons. As the number of grooves increases, the magnetism of the specimens decreases. The magnetoimpedance of the specimens was measured. As the number of grooves increases, the sample magnetoimpedance increases. The highest magnetoimpedance in the sample has seven grooves. Laser light irradiation has resulted in transverse anisotropy in the samples, thus magnetic susceptibility was increased. As a result, we can produce high sensitivity sensors by laser irradiation.}, Keywords = {Cobalt base magnetic ribbon, Hysteresis loop, Laser Excimer, Magnetoimpedance,}, volume = {26}, Number = {0}, pages = {645-648}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2145-en.html}, eprint = {http://opsi.ir/article-1-2145-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Azarm, Mohamadjavad and Keshavarz, Alirez}, title = {linear and Nonlinear Optical properties of Au and Ag with Gamma radiation}, abstract ={Considering the effects of low dose Gamma radiation on nanoparticles in this paper gold and silver with 0.05 and 0.005 concentration have been synthesized in two ways, chemical reduction and  radiation of gamma source Co-60 with total dose 4.79 (mGy). And then Optical properties are obtained by using Visible Spectroscopy for linear characterization. for gold absorption peak is around 530(nm) and silver peaks around 400(nm) and surely red-shift was seen for nanoparticles which prepared with Gamma. Also we use z-scan for nonlinear refractive and absorption index that shows the sign and order of indexes for absorption index is in order of  (cm/W)and for refractive index is in order of  ( /W).The results indicate better performance in chemical and optical features of nanoparticles with low dose Gamma radiation.}, Keywords = {Gold and Silver nanoparticles, Gamma radiation, z-scan}, volume = {26}, Number = {0}, pages = {649-652}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2146-en.html}, eprint = {http://opsi.ir/article-1-2146-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Parishani, Marziyeh and Malekfar, Rasoul}, title = {Investigation of effect of surfactant on optical characterization of WO3 nanostructures}, abstract ={In this study, we prepared tungsten oxide nanostructures in a simple and low-cost hydrothermal method and considered a change in the characterization of the samples by adding polyethylene glycol surfactant. We performed X-ray diffraction pattern characterization, UV-Visible absorption spectroscopy, and scanning electron microscopy imaging, and with respect to the observed changes, the sample prepared with surfactant could be used in photocatalytic applications.}, Keywords = {Tungsten oxide, Polyethylene glycol, Photocatalyst}, volume = {26}, Number = {0}, pages = {653-656}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2147-en.html}, eprint = {http://opsi.ir/article-1-2147-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Azizi, Saeed and Ghandi-Monfared, Mohammad and Aminoroaya, Neda and Sarabi, Hassan and Arandian, Alireza and Latifi, Hami}, title = {Design and Implementation of a Digital Scanning Laser Light-Sheet Microscope for Fluorescence Imaging of Biological Samples}, abstract ={Recently, utilizing and development of light-sheet microscopy, as a new type of fluorescence imaging technique, have been noticed by vast number of researchers in biology and optics. Special advantages of this technique include ability of fast imaging, low rates of photo-bleaching and photo-toxicity and, capability of in-depth imaging of live samples like small embryos. In this work, we designed and implemented a light-sheet microscope. The light sheet was generated using a fast scanning beam of laser from one side of a sample. This mechanism facilitates exact control of the sheet quality and its uniformity. Axial and lateral resolutions of 30µm and 1µm using a laser pump of 532nm were achieved, respectively. The light-sheet height could be controlled using a laser scanner. Then, we used the microscope to test the quality of the imaging system in case of living zebra-fish embryos.}, Keywords = {Fluorescence bio-imaging, Laser scanning, Light-sheet microscopy, Optical sectioning}, volume = {26}, Number = {0}, pages = {657-660}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2148-en.html}, eprint = {http://opsi.ir/article-1-2148-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Mirzaei, Fatemeh and Baedi, Javad and Koushki, Ehsan and Ghasedi, Arm}, title = {Measuring the concentration of blood Glucose by change the light absorbance of surface Plasmon\'s resonance in noble metallic nanoparticles}, abstract ={In this paper, we have gained method for determination of blood glucose using change the light absorbance of surface Plasmon's resonance. In this way managed to make gold nanoparticles with Size 10-13 nm that by measuring DLS and UV spectrometer was approved. We can measuring Glucose in saliva by combining gold nanoparticles and glucose and Glucose oxidase with suitable ratio.  Data in this way compared to existing methods of measurement has many advantages.  It is carried by spectrometer light and need to contact the skin. We were able to measure the concentrations of 100-120 mg/dl well.}, Keywords = {Blood Glucose, Glucose oxidase, Light absorbance, Surface Plasmon's resonance, Au nanoparticles}, volume = {26}, Number = {0}, pages = {661-664}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2149-en.html}, eprint = {http://opsi.ir/article-1-2149-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Jalili, Bahram and Ghoreyshi, Seyed mohammad bagher}, title = {Optical design and fabrication of MoO3 / Ag / D nano conductive transparent electrodes for use in optoelectronic devices}, abstract ={In this study, we first design and simulate transparent nanostructured electrodes MoO3 / Ag / V2O5, MoO3 / Ag / WO3, MoO3 / Ag / ZnS with optimum Thickness, 39.3 / 21.7 / 22.8, 39.9 / 21.4 / 22 ,42.4 / 20.7 / 21, respectively. The nanometers were studied to achieve high transparency and low sheet resistance and then these structures were deposited on glass substrates by thermal evaporation. In this paper, the effect of parameters such as layer rate, layer thickness, substrate temperature, on structural, optical and electrical properties of these multilayer nanostructures was investigated. The optical transducers for each structure, especially at 550 nm, were 65.8,55.1 and 66.9%, respectively, and the sheet resistance of the electrodes was 8.38 /4.26/ 4.38 (Ω / □), respectively.}, Keywords = {Nanostructure Transparent conductive electrode, Optical transducer, Competency factor ,Surface resistivity.}, volume = {26}, Number = {0}, pages = {665-668}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2150-en.html}, eprint = {http://opsi.ir/article-1-2150-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Karimi, Mohammad and Aghayari, Ebrahim and Kamkar, Ahmad and Vatani, Vahid and Nabavi, Seyed hass}, title = {Investigation of Phase Modulation for SBS Threshold Enhancement in Single Frequency High-Power Amplifiers}, abstract ={In this paper we report the effect of phase modulation on increasing the threshold of non-linear Brillouin Scattering effect in fiber amplifiers. We theoretically and experimentally show that, applying phase modulation generates numerous new side-bands around the central frequency. This technique results in immense enhancement on SBS threshold. The effect of frequency and amplitude variation on SBS threshold is investigated. We obtain 280 W output power by optimizing the frequency to 60 MHz and the amplitude to 30 dBm, in a 3-stage fiber amplifier with narrow line-width.}, Keywords = {Fiber Amplifier, Phase Modulation, Single Frequency Amplifier, Stimulated Brillouin Scattering.}, volume = {26}, Number = {0}, pages = {669-672}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2151-en.html}, eprint = {http://opsi.ir/article-1-2151-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Sanati, Abolfazl and Jafari, Behnam and Soofi, Hadi}, title = {Multiband Electro Optic modulator Based on Graphene in the Mid-IR wavelength range}, abstract ={In this article a multiband optical modulator based on single layer graphene in the mid-IR wavelength range is designed and simulated. In this modulator metallic nano antennas are utilized to enhance absorption and modulator characteristics. Most of the graphene based electro-optic modulators function according to the modification of absorption with electrostatic doping through gate electrode. Such modulators often require high voltage and have low responsivity for lower voltages due to the low absorption of single layer graphene. In this article, an electro-optic modulator based on graphene is designed at which the modulation principle is Fabry-Perot interference between counter propagating graphene plasmon waves in a metal-dielectric-graphene-metal structure and reaches a modulation depth of nearly 100% with a very small applied voltage. For wavelengths of 6 and 7.5um, modulation depth of 70 and 85 % are obtained. For these wavelengths insertion loss is 0.8 and 2.21 dB respectively. In this modulator, graphene is employed for absorption, but instead to shift the resonance wavelength of the Fabry-Perot structure. In this article, the reflected wave is considered as the modulated signal.}, Keywords = {Electro-optic modulators, Fabry-Perot interferometer, Graphene, Mid-IR, Plasmonic.}, volume = {26}, Number = {0}, pages = {673-676}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2152-en.html}, eprint = {http://opsi.ir/article-1-2152-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Mohammadi, Shakila and Zare, Hakimeh and Pourghobadi, Zeinab and Panjehpour, Mojtaba and Ostovari, Fatemeh}, title = {A simple method to synthesize water soluble CdSe and Gd: CdSe QDs}, abstract ={This paper reports the A simple and economical method to synthesize water soluble CdSe and CdSe: Gd QDs. The structural, luminescence and optical properties of these QDs were investigated by X-ray diffraction, Energy dispersive X-ray, optical absorption and photoluminescence spectroscopy measurements. XRD confirmed that CdSe and CdSe: Gd QDs had a cubic structure with good crystallinity. EDX analysis confirms the presence of Gd3+ in quantum dots. The as-prepared QDs exhibit good fluorescence properties. The presence of gadolinium ions in the crystal structure of quantum dots decrease the fluorescence Intensity of the quantum dots. But it can still be used in bio-imaging.}, Keywords = {CdSe, quantum dots, gadolinium, photoluminescence, optical property.}, volume = {26}, Number = {0}, pages = {677-680}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2153-en.html}, eprint = {http://opsi.ir/article-1-2153-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Masoumidehaghi, Zahra and Ranjbar, Mehdi and Torabigodarzi, Mehdi}, title = {Investigation of optical gasochromic properties of deposited MoO3 thin films on the textile substrate for Hydrogen gas sensing}, abstract ={In this study, molybdenum oxide (MoO3) thin films are fabricated by RF sputtering on polyester textile substrate, and its optical coloration properties are investigated under hydrogen gas exposure. The color change of formed layers is detected by a color sensor and the response of the sensors is determined to different concentrations of hydrogen gas. Phase structure, morphology and optical properties of fabricated layers are investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV-Vis spectroscopy analysis, respectively.}, Keywords = {MoO3, polyester textile, RF sputtering, color sensor}, volume = {26}, Number = {0}, pages = {681-684}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2154-en.html}, eprint = {http://opsi.ir/article-1-2154-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Ashkbous, Elahe and Ghasemian, Ebrahim and Tavassoly, Mohammad kazem}, title = {The Effect of Transition Frequency Modulation in the Presence of Spin-Orbit Coupling and Atomic and Field dissipations on Jaynes-Cummings Model}, abstract ={The system under study consists of a two-level atom which interacts with two (internal) quantized and (external) classical fields in an optical cavity. The coupling between atomic pseudo-spin states and its external center-of-mass motion modifies the Jaynes-Cummings (JC) model and also can help to enlarge the  regime. The increasing of ground state excitation number ( ) is different for various critical values of spin-orbit coupling strength in JC and SOC models. The critical values of coupling intensities change by considering the effect of transition frequency modulation, spontaneous emission of the atom and photon leakage in both the JC and SOC models. Also, the SOC model reaches (gets closer) to JC model by increasing the dissipation coefficient and amplitude of modulation.}, Keywords = {Dissipation, Frequency Modulation, Jaynes-Cummings Model, Spin-Orbit Coupling.}, volume = {26}, Number = {0}, pages = {685-688}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2156-en.html}, eprint = {http://opsi.ir/article-1-2156-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Navid, Ali}, title = {Generation of Single Gaussian Attosecond Pulses of Desired Time Durations}, abstract ={In this paper, we present a new and interesting method for the generation of single attosecond pulses in a femtosecond laser interaction by the hydrogen atom. By minimization of the duration and bandwidth product of the emitted field form the atom, single Gaussian attosecond pulses are achieved. Then, by some modifications, we extend our method to the generation of Gaussian attosecond pulses of desired time durations and bandwidths. Finally, we study the mode-locking properties of the generated pulses.  }, Keywords = {Gaussian wave envelope, attoseond pulses, High harmonic generation, mode locking}, volume = {26}, Number = {0}, pages = {689-692}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2157-en.html}, eprint = {http://opsi.ir/article-1-2157-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {HamdiMohammadabad, Parvin and Tohidi, Tavakkol and Talebzadeh, Robabeh}, title = {Preparation of TeO2 thin film by simple thermal evaporation of Te powder}, abstract ={In this work TeO2 thin films were prepared on glass substrates by thermal evaporating of Te powder in muffle furnace at three evaporation temperature. The distance between substrate and Te powder was 2 mm. The crystal structure and morphology of thin films were investigated with XRD and AFM methods, respectively. The layers have a tetragonal structure and a uniform surface. Also, optical properties including absorption and bandgap were measured. An increase in the absorption and band gap value was observed with increasing evaporation temperature.  }, Keywords = {TeO2, Thin film, optical properties, Thermal evaporation.}, volume = {26}, Number = {0}, pages = {693-696}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2158-en.html}, eprint = {http://opsi.ir/article-1-2158-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {SetodehKheirabady, Meysam and Rafeie, Mehran and Tavassoly, Mohammad kazem}, title = {The Influence of atom-field nonlinear coupling on the two- qubit entanglement: Intensity-dependent time evolution operator approach}, abstract ={In this paper we study the dynamics of entanglement between two qubits (two-level atoms) when the atom–field interaction is intensity-dependent, At first we determine the model and its Hamiltonian, then, using the interaction picture of the Hamiltonian, the intensity-dependent time evolution Hamiltonian operator is obtained in the basis of two qubits. Using this operator, density operator evolution is achieved. With the help of the reduced density matrix, we evaluate the concurrence measure of the two-qubits. At last, by numerical analysis, the influence of intensity-dependent coupling is investigated and compared with linear regime (constant coupling). We observe that in the case of nonlinear coupling, comparing with constant coupling, preservation of entanglement can be achieved.}, Keywords = {Concurrence, Entanglement, intensity dependent atom-field coupling}, volume = {26}, Number = {0}, pages = {697-700}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2160-en.html}, eprint = {http://opsi.ir/article-1-2160-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {AghababaeiNejad, Mahboobeh and Farahbod, Amir Hossein and Soltanolkotabi, Mahmoo}, title = {The effect of the detection angle on Polarization-Resolved Laser-Induced Breakdown Spectroscopy of Al alloy}, abstract ={In this research, the effect of the detection angle on polarization-resolved laser-induced breakdown spectroscopy (PRLIBS) of Al alloy has been studied. The analysis revealed that there is no significant difference between the polarization degree of the continuum and discrete emission for all detection angles under-investigated. Also, no improvement in signal to background ratio (SBR) was found in PRLIBS compared to the laser-induced breakdown spectroscopy (LIBS).}, Keywords = {Polarization Resolved Laser induced Breakdown Spectroscopy, Laser Induced Breakdown Spectroscopy, Polarization, Signal to Background Emission.}, volume = {26}, Number = {0}, pages = {701-704}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2161-en.html}, eprint = {http://opsi.ir/article-1-2161-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Raji, Samane and Haddad, Mohammad ali and Afshar, Maryam}, title = {The estimation of glucose and triglyceride concentration in blood serum by Z_scan technique}, abstract ={Precise measurement of blood components such as glucoses, triglyceride, calcium and etc. is known as an important step for medical diagnostics. Currently, colorimetric methods are used to achieve this goal at blood laboratories with some limitations for high concentration blood components.  Nonlinear optical properties of blood serum containing these components lead to estimate the concentration of components. In this paper, it is shown that using z-scan technique is a promising method for measuring glucose and triglyceride by studying nonlinear refractive index of blood serum.}, Keywords = {Nonlinear refractive index, Nonlinear optic, Z-scan method, Glucose, Triglyceride}, volume = {26}, Number = {0}, pages = {705-708}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2162-en.html}, eprint = {http://opsi.ir/article-1-2162-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Shafipour, Fereshteh and SalmaniShik, Somaye and MajlesAra, Mohammad Hossei}, title = {Investigation of changes of third-order nonlinear refractive index of QYPDLC-142 liquid crystal doped with single-wall carbon nanotube at different concentrations}, abstract ={In this paper ,QYPDLC-142  Nematic Liquid Crystal (NLC)  doped with different percentages of 1%, 2%, 3%, of Single-Wall Carbon Nanotube(SWCNT) was prepared. The third order nonlinear refractive index of cells  prepared by different percentages was investigated using close z-scan technique. The laser used in this study was the Nd:YAG laser  at 532 nm and power 5  mw. The results indicate that addition of a single-wall carbon nanotube significantly increases the nonlinear refractive index of the nematic liquid crystal QYPDLC-142. For the doped liquid crystal cell with 1% of carbon nanotube obtained the highest refractive index than other concentrations.}, Keywords = {Composite materials, Close z-scan technique , Nematic liquid crystal, Nonlinear optics, Single-wall Carbon nanotubes}, volume = {26}, Number = {0}, pages = {709-712}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2163-en.html}, eprint = {http://opsi.ir/article-1-2163-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {KarimiTar, Hedieh and Ghasemi, Purya and Hosseini, Mohammad and Arefnia, Fatemeh and Hosseini, Seyedeh Mahshad and Zibaii, Mohammad Ismail and Dargahi, Leil}, title = {Design and Fabrication a Wireless Implantable LED Illumination System for Optogenetic Applications}, abstract ={Optogenetics as a new tools in neuroscience provides an effective way of manipulating a specific cell type by light stimulating microbial opsin expressed cells on a timescale of milliseconds. Typically, light delivery into targeting areas is achieved using optical fibers coupled to external laser diodes or light emitting diodes (LEDs). Also, those laser diodes require high electrical power, which is an obstacle to achieve wireless operation of implanted device. In this article, we report development of an implantable wireless optogenetic device with a radio-frequency (RF) power source and controller, this implant produces sufficient light (473 nm) power for optogenetic stimulation. The RF frequency of 480 kHz can accommodate transmission distance up to 30 cm between the RF generator and the receiver loop antenna. This technology opens the door for optogenetic experiments in which animals are able to behave naturally with optogenetic manipulation.}, Keywords = {Implantable LED, RF frequency, Neuroscience, Optical stimulation, Optogenetic, Wireless system.}, volume = {26}, Number = {0}, pages = {713-716}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2164-en.html}, eprint = {http://opsi.ir/article-1-2164-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Usefzaei, Tahereh and RashidiHuyeh, Majid and Jabiri, Rez}, title = {Optical properties of the lustre glaze produced on copper shield}, abstract ={Zarinfam is a specific glaze with metallic reflection. Its color and optical properties are due to two optical phenomena of light interference and Surface Plasmon Resonance (SPR) related to noble metal nanoparticles in the Zarinfam layer. In this communication, the optical properties of lustre glaze produced on the copper shield were studied. For this, first, the reflectance spectra of samples were measured in the visible domain. Then, a model was developed, thanks to FESEM images. Using this model, different sample parameters, spatially the glass thickness and silver volume fraction in the samples were evaluated. The results showed that the glass thickness varies from ۳۰ to 90 nanometer and the silver volume fraction is in 0.01 per cent of order.}, Keywords = {Lustre glaze, noble metal nanoparticles, Surface Plasmon Resonance}, volume = {26}, Number = {0}, pages = {717-720}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2165-en.html}, eprint = {http://opsi.ir/article-1-2165-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Saadatmand, Seyyedeh bita and HajiNajafiChemerkooh, Mohammad javad and Ahmadi, Vahid and Hamidi, Seyyedeh Mehri and Arabpour, Farzaneh}, title = {Performance Improvement of Surface Plasmon Resonance Biosensor Using Graphene layer}, abstract ={In this paper, surface plasmon resonance biosensor consisting of functionalized gold surface by graphene and microfluidic channel is fabricated. Graphene is synthesized by chemical vapor deposition method and transferred to the gold substrate using polymer. The results obtained from the Kretschmann configuration show that the biosensor based on graphene functionalized gold is more sensitive than the bare one in biomolecules adsorption.}, Keywords = {Biosensor, Graphene, Kretschmann configuration, Surface plasmon resonance}, volume = {26}, Number = {0}, pages = {721-724}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2166-en.html}, eprint = {http://opsi.ir/article-1-2166-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Siahvashi, Naser and Hamdami, Moslem and Arabanian, Atoosa sadat and Massudi, Rez}, title = {The effect of beams distribution in the near field on the intensity distribution and power in the bucket in the far field in laser beams combination}, abstract ={Achieving a high power and high quality beam is the most important purpose of laser beam combination. The geometrical arrangement and the beam distribution in array aperture have effective role in beam combination quality. By applying the beams in the side-by-side arrangements of a single line, two parallel lines, three parallel lines, and six parallel lines in array aperture, and with 2.5 km distance of observing plane, the effect of the beam distribution at array aperture in coherent and incoherent combination  has been examined. For this purpose, the distribution of near and far field intensities for two modes is presented. Also by presenting the power in the bucket diagram, the amount of power localized at the center of the far-field observing plane for all arrangements is investigated. The results show that for a constant beam waist and constant distance between beams in array aperture, the amount of power in the bucket increases more than two order of magnitude, and the intensity distribution width of central peak decreases more than one order by changing the beam distribution to the square arrangement. Finally, the results show that the profile of the combined beam has the same symmetry as the beams are arranged in the array aperture.}, Keywords = {Geometrical array, coherent and incoherent beam combining, power in bucket. Intensity distribution, array aperture}, volume = {26}, Number = {0}, pages = {725-728}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2167-en.html}, eprint = {http://opsi.ir/article-1-2167-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Parsanasab, Gholam mohammad and Taghavi, Majid and Mostajeran, Samaneh}, title = {spin-coated deposition of Chalcogenide for Lithography}, abstract ={In this study, we first investigated the feasibility of a solution made of different types of chalcogenide powders and concluded that only amorphous chalcogenides could provide a suitable solution for spin-coated deposition. After repeating the experiments, we found that when we heat them in order to remove the solvent from the deposited films, this must be done under vacuum. Then, by direct laser writing with a continuous green laser at 100um /s at 3mw power on the films and chemically etching them, we achieved 2um optical waveguides.}, Keywords = {Soluble material method, spin-coated deposition, Optical Waveguide, Chalcogenide photoresists}, volume = {26}, Number = {0}, pages = {729-732}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2168-en.html}, eprint = {http://opsi.ir/article-1-2168-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Rashidifar, Mahsa and Darbari, Sara and Abdi, Yaser}, title = {Fabrication and characterization of MoS2 sheets for application in photodetector}, abstract ={Electrical and optical properties of Transition Metal Dichalcogenide (TMD)s are just a few among the many extraordinary properties of the TMDs which led to the huge research and interest on this topic. In this paper MoS2 is used for fabrication of a photodetector. to Achieve this goal, the MoS2 sheets are synthesized on SiO2/Si substrate using Chemical Vapor Deposition (CVD) and then the synthesized sheet is transferred subsequently on the prepared nickel electrodes.This structure is utilized for photodetection of green light.Then, to enhance the photodetection efficiency, we have applied an external strain to the MoS2 sheets. Owing to the piezoelectric property of the MoS2 sheets, we have observed an enhancement in the output sensitivity of the strained structure.}, Keywords = {two-dimensional materials, piezoelectricity, MoS2, transfer,TMDs}, volume = {26}, Number = {0}, pages = {733-736}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2169-en.html}, eprint = {http://opsi.ir/article-1-2169-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Khalili, Reyhaneh and Ansari, Narges}, title = {Design a biosensor with the usage of Bloch surface waves in the defective photonic crystal includes monolayer MoSe2}, abstract ={Bloch surface waves supersede usual plasmonic biosensors. In this paper, the truncated one-dimensional photonic crystal (1DPC) structure includes monolayer MoSe2 as a defect layer has been investigated. The shift of the resonance wavelength and resonance angle as a result of the change in the refractive index of the biomaterial is explored by using the TMM method in the near-infrared range. The impact of the change in the spacer layer thickness was discussed in detail and imaging sensitivity has been obtained at 0.7 percent. Also, high sensitivity in this paper can be applied in the field of biological and chemical sensor applications.}, Keywords = {Bloch surface waves, Defective photonic crystal, Biosensor, Plasmonic, TMDC}, volume = {26}, Number = {0}, pages = {737-740}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2171-en.html}, eprint = {http://opsi.ir/article-1-2171-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Ghadrdan, Majid and Shahraki, Mojtab}, title = {Plasmonic switch based on a pair of vertical cavities with embedding gold square nanostructures in the cavities}, abstract ={In this paper, we propose an all-optical switch based on nonlinear metal-insulator-metal (MIM) nanoplasmonic structures. The nonlinear Kerr effect and the intrinsic nonlinear properties of gold are used to implement the plasmonic switch. Increasing the intensity of the input light causes significant nonlinear effects. By examining the transmission spectrum, the proposed structure has a minimum at 860 nm. When the light intensity increases, the resonance wavelength changes. The result showed that the proposed switch has a threshold power equal to 0.07 mW/μm2 and the transmission ratio of about 0.8.}, Keywords = {Cavity, Gold nonlinear properties, Nonlinear Kerr effect, plasmonic switch.}, volume = {26}, Number = {0}, pages = {741-744}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2173-en.html}, eprint = {http://opsi.ir/article-1-2173-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Pourpars, Parisa and Golmohammadi, Saee}, title = {Design of Tunable Metamaterial Absorber Based on Graphene in Terahertz Frequency Range}, abstract ={In this article a three dimensional metamaterial absorber in terahertz frequency range has been designed using of patterned Graphene. By using the tunability of surface conductivity in Graphene and changing the chemical potential the tunability is possible in the absorber. The simulation results shows about 95% absorption in three broad bands in λ=  ,  and λ=51 μm in the terahertz range. The structure absorber is composed of Graphene Array on top of the Gold separated by SiO2 thick dielectric layer. Finally, because of four-fold symmetry in the structure, polarization independent absorption for this structure is achieved, where proposed structure can be employed in sensors and switching systems.}, Keywords = {Absorber, Chemical Potential, Graphene , Tunable.}, volume = {26}, Number = {0}, pages = {745-748}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2174-en.html}, eprint = {http://opsi.ir/article-1-2174-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Abbaspoor, Mahbube and Aliannezhadi, Maryam and ShariatmadarTehrani, Fatemeh}, title = {Synthesis, structural and optical characterization of tungsten oxide nanoparticles grown by sol–gel method}, abstract ={In the present work, tungsten oxide nanoparticles (WO3) were synthesized using the simple and low-cost sol-gel method. The UV-Vis optical spectrometer was used to determine the absorption and transmission spectra of tungsten nanoparticles. X-ray diffraction (XRD) technique was used to investigate the crystalline structure. XRD pattern of the sample shows formation of WO3 with hexagonal structure. The crystallite size, micro strain and the specific surface area of the nanoparticles was estimated from XRD analysis. Optical bandgap and the band structure of the sample were evaluated from UV-Vis spectroscopy.}, Keywords = {Nanostructure, Optical properties, Sol-gel synthesis, Tungsten oxide.}, volume = {26}, Number = {0}, pages = {749-752}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2175-en.html}, eprint = {http://opsi.ir/article-1-2175-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Azizian-Kalandaragh, Yashar and Farazin, Javid and Pirgholi-Givi, Gholamrez}, title = {Preparation of CdS/ZnS-polymer nanocomposite by SILAR method}, abstract ={In this study, size-tunable CdS/ZnS- polymer nanocomposite materials were successfully prepared using SILAR method. Field Emission Scanning electron microscopy (FE-SEM), Atomic Force Microscopy (AFM) and UV-Visible absorption techniques was used for morphological, surface roughness, structural and optical properties of the prepared nanocomposite materials. The confinement of electrons and holes have observed in semiconductor nanostructured materials in lower cycles of SILAR. The results of the analysis show that with increasing the number of cycles, the nanoparticle size increase, and the absorption peak of the nanostructures shifts towards higher wavelengths and consequently the energy gap decrease. Wettability measurement of CdS/ZnS- polymer nanocomposite materials was investigated by contact angle measurement of water drop on the surface. Wettability measurement of ZnS-scotch tape nanocomposite materials was investigated by contact angle measurement of water drop on the surface, and results show that with increasing of the number of cycles, the contact angle increase and the surface wettability decrease.}, Keywords = {Wettability, optical properties, SILAR, nanocomposite materials, semiconductor.}, volume = {26}, Number = {0}, pages = {753-756}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2181-en.html}, eprint = {http://opsi.ir/article-1-2181-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Noorbakhsh, Parisa Sadat and Khadem, Hossein and Tavassoli, Seyed has}, title = {Analysis of the level of arsenic in water By surface enhanced Raman spectroscopy}, abstract ={Arsenic is one of the carcinogens with a low permissible level in water. One of the methods to detect this substance is Raman spectroscopy. Due to the weak Raman spectrum of this material, in this paper, by using reduced silver nanoparticles, produced by a simple and cost-effective method, a substrate for Surface Enhanced Raman Spectroscopy (SERS) have been fabricated for quantitative analysis of arsenic. By measuring the intensity of Raman spectrum and applying an appropriate statistical method, calibration curve for arsenic concentration is obtained. The results show the limit of detection of arsenic concentration up to ppb.}, Keywords = {"Arsenic", "Surface Enhanced Raman Spectroscopy", "Centrifuge", "Raman Spectroscopy", "Reduced Silver Nanoparticles".}, volume = {26}, Number = {0}, pages = {757-760}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2182-en.html}, eprint = {http://opsi.ir/article-1-2182-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Heidariazar, Amir and MirzabagherBarzi, Seyed Mohammad and Poozesh, Reza and Vatani, Vahid and Latifi, Hami}, title = {Design and construction of 500W fiber laser with narrow linewidth}, abstract ={In this paper a 500W all-fiber narrow linewidth laser at 1079nm is designed and constructed. Seed-amplifier setup was used for this purpose. Yb+3 doped double clad fiber was used as active medium. The optical efficiency for amplifier is 69%. Laser linewidth of oscillator and amplifier is 0.05nm and 0.09nm respectively. This paper also discusses the impact of output coupler mirror linewidth and fiber length on the SBS threshold. The spectrum and power of laser is stable and due to appropriate fiber bending the output beam is single mode.}, Keywords = {Amplifier, Oscillator, Linewidth, Stimulated Brillouin Scattering}, volume = {26}, Number = {0}, pages = {761-764}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2183-en.html}, eprint = {http://opsi.ir/article-1-2183-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Heidariazar, Amir and Lotfollahi, Morteza and Vatani, Vahi}, title = {Construction of cladding light stripper in high power fiber lasers}, abstract ={One of the main components of high power fiber lasers is cladding light stripper. This element extracts unabsorbed  pump light and leaked laser signal in cladding and causes  to laser output signal from fiber core to come out pure. In this article the fluoridric acid paste is used for corroding the surface of silica fiber at specified times and lengths. This leads to extracting cladding light. Made in laboratory sample 115W of 126W cladding light was extracted successfully.}, Keywords = {Cladding light stripper, Fluoridric acid paste, Fiber}, volume = {26}, Number = {0}, pages = {765-768}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2184-en.html}, eprint = {http://opsi.ir/article-1-2184-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Siadati, Seyed Mehdi and Mousavy, Seyedeh Soraya and Salmani, Somaieh and MajlesAra, Mohammad hossi}, title = {Growth and Investigation of Optical and Photocatalytic Properties of Pure Zinc and Nickel-Doped Zinc Nanoparticles by sol-gel method}, abstract ={In this study, ZnO and nickel doped zinc oxide nanoparticles were prepared by sol-gel method. The optical properties of these nanoparticles were studied by uv-visible spectroscopy. In this way, absorption and transmission features of ZnO were studied as a function of increasing nickel amounts. According to the results, doping zinc oxide with nickel decreases its band gap but by increasing the percentage of nickel enhances the band gap drastically. The size and morphology of the synthesized nanoparticles was evaluated by scanning electron microscopy. Photocatalytic activity of the samples was also investigated.}, Keywords = {Nickel doped ZnO, -sol-gel, UV-visible Spectroscopy, photocatalytic activity,}, volume = {26}, Number = {0}, pages = {769-772}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2185-en.html}, eprint = {http://opsi.ir/article-1-2185-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Baghdadi, Mohadeseh and Mousavy, Seyedeh Soraya and Siadati, Seyed Mehdi and MajlesAra, Mohammad Hossei}, title = {The Effect of annealing temperature and core-shell structure on the optical behavior of nickel oxide nanoparticles}, abstract ={As annealing temperature play a key role in formation of the crystalline structure of the material and consequently, the crystalline structure determines their electrical and optical behaviors. So for investigating these effects, in this article nickel oxide nanostructures were synthesized through precipitation method, and annealed at the temperatures of 350, 500, and 650 ° C Then, their structural and optical properties, including their band gap energies, and their absorption and transmission spectra studied by the use of  scanning electron microscopy and UV-visible spectroscopy, respectively. In the next step the change of optical properties of the core-shell structure of NiO@GQDs, were also investigated.}, Keywords = {Nickel oxide, Energy band gap, Annealing temperature, Graphene quantum dots}, volume = {26}, Number = {0}, pages = {773-776}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2186-en.html}, eprint = {http://opsi.ir/article-1-2186-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {KhalilpourTilami, Farid and AkbarzadehPasha, Mohamm}, title = {Synthesis, Characterization and optical property of Graphene-TiO2 hybrid}, abstract ={In this study, grapheme oxide-titanium dioxide (GO-TiO2) hybrid was prepared by sol-gel method via reaction of graphene oxide and tetrabutyl orthotitania in water and ethanol solvents. Graphene oxide (GO) sheets were first synthesized by the modified Hummers method and then three different concentrations of tetrabutyl orthotitania and a mixture of water-ethanol and graphene oxide were used to form TiO2 nanocrystals on the graphene oxide sheets. The characterization of the hybrids was performed using SEM and TEM electron microscopes, X-ray diffraction(XRD), X-ray energy dispersive spectroscopy(EDX) and infrared spectroscopy(FTIR) and the optical properties of the nanostructures were investigated using UV-Vis analysis. Microscopic and spectroscopic studies showed that a hybrid structure was formed at all concentrations studied. Titanium dioxide nanoparticles have anatase crystalline phase. The EDX analysis showed that as the concentration of titanium precursor increased, the deposition of TiO2 on graphene oxide increased. In FTIR analysis, the peak of TiO2 nanoparticles bonded with graphene oxide was observed. The UV-Vis spectra also showed an increase in the absorption wavelength and a decrease in the energy band gap of the hybrid structure compared to titanium dioxide alone.}, Keywords = {Optical Property, Titanium Dioxide, Graphene Oxide, Graphene Oxide - Titanium Dioxide Hybrid}, volume = {26}, Number = {0}, pages = {777-780}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2187-en.html}, eprint = {http://opsi.ir/article-1-2187-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Sedighi, Nafise and Haddad, Mohammad ali and Motahari, Hami}, title = {The Characterization of air-full dust of Yazd city by X-Ray Diffraction (XRD): Measurement of Crystallinity and Determination of dust Composition}, abstract ={Falling Dust is one of the most important forms of environmental pollution. Studying their physical and chemical properties is an essential method to recognize the type of pollutants. In this research, falling dust at five locations of Yazd are sampled by Marble Dust Collectors (MDCs) and their size distributions, morphologies, and chemical compositions are studied by XRD, EDX and SEM techniques. The resulted analyses of XRD patterns show the presence of silicates, carbonates, and phosphates group minerals in samples including calcites, quartz, gypsum, magnesium carbonate, and aluminum phosphates components. Furthermore, the analysis of the size and shape of the dust by recorded SEM images indicates capsular, triangular, spherical, irregular, and polyhedral shapes of particles. The size analyses of samples lead to estimate the range of 1 to 30 microns of particles with the maximum size distributions between 2 to 7 microns.}, Keywords = {Morphology, Dust, Mineralogy, SEM, EDX, XRD.}, volume = {26}, Number = {0}, pages = {781-784}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2188-en.html}, eprint = {http://opsi.ir/article-1-2188-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Askari, Mehdi}, title = {Introduction of an infrared metamaterial biosensor with a high sensitivity}, abstract ={  In this paper, using simulation methods, we have introduced a metamaterial sensor, with the unit cell containing two silver bars and two silver slabs, operating in infrared frequency range. Using water between metallic elements, a resonance frequency205.3 THz is calculated, and when a 25 percent glucose solution is used between them, a resonance frequency 201.1THz is obtained. Consequently, the sensitivity of the designed sensor is calculated to be 105TH/RIU (equivalent to 775mm/RIU) which is high compared to the sensitivity of other sensors introduced so far.    }, Keywords = {resonance, sensor, metamaterials, terahertz oscillations.}, volume = {26}, Number = {0}, pages = {785-788}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1950-en.html}, eprint = {http://opsi.ir/article-1-1950-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Najafy, Mohanna and Sepehr, Arezue and Shayganmanesh, Mahdi and Tanhaei, Ehsan and Majidof, Mohammad mahdi}, title = {Modeling of Nd:YAG dual end pumped zigzag slab Amplifier}, abstract ={A numerical modeling of end-pumped zigzag slab amplifier regarding contra directional pumping and saturation features is investigated theoretically. Spatial dependent rate equation has been solved taking into consideration the pump and laser beam saturation effects at high power scale. As an advantage, gain coefficient distribution along the crystal length, absorption coefficient versus pump power and optimum crystal length are calculated. Laser parameters could have noticeable differences in contrast with analytical approaches considering slab crystal as a bulk.}, Keywords = {laser amplifier, zigzag slab Amplifier, finite difference method, saturation effects, optimizing.}, volume = {26}, Number = {0}, pages = {789-792}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1941-en.html}, eprint = {http://opsi.ir/article-1-1941-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Riahi, Ali and Vahedi, Mohammad and Khalilzadeh, Jav}, title = {Theoretical Investigation of the Effect of Absorbing Layer Thickness and Geometry Effect on the Sensitivity of Tapered-Fiber Sensors}, abstract ={In this paper, a comprehensive study was conducted to determine the optimum geometry resulting in the largest sensitivity for the tapered fiber-optic gas sensors. A staircase concatenation method was introduced to investigate the effect of geometry and the absorbing layer thickness. The sensitivity of the sensor is increased with increasing of the tapering angle and decreasing of the tapered diameter. Refractive index of the layer is an important parameter affecting the sensitivity. If refractive index of the layer is larger than refractive index of the fiber, some optimum points are observed and for the case that the refractive index of the layer is smaller than that of the fiber, the sensitivity is increased by increasing the layer thickness.}, Keywords = {Tapered optical fiber, layer thickness effect, Evanescent field, Sensitivity.}, volume = {26}, Number = {0}, pages = {793-796}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1951-en.html}, eprint = {http://opsi.ir/article-1-1951-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Mohammadnezhad, Mohammad and Dastjerdi, Vahid and Vahedi, Mohammad and Zamani, Mohammadrez}, title = {Effect of Taper Angle on Sensitivity of Tapered Optical Fiber Hydrogen Gas Sensor}, abstract ={In this research, a tapered optical fiber was fabricated using single-mode optical fiber by a stretch and flame method. Then, using a magnetic sputtering method, 20 nm of palladium metal was deposited as an absorbent layer on the fiber. Spectral displacement of each fiber for various percentages of hydrogen gas (0 to 8%) was recorded in the room temperature by the optical spectral analyzer and the spectral sensitivity of 1/17×105 nm/RIU was gained. It is shown that the sensitivity is increases by increasing the taper angle.}, Keywords = {tapered optical fiber sensor, spectral sensitivity, H2 gas sensor}, volume = {26}, Number = {0}, pages = {797-800}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1952-en.html}, eprint = {http://opsi.ir/article-1-1952-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Alizadeh, Abdollah and Rashmani, Fardi}, title = {Design and Simulation of the tunable Optical Fabry-Perot filter by MOEMS technology}, abstract ={Optical interferometers, are very useful in various fields, where requiring precise wavelength tuning. Interferometers can amplify certain wavelengths with constructive interference and attenuate the rest, and can act as a wavelength filter. One of the well-known optical interferometers is the Fabry Perot cavity. In this study, an electrically adjustable optical filter is provided by integrating the Fabry Perot interferometer with two DBRs. DBR mirrors are 5 periodic layer with refractive index 2.1 and 1 respectively. The electrostatic part of the structure is a comb drives which supplied from 0 to 4 volts to change the cavity length, thereby tuning the center wavelength in the range 1400 to 1920 nm, and the adjustable range 520nm achieved.}, Keywords = {Tuneable Optical Filter, Fabry-perot Cavity, Comb Drive, MOEMS}, volume = {26}, Number = {0}, pages = {801-804}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1953-en.html}, eprint = {http://opsi.ir/article-1-1953-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Alizadeh, Abdollah and Azadi, Amir}, title = {Simulation of Microfluidic Channel and Electroosmotic Flow to improveing Biosensors}, abstract ={In recent years, there has been a growing interest in the development of Electronic and Optical Biosensors. Biosensors are suıtable for various applications. In this paper, microfluidic channel is used to improve the performance of optical Biosensor. Ion torrent approach used to increase the concentration of analyte in sensing area. For this purpose, an electric field has been applied to microchannel and Electroosmotic flow is produced. To apply electric field, two electrodes are considered at the microchannel surface. Without voltage applying, there are Laminar flow, but by applying voltage to the electrodes, a turbulence created in microchannel, and electroosmotic flow pushed the fluid toward the biosensor.}, Keywords = {Optical Biosensor, Microfluidic, Microchannel, Ion torrent}, volume = {26}, Number = {0}, pages = {805-808}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1954-en.html}, eprint = {http://opsi.ir/article-1-1954-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Karimi, Amir and Taherkhani, Mortez}, title = {Two-Mode Photon-Added Entangled Squeezed Coherent States and Their Entanglement}, abstract ={In recent two decades, many entangled quantum states have been introduced and studied among which can be mentioned the two-mode entangled squeezed coherent states. In this paper, by using these states we introduce a new type of entangled states named "two-mode photon-added entangled squeezed coherent states". Next, we consider the entanglement value of these states by studying concurrence for different values of photon-additions and squeezing parameters. Finally we compare the obtained results.}, Keywords = {Squeezed Coherent States, Entanglement, Concurrence, Photon-Added}, volume = {26}, Number = {0}, pages = {809-812}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1955-en.html}, eprint = {http://opsi.ir/article-1-1955-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Khalilzadeh, Elnaz and Chakhmachi, Amir and Yazdanpanah, Jamalaldi}, title = {Influence of pulse shape on chaotic behavior of electrons in strong laser pulse interaction with plasma}, abstract ={In this paper, the effect of the laser pulse shape on the chaotic behavior of electrons in strong laser pulse interaction with under-dense plasma is investigated using the fully kinetic PIC simulations. Our investigations show that occurring the chaos is strongly dependent on the initial conditions and by decreasing the laser pulse rise-time from 60 fs to 30 fs which is accompanied by an increase in the Ponderomotive and the electrostatic forces, the behavior of the electrons is completely different. Indeed, unlike the pulses with quickly rising time, in pulse with long rise-time, the field amplitude of scattered fields in plasma can act as a second electromagnetic wave and provide the necessary condition for the chaos.}, Keywords = {Laser-Plasma Interaction, Chaotic Behaviour, Particle-in-Cell Simulation, Laser Pulse Shape}, volume = {26}, Number = {0}, pages = {813-816}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1956-en.html}, eprint = {http://opsi.ir/article-1-1956-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Mousavibasri, Sharifeh and Khalilzadeh, Elnaz and Jahanpanah, Jafar}, title = {Investigating of Conservation Relation between Noises Flux by Considering the Different Damping Rate for Laser Oscillation Modes}, abstract ={In this paper, the conservation relation for noises flux by Considering the Different Damping Rate for three laser oscillation modes is analytically achieved. For this regards, the Maxwell-Bloch equations of motion are thus solved in the presence of three cavity Langevin forces associated with the simultaneous oscillations of cavity central mode and its left and right adjacent modes. Then, the noise of the cavity electric field, spontaneous emission radiation and laser pumping are calculated. It is finally demonstrated that the input noise flux of laser pumping is between the output noise fluxes of spontaneous and stimulated emission radiations of three oscillating modes according to the flux conservation law.}, Keywords = {Noises Flux Conservation, Damping Rate, Maxwell-Bloch Equations, Cavity Langevin Force}, volume = {26}, Number = {0}, pages = {817-820}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1957-en.html}, eprint = {http://opsi.ir/article-1-1957-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Mazhadi, Younes and Sohrabi, Foozieh and Hamidi, Seyedeh mehri}, title = {Detection of water pollution containing nitrate ion using plasmonic ellipsometry}, abstract ={In this paper, we have investigated the detection of the water pollution contaminated with nitrate ion. Considering the important role of nitrate detection in saline and sweet water as well as its direct effect on people's health particularly children, we have mounted a highly-resolved surface plasmon resonance setup using a two-dimensional plasmonic nano grating. For this purpose, the lowest, allowable quantity of nitrate (i.e. 10 ppm) was recorded using the phase-sensitive measurement of water polluted with nitrate, as mentioned by World Health Organization (WHO). The results have shown a high sensitivity of this sensor in the presence of various concentrations of nitrate.}, Keywords = {Ellipsometry, Nitrate, Surface Plasmon Resonance, Two-dimensional plasmonic nanograting.}, volume = {26}, Number = {0}, pages = {821-824}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2217-en.html}, eprint = {http://opsi.ir/article-1-2217-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Mosleh, Mohamad and Ranjbaran, Maliheh and Hamidi, Seyedeh mehri}, title = {Tunable Fano resonance in atomic-plasmonic hybrid structure made of Rubidium atomic vapor-Au thin film}, abstract ={Following the rapid progress in the field of plasmonics, it is possible to alter the optical properties of materials as a consequence of light matter interaction. Resonant coupling between the relatively broad plasmonic resonance and ultra-narrow atomic line is one of these cases which causes changing of the atomic line shape and so supports special applications. In this paper we have studied the coupling between the plasmonic modes and D2 resonance line of Rubidium based on the theoretical Fano model. In the proposed structure, we have introduced the change of the angle of light incidence as an efficient tool for tuning the atomic line-shape and its associated Fano resonance.}, Keywords = {Fano lineshape, plasmonic mode, EIT, atomic-plasmonic hybrid structure, Rubidium atom.}, volume = {26}, Number = {0}, pages = {825-828}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2218-en.html}, eprint = {http://opsi.ir/article-1-2218-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Sohrabi, Foozieh and Kiaei, Mohsen and Mosivand, Alireza and Babanejad, Niloofar and Nabid, Mohammad reza and Hamidi, Seyedeh mehri}, title = {Fabrication of 2D Plasmonic Chip based on Biocompatible Silk Substrate}, abstract ={From ancient time, silk was known as a luxury fabric, however, its outstanding mechanical and optical properties have attracted the scientists in recent years, which led to numerous extracted products like microspheres, hydrogels, tubes, etc. In this paper, first we explained our experimental method in extracting the biocompatible silk solution in several steps and then the silk thin film was suggested as a plasmonic substrate. Circular dichroism (CD) response of silk solution was recorded which has shown a considerable CD signal with high sensitivity to right- and left-hand circularly-polarized incident light. This outstanding property has a significant potential in CD plasmonic sensing. Regarding its optical properties, the silk film was patterned using soft lithography technique and a thin layer of gold was sputtered on its top surface. Our 2D plasmonic sensor with potential medical application like neuroplasmonic was fabricated.}, Keywords = {Silk, Thin film, Plasmonic substrate, Sensor.}, volume = {26}, Number = {0}, pages = {829-832}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2219-en.html}, eprint = {http://opsi.ir/article-1-2219-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Hamzehzadeh, Mehdi and Roostaei, Neda and Ghasemi, Masih and Shnan, Nazzar and Mahmoodi, Masoud and Hamidi, Seyedeh mehri}, title = {Construction and characterization of new thermoplasmonic structure based on silver nano rods by glancing angle deposition technique}, abstract ={An ultrahigh vacuum system for the deposition of thin films with glancing angle deposition method is described. Fabricated silver nano wire thin film by this method shows efficient thermoplasmonic effect by the aid of plasmonic imaging system. These results show good modification of near field enhancement in the perforated sample in the comparison to the normal sample which is useful for new miniaturized thermoplasmonic samples.}, Keywords = {Glancing angle deposition, nano wire thin film, plasmonic imaging system, thermal evaporation system,}, volume = {26}, Number = {0}, pages = {833-836}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2220-en.html}, eprint = {http://opsi.ir/article-1-2220-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Habibi, Forouzan and Ghadi, Ami}, title = {Nonlinear coupling of two nonlinear coupled Plasmonic nanowires in the presence of Kerr and two-photon absorption}, abstract ={The nonlinear interactions of coupled nanowires are important phenomena in data processing of integrated photonic circuits. In this paper, we investigate the nonlinear coupling of two silver nonlinear coupled plasmonic nanowires under different amplitudes in the presence of Kerr effect, and the other case the medium has Kerr and two photon absorption (TPA) effect too. The results show that in the presence of two-photon absorption effect the nonlinear optical effects appear in lower initial amplitudes Kerr effect. Our results show that this difference is in order to 102. This means that the Kerr effect occurs in upper intensities than the two-photon absorption effect. Also, nonlinear effect leads to decrease the exchange of plasmonic waves between two nanowires.}, Keywords = {two-photon absorption effect, Kerr effect, nanowire, nonlinear coupling.}, volume = {26}, Number = {0}, pages = {837-840}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1958-en.html}, eprint = {http://opsi.ir/article-1-1958-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Rafieipour, Peymaneh and GhasempourArdakani, Abbas}, title = {Improvement of the operation of random lasers by using a double-sided tape}, abstract ={In this paper, we fabricate a random laser based on a glass substrate as the scattering medium and the solution of rhodamine B dye doped SU-8 polymer as the gain medium. Then, we investigate the possibility of the emission of random laser light from the fabricated sample. Then, we stick a double-sided tape to the sample in order to provide the external feedback for random lasing emission. By the investigation and comparison of the emission spectra and lasing thresholds at two different pump positions (P1 and P2) corresponding to the sample with and without the tape, we come to this conclusion that providing external feedback results in the considerable increase of the random laser emission intensity by a factor of 1.5 and 4.22 at the pump positions P1 and P2, respectively. Also, the random laser threshold decreases by a factor of 1.6 and 1.8 at these two pump positions, respectively. The results of this study can suggest a simple and inexpensive method for the improvement of the operation of random lasers.}, Keywords = {random laser, multiple light scattering, glass substrate, double-sided tape, external feedback.}, volume = {26}, Number = {0}, pages = {841-844}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1959-en.html}, eprint = {http://opsi.ir/article-1-1959-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Rafieipour, Peymaneh and GhasempourArdakani, Abbas}, title = {Realization of random lasing action with resonant feedback using graphene oxide as the scattering medium}, abstract ={In this paper, we use graphene oxide as the scattering medium in random lasers. Light amplification is provided by RhB dye solution via stimulated emission process. By investigating the dependence of the emission spectrum on the pump energy density, we observe that some narrow peaks with linewidth of approximately 1 nm appear in the emission spectrum when pump energy density exceeds a threshold value. The number of these peaks increases by increasing the pump energy density and a strong competition between the lasing modes is observed. Furthermore, we measure the threshold pump energy density for the fabricated sample based on the solution of RhB dye and graphene oxide. Then, we compare the emission spectrum corresponding to the solution of RhB dye and graphene oxide with the emission spectrum corresponding to the solution of dye alone. Since only the broad spontaneous emission spectrum is observed in the emission spectrum of neat dye solution, the resonant feedback of the random laser is then provided by light multi-scattering from graphene oxide.}, Keywords = {random laser, resonant feedback, multiple light scattering, grapheme oxide.}, volume = {26}, Number = {0}, pages = {845-848}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1960-en.html}, eprint = {http://opsi.ir/article-1-1960-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Rafieipour, Peymaneh and Ghasempourardakani, Abbas and Samimipour, Mohammad Jaafar and Tashkourian, Jav}, title = {Fabrication of a tunable random laser based on the solution of dye and Mn doped ZnS quantum dots}, abstract ={In this paper, a tunable random laser is fabricated based on the solution of rhodamine B dye and Mn doped ZnS (ZnS:Mn) quantum dots. The solution of rhodamine B dye amplifies light via stimulated emission process. ZnS:Mn quantum dots also provide the optical feedback via light multiple scattering. First, we show that the emission spectrum of the solution of dye and ZnS:Mn quantum dots is very intensive and narrow in comparison with the emission spectrum of the solution of dye alone. Then, we measure the lasing threshold for the sample composed of dye and ZnS:Mn quantum dots. In the following, we investigate the effects of the concentration of ZnS:Mn quantum dots on the emission spectrum and lasing threshold. The results show that the emitted wavelength shifts to shorter wavelengths and the lasing threshold decreases by increasing the concentration of ZnS:Mn quantum dots. This procedure can be used for tuning the random laser emission.}, Keywords = {random laser, multiple light scattering, tunability, ZnS:Mn quantum dots.}, volume = {26}, Number = {0}, pages = {849-852}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1961-en.html}, eprint = {http://opsi.ir/article-1-1961-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Eskandari, Mehdi and Malekfar, Rasoul}, title = {Optical and structural investigation of PANI nanofibers and MWCNT/PANI nanocomposites}, abstract ={Due to the increasing need for clean energy sources, energy storage systems are expanding rapidly. So, the ability of storing energy with cost benefit methods is so important. Clean energy storage systems are capacitor, supercapacitor, batteries, etc. In this study, optical and structural properties of poly aniline and MWCNTs/PANI nanocomposites as applied material in supercapacitor electrodes were investigated. PANI in conductive phase and MWCNT/PANI composite were synthesized by in situ method and optical and structural properties including Raman spectra and were investigated. Besides, the morphology of samples was studied by FESEM.}, Keywords = {polymer nanofiber, nanocomposite, Raman spectra, supercapacitor.}, volume = {26}, Number = {0}, pages = {853-856}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2221-en.html}, eprint = {http://opsi.ir/article-1-2221-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Ardekani, Maryam and Mahmoodi, Maryam and Tavassoli, Seyed hass}, title = {Pyrene-based Fluorescence Probe for Nitromethane Detection}, abstract ={The study of changes in fluorescence emission of monomer and excimer bands of pyrene molecule is one of widely used approaches to detect molecules with electron-deficiency. This method is capable of detecting explosive materials and fast screening of suspect substances. In the present paper, using fluorescence spectroscopy of pyrene solution, detection of nitromethane with different concentrations is experimentally investigated. The results show that fluorescence quenching of excimer band, on the contrary to the monomer band, bears a considerable sensitivity for nitromethane detection.}, Keywords = {Fluorescence quenching, Pyrene molecule, Monomer and excimer band, Explosive materials detection, Nitromethane}, volume = {26}, Number = {0}, pages = {857-860}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2223-en.html}, eprint = {http://opsi.ir/article-1-2223-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Kakoolaki, Nazanin and Hassanzadeh, Abdollah}, title = {Coupling coefficients of a thin-film waveguide grating based on metamaterial}, abstract ={We study the propagation of waves in a new dielectric slab waveguide grating with metamaterial cover. Perturbation theory is used to derive an expression that approximates the transverse coupling coefficient for coupling between deferent Transverse Magnetic (TM)-polarized guided modes in a waveguide with a rectangular grating. We numerically obtain the coupling coefficient of waveguide gratings with a double negative cover and compare with that of conventional waveguides, then we report the unusual properties of this structure. We show that the coupling coefficient of the fundamental mode is disappeared. Also the magnitude of the left-handed waveguide gratings enhances more than one order of magnitude.}, Keywords = {Coupling coefficient, Metamaterial, Optical waveguide grating.}, volume = {26}, Number = {0}, pages = {861-864}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2224-en.html}, eprint = {http://opsi.ir/article-1-2224-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Layeghi, Azam and Latifi, Hamid and Zibaii, Mohammad Ismail and Ranjbar-Naeini, Omid R}, title = {Birefringence Measurement of Ferro-Fluid based on Non-Adiabatic Tapered Fiber Optic in Fiber Loop Mirror}, abstract ={Birefringence measurement is an important properties of optical material in optical area. Compared with conventional birefringence measurement method, a novel birefringence measurement method of ferro-fluid is presented using non-adiabatic tapered fiber optic in fiber loop mirror configuration. Simulation and experiment were done to prove the effective of measurement system. Also, the birefringence of ferro-fluid in the range from 0 to 29.48 mT was obtained equal to 0-3.5‰10-4. This structure has great potential in the optical sensing area and biomedical applications as drug delivery.}, Keywords = {Birefringence, Fiber loop mirror, Ferro-fluid , non-adiabatic tapered fiber, Optical fiber sensor.}, volume = {26}, Number = {0}, pages = {865-868}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1962-en.html}, eprint = {http://opsi.ir/article-1-1962-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Zahedidizaji, Seyed morteza and Farahbod, Amir hossein and Mahmoudi, Mohamm}, title = {Application of the Beam Guiding System for LED-Pumped Ce:Nd:YAG Laser}, abstract ={In this paper, the experimental findings where have been obtained by applying optimized pumping system and arrays of white spectrum light emitting diodes to pump Ce:Nd:YAG active medium are presented. The pumping system has a pentagon transverse geometry that is consisted of 7 arrays of ten watts LED on each side and total 35 light emitting diodes. The laser performance of the later pumping structure was compared with a closed coupled pumping system where consist of 64 blue LED in contact with the outer surface of laser rod. The comparable results, with equal optical losses, under laser relaxation oscillations and Q-switching were obtained.   }, Keywords = {Ce:Nd:YAG active medium, LED-pumped laser, Optical pumping system}, volume = {26}, Number = {0}, pages = {869-872}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1963-en.html}, eprint = {http://opsi.ir/article-1-1963-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Salimianrizi, Saeed and Jandaghi, Maryam and Alipour, Samira and Mohammadzaheri, Zahra and Javadidashkasan, Mohammad and Hajinia, Elmir}, title = {Design and fabrication of a round trip and compact amplifier system of passively Q-switched microlaser up to 11.5MW}, abstract ={In this paper design and fabrication of a Nd:YAG amplifier of passively Q-switched microlaser oscillator is reported. The microlaser generates pulses of 8 μJ energy and 800 ps duration at 2 kHz repetition rate with beam quality factor, M2 < 1.3. The microlaser pulse was amplified up to 9.2mJ energy and 11.5MW peak power at 1-10 Hz repetition rate in a round trip one-stage flash-pumped Nd:YAG amplifier. In addition, presented experimental results have a very good concurrence with simulation data.}, Keywords = {Amplifier, Passively Q-switched, Flash Lamp, Microlaser}, volume = {26}, Number = {0}, pages = {873-876}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1979-en.html}, eprint = {http://opsi.ir/article-1-1979-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Kamandi, Fateme and Arabanian, Atoosa sadat and Massudi, Rez}, title = {Optimization of effective parameters on the Non-collinear Optical Parametric Amplifier gain with femtosecond pulses and tunable in the wavelength range of 520-700 nm}, abstract ={In this paper the effective parameters on the non-collinear optical parametric amplifier (NOPA) gain in the wavelength range of 520-700 nm have been numerically investigated. For this purpose, the phase matching and non-collinear angle and the thickness of the crystal is optimized. Therefore, the numerical calculation show that the optimum non-collinear and phase matching angles for uniform amplification on whole spectrum range of 520-700 nm are equal to 3.91 and 32.27 degree, respectively. Also, by using this non-collinear geometry the walk-off effect inside the crystal is reduced.}, Keywords = {NOPA,femtosecond pulse,non-collinear angle}, volume = {26}, Number = {0}, pages = {877-880}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2005-en.html}, eprint = {http://opsi.ir/article-1-2005-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Moradi, Sabra and Abdighaleh, Reza and Roumi, Bita and Madani, Amir}, title = {Study of Kerr Rotation in Graphene/SiC/Al Structure in THz Region}, abstract ={In this paper, reflection, Kerr rotation and ellipticity spectra of a three layered structure constitiuted of Graphene, Silicon Carbid, and Aluminium were studied  in terehertze frequency region. Using 4×4 transfer matrix method the spectra of Graphene/SiC structure were calculated and compared with  the spectra of Graphene/SiC/Al structure. The  results show that both reflection spectra have resonance behaviors. But, in the structure containing the Al, the reflection values at similar frequencies are different. Moreover, resonance behavior in Kerr rotation and ellipticity spectra were seen for both of the structures, inwhich by using the Al layer their maximum values were changed. Also, by  increasing  the external magnetic field strength, behavior of  Kerr rotation and ellipticity spectra were changed.}, Keywords = {Graphene, Kerr rotation, Reflection.}, volume = {26}, Number = {0}, pages = {881-884}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2013-en.html}, eprint = {http://opsi.ir/article-1-2013-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Jafarfard, Mohammadreza and Armandsefat, Zahr}, title = {An Investigation of band pass filter in phase volume measurement}, abstract ={volume measurement of a phase object is one of the most distinctive capabilities of quantitative phase microscopy (QPM). However, the accuracy of a measured volume is limited by the different noises of a measurement system and the finite band pass filter used in the phase extraction algorithm. In this paper, we investigate the phase extraction algorithm and through comparison six kind of band pass filters determine optimum filter so that minimizes the morphological error in the phase volume measurement.}, Keywords = {band pass filter, phase object, quantitative phase microscopy}, volume = {26}, Number = {0}, pages = {885-888}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2021-en.html}, eprint = {http://opsi.ir/article-1-2021-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Darvishibohlooli, Sajjad and Hatami, Mohse}, title = {Simulation and optimization of CW thulium doped fiber laser}, abstract ={In this paper, we simulate the main part of a fiber laser which is the amplifier and a cavity and optimized based on effective parameters. The chosen fiber laser operates in 1908 nm and pumped by diode laser at 790 nm with pump power of 443 Watt. The important parameters such as input pump power, fiber Bragg grating reflectivity (which use as a mirror in laser cavity) and active fiber length determine the amount of laser output power. In this paper, by optimization the active fiber length and the fiber Bragg grating reflectivity (as the end mirror of the cavity) we have obtained the amount of maximum output of fiber laser. The results of this simulation can use for comprehensive design of CW fiber laser and Increase the laser efficiency by optimization the other important parameters of this type of lasers. }, Keywords = {Fiber laser, Fiber Bragg grating}, volume = {26}, Number = {0}, pages = {889-892}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2025-en.html}, eprint = {http://opsi.ir/article-1-2025-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Ayareh, Zohreh and Moradi, Mehr}, title = {Investigation of localized surface plasmon resonance and Fano resonance in Au:Ag heterodimers}, abstract ={Simulation of Au:Ag heterodimers was carried out in LUMERICAL software using FDTD solver. Localized surface plasmon resonance (LSPR) was calculated for Au nanoparticles and compared with LSPR and Fano resonance for Au:Ag heterodimers. The Fano resonance peak was optimized by changing the nanoparticle size and the distances between the nanoparticles. The highest intensity of the Fano resonance peak was achieved when the radius ratio of Au: Ag was 4:1, and the distance was 9 nm. The outcomes reveal that by a slight changing the refractive index of a substance in biosensors, the Fano resonance peak has higher sensitivity than the localized surface plasmon resonance peak.}, Keywords = {Finite difference time domain (FDTD), Localized surface plasmon resonance (LSPR), Fano resonance, Gold and silver nanodimers.}, volume = {26}, Number = {0}, pages = {893-896}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2033-en.html}, eprint = {http://opsi.ir/article-1-2033-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Jamshidian, Mozhgan and Moradi, Mehrdad and Dehghanibidgoli, Rez}, title = {Evaluation of essential oils in different parts of peppermint using Raman spectroscopy methods}, abstract ={Essential oils are the aromatic compounds that found in various plant tissues and evaporate at room temperature, these oils named volatile oils or essential oils. Essential oils are the secondary metabolites of a plant that are the main part of medicinal plants and used in medicine. The purpose of this article is to identify essential oils in different parts of peppermint such as stem and leaf using Raman spectroscopy as an alternative to gas chromatography. In this study, peppermint was first collected from Fin Kashan region, then fresh leaf and stem spectra were obtained by Raman spectroscopy. According to the results that obtained from Raman spectroscopy, the amount of essential oil in the leaves of the plant was higher than the amount of stem, which confirmed by the results of chromatographic analysis.}, Keywords = {Essential oil, Leaves and stem Peppermint, Raman spectroscopy, Clevenger, Gas chromatography}, volume = {26}, Number = {0}, pages = {897-900}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2034-en.html}, eprint = {http://opsi.ir/article-1-2034-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Payandehdarinejad, Zahra and Ghaffarinejad, Ali and Norouzian, Shahab and Ghaffari, Bij}, title = {Nanorode zno and conductive polymer composite synthesis on carbon cloth substrate}, abstract ={In this article, we have developed synthesis of a new composite by zincoxide nanoparticles and polyaniline as a p-n junction to be used in photonic device. Both structures are synthesized based on a carbon cloth through electrochemical methods. Morphological analysis were performed by SEM imaging and proportion of materials were analyzed and measured by EDX-MAP and XRD.Finally, it was shown that this new pn junction may have potential application in photoelectronic devices as photodetector.}, Keywords = {zincoxide, polyaniline, electrochemical method}, volume = {26}, Number = {0}, pages = {901-904}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2048-en.html}, eprint = {http://opsi.ir/article-1-2048-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Sabatyan, Arash and Rahmani, Zaynab}, title = {Generation of off-axis optical vortex using spiral square zone plate}, abstract ={This paper presents an off-axis optical spiral diffractive element whose focus is outside of the optical axis. This element is used to generate off-axis optical vortices. It is demonstrated that various vortices in a desired place at the focal plane are produced by changing topological charge and a so called shifting parameter. The simulation results are verified in the laboratory which revealed that both of the simulation and experimental results are in a good agreement.}, Keywords = {Beam structuring, Diffraction, Diffractive Lens, Optical vortices}, volume = {26}, Number = {0}, pages = {905-908}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2066-en.html}, eprint = {http://opsi.ir/article-1-2066-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Sepahvand, Nasrin and Bahrami, Mohse}, title = {Analysis the electrical charge transition and external quantum efficiency in a thin layer of an organic semiconductor in organic solar cells}, abstract ={In this research, the electrical charge transition and the number of charge carriers collected on organic solar cell electrodes with a checkered structure under the influence of its governing factors have been investigated and calculated. In this regard, using the Monte Carlo numerical simulation with Porter, Callus and Lebowitz algorithms, the paper has investigated the two layers consisting of PCBM and P3HT organic materials with thickness of 60×15×5 nm and 60×30×5 nm. Finally, considering the conditions of thin layer the external quantum efficiency (EQE) was calculated and it was concluded that as the layer width increased, the amount of external quantum efficiency decreased.}, Keywords = {External quantum efficiency, Monte Carlo, organic semiconductor thin layer, solar cell.}, volume = {26}, Number = {0}, pages = {909-912}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2068-en.html}, eprint = {http://opsi.ir/article-1-2068-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Baniasadi, Marzie and Rahimi, Mojtaba and Baghshahi, Hamidreza and Forouzeshfard, Mohammadrez}, title = {Simulation of I-V Curve of Perovskite Nano-structured Solar Cell by COMSOL Software and Determination of Optimum Thickness of Absorber Layer}, abstract ={Simulation is dramatically important for investigation of solar cells, because it  noticeably makes the research more efficiently done.  Additionally, it makes possible the estimation of optimal conditions for solar cells. In this paper, we have simulated a nano-structured Perovskite solar cell using Comsol software. Next, thickness of Perovskite layer was optimized to achieve the highest power efficiency which was 6.6% in 300 nm thickness.        }, Keywords = {Solar Cell, Perovskite, Simulation, COMSOL.}, volume = {26}, Number = {0}, pages = {913-916}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2070-en.html}, eprint = {http://opsi.ir/article-1-2070-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {FeiziMohazzab, Behnaz and jaleh, Babak and Mahmoudi, Fatemeh and Momeni, Amir}, title = {Titanium irradiation using fiber laser: formation of titanium carbide and study of its hardness}, abstract ={In this work, a simple and cost-effective process to formation titanium carbide on titanium surface has been presented. To this aim, titanium was irradiated in n-heptane using a fiber laser. Laser ablation process was conducted in n-heptane for different ablation process times at the same irradiation conditions. The Laser-ablated samples were investigated by characterization analyses such as X-ray diffraction, energy dispersive X-ray spectroscopy, field emission scanning electron microscopy, and Vicker’s microhardness indenter. Laser ablation process in n-heptane led to increase in the microhardness of Ti.}, Keywords = {Laser ablation, Microhardness, Titanium, Titanium carbide, Wear.}, volume = {26}, Number = {0}, pages = {917-920}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2088-en.html}, eprint = {http://opsi.ir/article-1-2088-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Zareian, Amir hossein and KalateSeyfari, Abbas and Bahadoran, Mahdi}, title = {Design of a Plasmonic Waveguide for Refractive Index Sensor}, abstract ={An anti-resonant reflecting plasmonic waveguide from core of FK51A-glass based on the resonant coupling between a guided dielectric mode and surface plasmon polariton wave is designed for refractive index sensing application. The Finite Difference Eigen solver method is used and two fundamental modes are obtained at the visible wavelengths by varying the refractive index of the superstrate layer. Considering the light evanescent through the superstrate layer and light responses in this layer, a sensitivity as high as 0.02 (dB/nm)/RIU was measured for the TM1 mode, which is quite applicable for sensing application.}, Keywords = {Anti-resonant reflecting waveguide, Plasmonic waveguide, Refractive Index Sensor,}, volume = {26}, Number = {0}, pages = {921-924}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2089-en.html}, eprint = {http://opsi.ir/article-1-2089-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Sabatyan, Arash and Alizadeh, Elnaz}, title = {Generation of hollow elliptical optical beam using phase shifted elliptical zone plate}, abstract ={In this paper, a novel zone plate-based element is introduced to produce an elliptical annular light beams. On the other hand, the element is able to convert an incident plane beam into a focused elliptical light beam. Having presented the structure of the element, its capability in generating a variety of elliptical beams having a desired orientations and sizes ‍‍is theoretically demonstrated.  Additionally, the corresponding experimental examinations verify the simulation results.  }, Keywords = {Beam Shaping- Diffraction- Diffractive lens}, volume = {26}, Number = {0}, pages = {925-928}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2090-en.html}, eprint = {http://opsi.ir/article-1-2090-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Keikhosravi, Atefeh and GhavamiSabouri, Saeed and Khorsandi, Alirez}, title = {Converting the profile of a Gaussian beam to a Bessel one using spatial amplitude modulator}, abstract ={The Bessel beam, as a non-diffracted beam, has wide applications in the field of science and industry. There are various ways to produce a beam with this profile. Among these methods, the use of computer-controlled tools such as the Spatial Light Modulator allows the active beam to be generated. In this paper, with the idea of producing a Bessel beam by a ring, using a mathematical software, the diffractive element is designed to generate the Bessel beam, and then, by numerical solution of the Fresnel diffraction integral, the outline model is simulated; eventually by putting the diffractive element on the path of Gaussian beam using a spatial amplitude modulator, generated Bessel-Gauss beams in laboratory.}, Keywords = {Beam profile, Bessel beam, Diffractive optical element, Gaussian beam, Special light modulator.}, volume = {26}, Number = {0}, pages = {929-932}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2097-en.html}, eprint = {http://opsi.ir/article-1-2097-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {AliShamsi, Yasna and Mirzaei, Sevda and Chenaghlou, Alirez}, title = {Investigation of Spontaneous Decay of Atom on the Entanglement Dynamics Between Two Identical Atoms in the Tavis- Cummings Model}, abstract ={In this article, by considering the Tavis-Cummings model Hamiltonian we study the entanglement dynamics between two identical two-level atoms interacting with the single-mode quantized radiation field. The main problem in quantum information processing (QIP) is decoherence that is a result of the coupling of the system to its surrounding environment such as noise, spontaneous decay of atom, and so on which can cause quantum entanglement destruction. Therefore, we will investigate the effects of spontaneous decay of the two-level atom on the dynamics of entanglement between the two atoms. The concurrence measure will be used to evaluate the degree of entanglement.}, Keywords = {Concurrence, Entanglement, Spontaneous decay, Tavis-Cummings mod}, volume = {26}, Number = {0}, pages = {933-936}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2101-en.html}, eprint = {http://opsi.ir/article-1-2101-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Ajamgard, Narges and Chehrghani, Ali and Torkamani, Mohammadjavad and Ghorbanzade, Atamalek and Sobhani, Mohammad javad and Koohian, Ataallah and Nabavi, Seyed has}, title = {Emission spectroscopy of plasma plume induced in CW fiber laser cladding of St 410 powder on St 304 substrate}, abstract ={spectroscopic approach was used to study the effects of laser power on quality of clad layer produced with laser cladding. A CW fiber laser with a 3 KW maximum power (1080 nm) was used to produce clad with St 410 powder on St 304 substrate. The plasma plume electron temperature  is computed from the Boltzman plot for five discrete Fe I lines at 382.782, 386.552, 393.029, 438.354 and 526.953 nm wavelength. We have found that the electron temperature decreases and dilution increases as the laser power is enhanced. Such a result could be useful to develop an online monitoring system of the dilution.}, Keywords = {CW fiber laser 3 KW, Electron temperature, Emission Spectroscopy, Laser cladding, Plasma Plume.}, volume = {26}, Number = {0}, pages = {937-940}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2111-en.html}, eprint = {http://opsi.ir/article-1-2111-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Abbaszadeh-Azar, Omid and Abedi, Kambiz}, title = {All optical switching based on the Kerr nonlinear multi-teeth-shaped plasmonic waveguide structure}, abstract ={An all-optical switch based on metal-insulator-metal plasmonic waveguide is presented on the basis of multi-teeth-shaped waveguide with teeth which filled by nonlinear Kerr and is numerically investigated. Using a finite-difference time domain simulation, it has been shown that by changing the light intensity, a definite optical stability is created for the optical signal, resulting in an optical switch. Using a finite-difference time domain simulation, it has been shown that by changing the light intensity, obvious optical stability is created for the optical signal, resulting in an optical switch. This stability results from a dielectric constant change, depending on the intensity, of the nonlinear material of the multi-teeth-shaped waveguide. This optical switch can have a potential application in all-optical processing and optical communication.}, Keywords = {all optical switch, plasmonic, multi-teeth-shaped waveguide, nonlinear Kerr effect.}, volume = {26}, Number = {0}, pages = {941-944}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2116-en.html}, eprint = {http://opsi.ir/article-1-2116-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Alilou, Sima and Shahrassai, Lay}, title = {NL Effects of Interaction Gaussian laser Beam with Inhomogeneous and Nonrelativistic plasma and Calculation of the Waves Magnetic Field}, abstract ={The interaction of electromagnetic waves (lasers) with plasma is important because of its important applications in plasma accelerators, X radiation production, laser fusion, generation of nonlinear effects such as ponderomotive force, which leads to accelerate plasma electrons, by oscillating them. In this paper, we consider the propagation of Gaussian electric field of high power laser with overdense on nonrelativistic plasma. Then we calculated the magnetic field of the EM wave via Maxwell equation. By comparison of them, we investigate the behavior and phase difference between them. Then we drew the spatial and temporal diagrams, and investigate physically. Then we calculated the ponderomotive force by gradient of the square of electric field intensity, and investigated that physically.}, Keywords = {Electromagnetic interaction, Gaussian laser beam, Magnetic field, Ponderomotive force}, volume = {26}, Number = {0}, pages = {945-948}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2133-en.html}, eprint = {http://opsi.ir/article-1-2133-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Rahro, Fatemeh and Golshani, Mojtaba and Taraz, Maji}, title = {Impact of curvature on PT-symmetry breaking in two curved optical waveguides}, abstract ={In this work, we investigate the PT-symmetry breaking in two periodically curved optical waveguides. To this end, two curved optical waveguides with gain and loss are considered. Numerical results show that by increasing the curvature, PT-breaking transition occurs at higher values of gain/loss strength.}, Keywords = {Parity-Time symmetry, Periodically curved optical waveguides, gain and loss.}, volume = {26}, Number = {0}, pages = {949-952}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2137-en.html}, eprint = {http://opsi.ir/article-1-2137-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Abbasi, Mohammad and Golshani, Mojtaba and Motamedifar, Mostaf}, title = {Impact of aperture thickness and width on the intensity pattern in Young’s double-slit experiment}, abstract ={In most theoretical studies on the interference and diffraction of light, impact of aperture thickness on the intensity pattern is ignored. In this paper, by considering the aperture as an optical waveguide, we investigate the intensity pattern of Young’s double-slit experiment for the apertures with finite thickness. Our results show that, in the case of normal incidence, the intensity pattern is symmetric and its peak and width are respectively smaller and wider than the pattern for the case of zero-thickness apertures. Moreover, our studies show that, based on the aperture thickness and width, interference pattern can be very different, when aperture illuminated by oblique radiation.}, Keywords = {Double-slit interference, Fraunhofer diffraction pattern, Aperture thickness and width.}, volume = {26}, Number = {0}, pages = {953-956}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2142-en.html}, eprint = {http://opsi.ir/article-1-2142-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Hooshmandfar, Rezvan and Rahimi, Mojtaba and Sabet, Mohamm}, title = {Manufacturing of the three cations perovskite solar cell and investigation of its stability in different environmental situations}, abstract ={Perovskite solar cells are highly developed due to their easy manufacturing and low cost, but there is a high sensitivity to moisture for these cells. In this paper, the design and fabrication of three cationic perovskite solar cells with chemical formula Cs0.05(FA0.83MA0.17)0.95 Pb(I0.83Br0.17)3  are discussed and their stability under four dessicator-dark conditions, Dessicator-light, lab-dark and under direct sunlight are investigated with the results of a voltage-current analysis. The results show the best stability of the perovskite nanostructure solar cells for the samples under dessicator-dark conditions which maintained their stability for approximately 35 days, which resulted in a 30% decrease in yield.}, Keywords = {Stability, Perovskite Solar Cells, Photovoltaic}, volume = {26}, Number = {0}, pages = {957-960}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2144-en.html}, eprint = {http://opsi.ir/article-1-2144-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Dehghani, Kambiz and Rahimi, Mojtaba and Marashi, Seyed Mohammad Bagher}, title = {Design and fabrication of multilayer optical nano coating as spectral selector in silicon solar photovoltaic panels}, abstract ={In this paper, TiO2AgTiO2 multilayer optical nano coating as spectral selector in silicon solar photovoltaic panels on a glass substrate using the PLD method. Different Thickness choose for each of layer and Thickness are optimized for maximum reflection in the NIR-IR region and maximum transmission in the visible region of sin light. TiO2AgTiO2 optimized coating which has a transmission capability of 88%  in Wavelength 580 nm in the visible region and a reflection of 90% in Wavelength 900 nm in the NIR-IR region.}, Keywords = {optical filter, spectral selector, solar panel, TiO2AgTiO2.}, volume = {26}, Number = {0}, pages = {961-964}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2155-en.html}, eprint = {http://opsi.ir/article-1-2155-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Saneinejad, Vandad and Rezaei, Fatemeh and Baratisedeh, Amirhossein and Gourani, Pouy}, title = {Construction of laser Doppler vibrometer and velocimeter device}, abstract ={In this paper, construction of laser Doppler vibrometer device is studied. Michelson interferometer has been used to divide the laser beam into two reference and measurement arms. The used set-up in this experiment is from kind of hemodyne group. The results indicate an acceptable consistency between the results of the measurement of device with identified frequency given to device which shows the high accuracy of the device in the measurements. Furthermore, by suitable signal processing and omitting all of optical, electrical and background noises, the frequency of vibrating object can be extracted with discrimination of the signal from noise.}, Keywords = {vibrometer, laser, Doppler, moving target, noise}, volume = {26}, Number = {0}, pages = {965-968}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1984-en.html}, eprint = {http://opsi.ir/article-1-1984-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Arefnia, Fatemeh and Hosseini, Seyedeh Mahshad and KarimiTar, Hedieh and AsadollahiFana, Amir and Ghaneie, Firoozeh and Zibaii, Mohammad Ismail and Latifi, Hami}, title = {Modeling of Brain Tissue Refractive Index Changing by Ultrasound for Directing Light in Optogenetic Stimulation}, abstract ={Understanding and controlling the function of the brain is a challenge in modern neuroscience. Optogenetics as a new tool in neuroscience provides an effective way of manipulating a specific cell type by light stimulating microbial opsin expressed cells on a timescale of milliseconds. Typically, light delivery into targeting areas is achieved using optical fibers coupled to external laser diodes or light emitting diodes (LEDs). The optical fibers are inserted into the skull to stimulate the neurons, which is impractical for daily use. Also, scattering processes limit the depth to which externally focused light can penetrate tissue. In this paper we present that ultrasound can be used to define and steer the trajectory of light within scattering media by exploiting local pressure differences created by acoustic waves that result in refractive index contrasts. We demonstrate the application of this technology can be used for confining light through mouse brain tissue for optogenetics applications.}, Keywords = {Acoustic pressure, Brain tissue, Optogenetics, optical modulation, refractive index.}, volume = {26}, Number = {0}, pages = {969-972}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2170-en.html}, eprint = {http://opsi.ir/article-1-2170-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Alizadeh, Salar and Panahifar, Hossein and Moradhaseli, Ruhollah and Khalesifard, Hamid rez}, title = {Study of Urmia Lake Atmosphere using a ground-based LiDAR}, abstract ={A ground-based remote sensing station was installed on the Urmia Lake coast for atmospheric studies in October 2018. The station is equipped with a scanning LiDAR. The studies on this station show, in the warm days of the year, the particles with a volume depolarization ratio of 10 to 20 percent enter the atmosphere. At this time, the atmospheric extinction coefficient was changing from 0.001 to 0.003 m-1. These particles are mainly observed in the heights below 500 meters in the atmosphere. The surface wind speed affects the occurrence of atmospheric phenomena that are rising from the ground up to a height of 1000 meters. Rainfalls affect the height and type of these aerosols and cause them to settle.}, Keywords = {aerosols, Urmia Lake, extinction coefficient, volume depolarization ratio, ground-based scanning LiDAR.}, volume = {26}, Number = {0}, pages = {973-976}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2176-en.html}, eprint = {http://opsi.ir/article-1-2176-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Gholipour, Ehsan and Fallah, Reza and Khorashadizadeh, Seyed Mohammad and Niknam, Ali rez}, title = {Self-focusing of Gaussian laser beams in magnetized inhomogeneous plasma}, abstract ={In this paper, the self-focusing of a Gaussian laser beams in the magnetized inhomogeneous cold plasma is investigated by considering the linear and exponential profiles for electron density. For this purpose, using the Maxwell’s and the plasma hydrodynamic equations, a relation for the changes of laser spot radius is obtained. Using the Runge-Kutta method, the effect of the plasma inhomogeneity, external magnetic field, and laser frequency on the beam self-focusing is investigated. The results indicate that the increase of the magnetic field strength and laser frequency enhance the beam self-focusing and the initial plasma density affects the beam propagation in the plasma. Comparison of the results shows that the self-focusing in the exponential inhomogeneous plasma occurs at a shorter distance than the linear inhomogeneous plasma, but the variations of laser spot radius in the plasma with linear density profile is more intense than the exponential profile.}, Keywords = {Laser plasma interaction, Self-focusing, inhomogeneous plasma, Magnetized plasma, Gaussian beams.}, volume = {26}, Number = {0}, pages = {977-980}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2179-en.html}, eprint = {http://opsi.ir/article-1-2179-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {SafaeiBezgabadi, Abolfazl and BorhaniZarandi, Mahmood and AghaBolorizadeh, Mohamm}, title = {A New Approach for Pulse Propagation through Nonlinear Optical Waveguides for Applying in Photonic Quantum Technologies}, abstract ={In this paper, we intend to introduce a new approach to study the pulse propagation through nonlinear optical waveguides for using them in the photonic quantum technologies. Here, we simulate the obtained coupled differential equations in the present approach where they are stochastic partial differential equations. Furthermore, by applying this approach a new set of partial differential equations is achieved for describing supercontinuum generation (SCG) process in optical fibers that it is different from the current governing equation (generalized nonlinear Schrodinger equation) for SCG.}, Keywords = {Optical Waveguides, Photonic Quantum Technologies, Pulse propagation, Supercontinuum Generation.}, volume = {26}, Number = {0}, pages = {981-984}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2178-en.html}, eprint = {http://opsi.ir/article-1-2178-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Talebikhoshmehr, Mohammad and Parsanasab, Gholam mohammad and Gholamzadeh, Reza and Ghomi, Hami}, title = {Fabrication and characterization of bottle-like microcavity laser}, abstract ={In this paper Fabrication and characterization of bottle-like microcavity laser are reported. The active medium of this laser is Rhodamine (R6G) dye solved in Su-8 solvent that put around the optical fiber like a bottle. These lasers free space pumped with second harmonic Nd: YAG pulsed laser and output spectrum of laser collected as free space. These lasers have very low pump energy density threshold that has widely used in optical sensors.}, Keywords = {laser, whispering gallery mode, dye, microcavity}, volume = {26}, Number = {0}, pages = {985-988}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2233-en.html}, eprint = {http://opsi.ir/article-1-2233-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Shiri, Ramin and Fathollahikhalkhali, Taymaz and Shahrokhabadi, Hossein and Bananej, Alireza and Rezaei, Behrooz}, title = {Designing a near-infrared optical delay line based on the corrugated photonic crystals}, abstract ={In this study, a modern optical delay line based on the corrugated photonic crystals was introduced and characterized at Near-infrared region. Two types of photonic crystals with triangular and sinusoidal unit cells were investigated and compared. It is shown that a corrugated photonic crystal with sinusoidal cells can effectively slow down the optical pulses with central wavelength of 800 nm at the near-infrared region. Also, it is found that the average transmission of the sinusoidal structure at desired spectral region is larger than the triangular one. The finite-difference time-domain method was used to perform the numerical calculations.}, Keywords = {Corrugated photonic crystal, optical delay line, near infrared, optical pulse}, volume = {26}, Number = {0}, pages = {989-992}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1996-en.html}, eprint = {http://opsi.ir/article-1-1996-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Ahmadnezhad, Seyed bagher and Hajizadeh, Faegheh}, title = {Optical binding effect on optically rotated nanoparticle}, abstract ={When some particles are trapped with laser, scattered light from the particles interferes with direct light in the place of other particles and produces a new force between them, called as "Optical Binding." Constructing the two dimensions optical arrays are the products of optical binding. Here, the aim is to investigate the effect of scattered light from a particle on rotation speed and rotational Brownian motion of an optically rotated particle. In this study we provide a dual beam optical tweezers with the same wavelength and adjustable lateral distance between the trapped particles. One trap is stationary and circularly polarized, with the ability to rotate 400 nm gold nanoparticles, and the other trap is linearly polarized and is scanned at different distances relative to the rotating particle. The results show an oscillatory behavior of the rotational Brownian motion with decreasing amplitude followed by the oscillatory behavior of the nanoparticle temperature.}, Keywords = {Optical Binding, Optical rotation, Power Spectrum, Metallic nanoparticles, Nanoparticle Temperature}, volume = {26}, Number = {0}, pages = {993-996}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2002-en.html}, eprint = {http://opsi.ir/article-1-2002-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Naseri, Ahmad and Khalilzadeh, Javad and Eslamimajd, Abdollah and Darbani, Seyed Mohammad reza and Hemmati, Marziyeh and Akbari, Mohammad reza and Faridfar, Shahi}, title = {Possibility of Investigation bacterial samples using laser induced Breakdown spectroscopy}, abstract ={In this paper, bacterial samples were investigated using Laser Induced Breakdown Spectroscopy (LIBS). The bacteria studied include non-pathogenic Escherichia Coli and Bacillus Cereus. Bacterial samples were prepared on three form: tablet, powder and thin film on glass substrate. Bacteria samples spectrum were compared with glass substrate spectrum and elements of calcium, magnesium, , phosphorus, sulfur, chlorine, iron, manganese, copper, hydrogen, and CN molecular bonding were observed in the spectra of samples. The results of the spectroscopy investigation show that laser Induced Breakdown Spectroscopy is capable of identification and discrimination bacterial samples.}, Keywords = {Laser Induced Breakdown Spectroscopy, Bacteria, non-pathogenic, Molecular bond.}, volume = {26}, Number = {0}, pages = {997-1000}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2008-en.html}, eprint = {http://opsi.ir/article-1-2008-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Heidarpour, Isa and Hatami, Mohse}, title = {Gain saturation coefficient using the rate equations in a laser fiber composed of Chalcogenide(Ga5Ge20Sb10S65)}, abstract ={We study the gain saturation coefficient by using the rate equations for a fiber laser made of Chalcogenide (Ga5Ge20Sb10S65) material. Although there is no comprehensive theoretical model that can be used to accurate simulation of fiber laser pulse performance but by integrating the laser rate equations and obtaining a steady-state population, a combination of theoretical model is proposed. By simulating the gain factor which obtained from the fiber laser rate equations, the pump power and the signal power are also investigated. Thus, with this simulation, it can be seen that by increasing the length of the fiber containing Chalcogenide (Ga5Ge20Sb10S65), the output signal power is increased by increasing the input pump power. We have also studied the effective parameters of the fiber laser such as fiber length, pump power containing Chalcogenide (Ga5Ge20Sb10S65) material on the output power. We have shown by smaller input pump power in chalcogenide fiber laser we reache larger output power than silica one.}, Keywords = {Chalcogenide, gain saturation coefficient, laser fibber, rate equations, pump power and signal}, volume = {26}, Number = {0}, pages = {1001-1004}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2020-en.html}, eprint = {http://opsi.ir/article-1-2020-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {SepahbanShahgoli, Saba and Akhtariyanfar, Seyed Farshad and Shojaei, Saei}, title = {Engineering of Schottky Barrier Height in Graphene -Transition Metal Dichalgocenide-based Heterostructures}, abstract ={Transition metal dichalgocenides are new generated materials which became attractive for nano photonic and nano electronic applications, because of their unique properties. Also 2D materials like grapheme which is guasi metal, if combined with to 2D semiconductors, make vanderwaals heterostructures which have unpredictable behaviour. In our paper, we  theoretically study heterostructure based on graphene and tungsten disulfide that their contact make schottky barrier height. We reduced SBH from  to  electron volt by applying external field that results in increasing reverse saturation current from  to ampere. Therefore the enhancement of thermionic current, enables the capability of using these structures in detectors for increasing photoresponse and gain.}, Keywords = {Graphene, heterostructure, schottky barrier, transition metal dichalgocenide, two dimensional materials.}, volume = {26}, Number = {0}, pages = {1005-1008}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2051-en.html}, eprint = {http://opsi.ir/article-1-2051-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {ZamirAnvari, Javid and Alimohamadi, Masoud and Dehghani, Fahimeh}, title = {in quantum plasma The characteristics of phase shifts soliton waves}, abstract ={In this paper, the interaction properties of acoustic soliton waves in four-dimensional quantum dust plasma with solutions to the acoustic soliton waves are investigated and the initial phase changes, paths and phase transitions to It has been achieved. The effects of changing physical parameters have been studied. During the interaction, two individual impact waves are propagated by delays and drastic changes in phase shifts, paths, and phase transitions the results are of particular importance for experimental research. These results are also used to better understand the impact of acoustic soliton waves that may occur on laboratory plasma, space plasma, and other plasma environments. }, Keywords = {acoustic soliton waves, Phase shifts, qhantum plasma.}, volume = {26}, Number = {0}, pages = {1009-1012}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2086-en.html}, eprint = {http://opsi.ir/article-1-2086-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {}, title = {Ammonia Gas Optical Sensor Based on Hybrid Perovskite Quantum Dots}, abstract ={Recently, perovskite materials with high photoluminescence quantum efficiency have been considered as promising materials for optical applications. In this work, an ammonia gas optical sensor based on perovskite quantum dots for sensing ammonia gas is fabricated. Fortunately, the sensor shows photoluminescence quantum yield higher than 90% that is significantly more sensitive than the bulk structure.}, Keywords = {Photoluminescence Quantum Yield (PLQY), Perovskite, Quantum dots, Optical sensor}, volume = {26}, Number = {0}, pages = {1013-1016}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2229-en.html}, eprint = {http://opsi.ir/article-1-2229-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Nasehi, Mahsa and Moravvej-Farshi, Mohammad kazem and Ghanavi, Jalaledi}, title = {Synthesizing Elliptical Gold Nanoparticles for Glucose Sensing}, abstract ={We are presenting a novel method for the synthesis of anisotropic gold nanoparticles without the use of any toxic compounds. In this method, gold nanoparticles are synthesized via two simultaneous steps by mixing a reducing agent and a reaction mixture. Results of TEM indicate that the synthesized nanoparticles are anisotropic but uniform. The developed method is completely safe and can be used for the fabrication of biosensors for monitoring of blood metabolites such as glucose. Finally, we have studied the variation of absorbance spectra in the presence of glucose.}, Keywords = {Anisotropic nanoparticles, Gold nanoparticles, Glucose}, volume = {26}, Number = {0}, pages = {1017-1020}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2232-en.html}, eprint = {http://opsi.ir/article-1-2232-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Ghorbani, Sajad and Moradi, Mehrdad and Rajabi, Zahr}, title = {Investigation of optical and electrical properties of CZTS optical absorber layer in the presence of zinc and zinc sulfide precursors}, abstract ={The structural, optical and electrical properties of the CZTS optical absorber layer deposited by vacuum thermal evaporation method using two different precursors of zinc sulfide (ZnS) and zinc (Zn) were investigated. In the first sample, the CZTS optical absorber layer was deposited as ZnS/Cu/Sn/S multilayer. The second sample was deposited similar to the first sample, but zinc metal precursor was used instead of zinc sulfide precursor. The structural, optical, electrical properties of CZTS optical absorber layer were investigated by SEM and XRD analysis, optical-reflectance spectroscopy and solar spectrum simulator, respectively. The results showed that the use of zinc metal precursor instead of zinc sulfide improves the Surface uniformity and crystallinity of the CZTS optical absorber layer, reducing the formation of MoS2 intermediate layer, creating a diode (Schottky) contact between the optical absorber layer and the aluminum deposited on it and reducing the optical band gap of the optical absorber layer.}, Keywords = {Optical absorber layer, CZTS, MoS2, Precursor, Zinc, Zinc sulphide.}, volume = {26}, Number = {0}, pages = {1021-1024}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2172-en.html}, eprint = {http://opsi.ir/article-1-2172-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Jafarzadeh, Hamed and Hosseini, Roghaye and Alesheikh, Sar}, title = {Investigation of Optical absorptionin Two-Dimensional GY5 Graphyne nanostructurefor two parallel and perpendicular polarized light}, abstract ={In this paper we have investigated some electronic and optical properties of GY5 graphyne structure. Investigations have been done by first principle calculation based on density functional theory.Electronic band structure shows zero band gap and Dirac coneat Fermi energy. Investigation of optical absorption for energies less than 12 eV represents four peaks for parallel polarization and there were not any absorption for higher energies. There was only one peak for perpendicular polarization. Electric field doesn’t have any impact on the band structure and optical absorption.}, Keywords = {Carbon nanostructure,Density functional theory, Graphyne, GY5,Optical absorption.}, volume = {26}, Number = {0}, pages = {1025-1028}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2180-en.html}, eprint = {http://opsi.ir/article-1-2180-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Mahinroosta, Tayyebeh and Hamidi, Seyyedeh mehri}, title = {Strong Plasmon-Exciton Coupling in Au nanodisk @ J-aggregate Layer structure}, abstract ={The plasmon-exciton coupling, termed as the coherent energy exchange between the plasmonic and exciton modes, creates two hybrid modes called plexciton. In this paper, we investigate the plasmon-exciton interaction in a hybrid nanostructure composed of Au nanodisk @ J-aggregate layer. The absorption spectra of the structure were simulated for the thickness variations of the excitonic layer from 10 to 140 nm using the FDTD method. The proposed structure yields a Rabi splitting value of about 112.2 mV which satisfies the condition of a strong coupling regime.}, Keywords = {Plexcitonic, J-aggregate, strong coupling regime, Rabi splitting}, volume = {26}, Number = {0}, pages = {1029-1032}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-1942-en.html}, eprint = {http://opsi.ir/article-1-1942-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Khorram, Darya and Shooshtari, Leyla and Samadpour, Mahmoud and Esfandiar, Ali}, title = {Fabrication of three cationic halide perovskite-based photodetectors with blocking & optimized mesoporous TiO2}, abstract ={In this study, perovskite-based photodetectors were fabricated with mixture of FA, MA and Cs cations.  Reaching to the best structure, we deposited mesoporous TiO2 layer with different thicknesses on the substrates. Investigations show that the best performance of the photodetector is achieved by the presence of a barrier layer and two layers of mesoporous TiO2. This structure transmits a current of 126 nA at 3 V under blue light illumination, which shows a two-fold increase over the current obtained from the same structure without the presence of a barrier layer. Also, the optimum structure reflects the steady current after 8 minutes under on/off switching irradiation with the blue light and an on/off interval of 20 s.}, Keywords = {Photodetector, perovskite, TiO2, mesoporous, block}, volume = {26}, Number = {0}, pages = {1033-1036}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2024-en.html}, eprint = {http://opsi.ir/article-1-2024-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Pourgorban, Nayyer and Moslemi, Fatemeh and Jamshidi-ghaleh, Kazem}, title = {One-Way Absorption Behavior in Ternary PC Containing Graphene and MoS2 Defect Layer}, abstract ={Graphene and MoS2 monolayers have little absorption due to their very low thickness. By introducing those materials in structure of a photonic crystal (PC), can increase the absorption. In this work, a PC structure with ternary periodicity in the form of (ABG)n CMoS2C (GBA)m is proposed, where A, B and C layers are the dielectric materials, G is denoting the Graphene and the segment CMoS2C is introduced as the defect layer. The absorption spectrum of the structure is investigated using the transfer matrix method. The results show that this structure has the one-way absorption in the visible spectral region. The effect of the defect layer location, the polarization and the direction of the incident field on one-way absorption behavior is studied and optimized. The location of the absorption mode is independent of the polarization type but its peak intensity and width in TE polarization dependent on incident direction varies by angle of incident. It should be mentioned that incorporating of graphene yield to enhancement of the absorption.}, Keywords = {Ternary photonic crystal, MoS2 monolayer, One-way absorption, Graphene}, volume = {26}, Number = {0}, pages = {1037-1040}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2043-en.html}, eprint = {http://opsi.ir/article-1-2043-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Naziri, Pouriya and KhademSadigh, Mahsa and Zakerhamidi, Mohammad sadegh and Ranjkesh, Amid and Yoon, Tae hoo}, title = {Study of optical- electrical properties of cholesteric and polymer-stabilized cholesteric Liquid crystals for smart window application}, abstract ={In this paper, we propose cholesteric and polymer-stabilized cholesteric liquid crystals (LCs) samples which give different responses in the presence of external electric field for smart windows application. the cholesteric LC sample can easily switch between cholesteric and isotropic  phases by applying a voltage and, the polymer-stabilized cholesteric LC sample due to the stability of the structure in the polymer can remain in the cholesteric phase for much larger voltages.}, Keywords = {Bragg reflection,Cholesteric liquid crystal,Helical,Polymer-stabilized cholesteric liquid crystal,Smart window}, volume = {26}, Number = {0}, pages = {1041-1044}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2060-en.html}, eprint = {http://opsi.ir/article-1-2060-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Habibi, Milad and Jahangiri, Fazel}, title = {Designing a porous hybrid core photonic crystal fiber with flattened dispersion for terahertz waves propagation}, abstract ={In this paper we design a photonic crystal fiber with hybrid porous core for optimal propagation of THz waves, then we investigate the propagation properties of the porous waveguide. Simulation results reveal that the presented design leads to pronounced decrease of dispersion and loss. By controlling the air filling fraction inside the core, the disperstion of the waveguide is flattened and reaches to zero. The obtained propagation in proposed design provides a waveguide structure with tunable transmission and efficiency for THz waves.}, Keywords = {terahertz, photonic crystal fiber, dispersion , waveguide.}, volume = {26}, Number = {0}, pages = {1045-1048}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2062-en.html}, eprint = {http://opsi.ir/article-1-2062-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Rajai, Payman and Amjadi, Ahm}, title = {The Impact of Refractive Index on the Fourier Domain Optical Coherence Tomography of Multi-layer Systems}, abstract ={In a Fourier Domain Optical Coherence Tomography (FD-OCT) system, the refractive index profile is the contrast mechanism that allows one to determine the inner structure of the object. When the refractive index variations inside the object are small, FD-OCT can precisely reconstruct the object’s internal structure. With increasing the object’s refractive index and internal reflections, phantom interfaces are created in the final image that sometimes is hard to be differentiated with the real interfaces. In this article, we examine a two-layer object and show that when the refractive indices exceed 1.45, the FD-OCT imaging system is unable to interpret the real interfaces of the object.}, Keywords = {Optical Coherence Tomography, Fourier Domain, refractive index, Multi-layer Systems.}, volume = {26}, Number = {0}, pages = {1049-1052}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2143-en.html}, eprint = {http://opsi.ir/article-1-2143-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Imani, Aref and Najafi, Somayeh and Massudi, Rez}, title = {Thermal stress reduction of end-pumped Nd: YAG laser crystal by adjusting the crystal position in the holder}, abstract ={In this paper, the stress induced by the thermal gradient in the end-pumped Nd: YAG laser crystal is investigated to reduce the stress. Our simulation results show that the position of the crystal inside its holder has a significant impact on the maximum induced stress. Accordingly, the optimum position of the crystal in the holder is first introduced and, it is shown, induction stress reaches the lowest value at 400 microns outside the holder that this position is independent of the pump laser power. It is also proven that optimum positioning is more important for chamfered laser crystals.}, Keywords = {End-pumped, Nd:YAG crystal , Solid state lasers, Thermal stress}, volume = {26}, Number = {0}, pages = {1053-1056}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2177-en.html}, eprint = {http://opsi.ir/article-1-2177-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Ahmadi, Davood and Bozorgzadeh, Forough and Sahraei, Mostaf}, title = {Design of fiber bragg grating filter based on photonic crystal microcavity doped with quantum-dots molecules(QDM)}, abstract ={We propose a new model for fiber Bragg grating filter based on one-dimensional defective photonic bandgap (PBG) structures, which operates within the Telecom windows. The device is realized in an asymmetric photonic crystal microcavity with the defect layer placed in the center of the structure. It is shown that depending on the gate voltage value and as a result of tunneling parameter, the adsorption and dispersion properties change with the effective voltage change. By optimizing the effective parameters, optical filtering with telecommunication spectral bandwidth is possible. Also, tuning the filtering wavelength and the number of guided modes is performed by changing the properties of PC’s defect layer. The effect of the incident angle of the probe field on the transmittance spectra is calculated.}, Keywords = {photonic crystal microcavity, quantum-dot molecules, defect layer, tunneling, absorbtion &dispersion}, volume = {26}, Number = {0}, pages = {1057-1060}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2159-en.html}, eprint = {http://opsi.ir/article-1-2159-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Farahmandzadeh, Farzad and Molaei, Mehdi and Karimipour, Masou}, title = {CdTe/ZnSe core-shell QDs: synthesis via a photochemical method and investigating optical properties}, abstract ={In this research, CdTe QDs prepared using a microwave activated approach. Then via a simple UV-assisted approach CdTe QDs were shelled by ZnSe. CdTe QDs indicated a band edge emission which it indicate a red shift after ZnSe shell growth confirming formation of a type II core-shell structure. Synthesized QDs were characterized by means of XRD, FESEM, HRTEM, EDS, UV–vis and PL analysis.}, Keywords = {CdTe/ZnSe, QDs, Photoluminescence, Core-Shell, Photo luminescent NPs}, volume = {26}, Number = {0}, pages = {1061-1064}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2092-en.html}, eprint = {http://opsi.ir/article-1-2092-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Bahmeh, Zahra and Zangeneh, Hamid rez}, title = {Atmosphere modeling and pulse laser radar transmission spectrum simulation in cloud clutter}, abstract ={Performance of pulse laser radar systems is extremely influenced by improper conditions of weather and different kinds of clutter (cloud, fog, smog and so on). Since laser pulses attenuate during propagation through cluttered environment therefore performance of these systems is dependent on laser wavelength. In this paper firstly, we use PCModWin4 software for modeling upper layers of atmosphere then electromagnetic wave transmission spectrum in cloud clutter are drawn in different wavelengths and the best wavelength for favorite distance of propagation is calculated and chosen. To find an optimum wavelength with a transmission close to one for a distance of propagation less than 100 meters (useful in robotic, laser guidance, detection and so forth) is purpose of this research. It is derived that the best wavelength for laser pulses propagation at this distance is 905 nanometers. The laser light in this wavelength is not visible and this is of foremost importance in navigation and aviation, meanwhile being commercially economical.}, Keywords = {Pulse laser radar, Clutter, Optimum wavelength, High transmission, Low absorption}, volume = {26}, Number = {0}, pages = {1065-1068}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2074-en.html}, eprint = {http://opsi.ir/article-1-2074-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Hosseini, Mehri-Alsadat and Ranjbar, Mehdi}, title = {Fabrication of MoO3 Film by Flame Vapor Deposition for Plasmonic Hydrogen Gas Sensing Application}, abstract ={Nowadays, the gasochromic coloration of transition metal oxide has become more interesting for optical hydrogen sensing. This paper reports hydrogen sensing by Pd/MoO3 films deposited on glass substrates by an atmospheric flame technique at substrates which were kept at room temperature. A β-MoO3 crystallite phase was detected for the flame deposited oxide layers. When Pd/MoO3 films were exposed to hydrogen at 150 ° C, the sample’s color changes to pale blue. After hydrogenation, no structural phase change is observed in the X-ray diffraction pattern. FESEM images shows a web like agglomeration of small particles (<10 nm). A broad LSPR absorption peak appeared in NIR region due to surface plasmon resonance after hydrogenation. The plasmonic absorption band of molybdenum oxide shifts to shorter wavelengths as the hydrogen gas concentration increases. This spectral variation of molybdenum oxide can be used as a plasmonic hydrogen gas sensor.}, Keywords = {Flame, MoO3, Plasmonic, Hydrogen gas, Sensor}, volume = {26}, Number = {0}, pages = {1069-1072}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2191-en.html}, eprint = {http://opsi.ir/article-1-2191-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Shahraki, Hamid reza and Jamshidiseresht, Mohsen and Kazemi, Shahram}, title = {Design of a new 44-pass system for using in thin-disk lasers’ pumping module}, abstract ={In thin disk lasers, a few percent of pump energy is absorbed when it passes through the disk due to its low thickness. One method to enhance absorption efficiency is increasing the number of pump light’s passes. The most common procedure providing multi-pass is placing disk in the focal plane of a reflective 4f-imaging system with unitary magnification. In that case, unabsorbed light transmits through disk repeatedly to rise absorption efficiency. More pump passes, also, open the way for usage of active material with low absorption which results in better beam quality of disk laser. Here, a 44-pass system has been simulated and designed able to improve optical efficiency about 12 percent compared to 16-pass system.}, Keywords = {44-pass system, thin-disk pump system, imaging system}, volume = {26}, Number = {0}, pages = {1073-1076}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2192-en.html}, eprint = {http://opsi.ir/article-1-2192-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Shiri, Ramin and FathollahiKhalkhali, Taimaz and Shahrokhabadi, Hossein and Bananej, Alireza and Rezaei, Behrooz}, title = {Properties of photonic nanojet made of circular and elliptical dielectric cylinders}, abstract ={In this paper, photonic nanojets are achieved using circular and elliptical dielectric cylinders in air background. Therefore, for obtaining high intensity and large focal length photonic nanojets, using high-resolution finite difference time domain method, the optical properties of obtained nanojets are studied for all possible geometrical parameters. Numerical results show that the field intensity of circular photonic nanojet is higher than the elliptical one, while the focal length of elliptical photonic nanojet is greater than that of circular one. These results can be helpful in designing advanced photonic components such as ultra-sensitive particle sensors.}, Keywords = {photonic nanojets, finite-difference time-domain method, intensity, focal length}, volume = {26}, Number = {0}, pages = {1077-1080}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2193-en.html}, eprint = {http://opsi.ir/article-1-2193-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Dehghan, Tarane and Sadeghzadeh, Alireza and Zargari, Siavash and Faeghi, Pooya and Jafari, Kian and Matloub, Samiye}, title = {Design, analysis and simulation of a Ring Resonator Based bioMEMS sensor by using a photonic crystal}, abstract ={This paper presents the design of a photonic crystal ring resonator based bio MEMS sensor to detect divergent biochemical molecules. As the biochemical molecules have exclusive refractive indices, the resonant wavelength, output transmission and other parameters are varied from one chemical to the other. Two different structures are surveyed to choose the best one.}, Keywords = {sensor, Photonic crystal, refractive index, resonant wavelength, MEMS}, volume = {26}, Number = {0}, pages = {1081-1084}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2194-en.html}, eprint = {http://opsi.ir/article-1-2194-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Hamzeh, Golshan and Razaghi, Mohammad and RasoulzadehZali, Aref}, title = {The performance Optimization of Fano laser by modifying the structure of the nanocavity}, abstract ={In this paper, we analyze the performance of the photonic crystal Fano laser. Our aim is to investigate the effects of modifying the nanocavity structure by changing the air holes radius around nanocavity on the Fano laser performance. 3-D Finite Element Method is used to solve the governing equations of the Fano laser. The Fano laser performance the air holes radius of 109 nm was experimentally reported recently. To achieve optimized output pulse, the air holes radius around nanocavity is changed from 50 nm to 130 nm. This optimized pulse should have standard Gaussian pulse shape, with minimum achievable full width at half maximum (FWHM) and maximum transmission. Based on our simulation the optimized Fano laser performance for the air holes radius around nanocavity of 80 nm is observed. For this radius, the FWHM, maximum transmission and correlation with standard Gaussian pulse, 22.878GHz, 0.9578 and 0.9971 are respectively computed.}, Keywords = {Fano laser, air hole, transmission, reflectivity, nanocavity}, volume = {26}, Number = {0}, pages = {1085-1088}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2195-en.html}, eprint = {http://opsi.ir/article-1-2195-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Mardani, Khadijeh and Parvin, Parviz and Bavali, Ali}, title = {Fluorescence self-quenching of Doxorubicin at different angles in aqueous solutions}, abstract ={In this study, the fluorescence self-quenching of Doxorubicin (DOX) was investigated by Laser-induced fluorescence (LIF). Furthermore, it was demonstrated that the fluorescence quenching of DOX strongly depends on the detection angles. In fact, DOX concentration and the interplay between Stokes shift rate and the overlapping between absorption/emission spectra of the chemo-drug are taken into account as the major parameters to form the angular distribution.}, Keywords = {Chemo-drug, Laser-induced fluorescence, self-quenching, Stern-Volmer formalism}, volume = {26}, Number = {0}, pages = {1089-1092}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2196-en.html}, eprint = {http://opsi.ir/article-1-2196-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Madadi, Zahra and Abedi, Kambiz and Darvish, Ghafar and Khatir, Mehdi}, title = {Refractive Index Sensing by a Narrow-Band Perfect Absorber based on Plasmonic Resonances}, abstract ={In this paper, a plasmonic perfect absorber based on the metal-insulator-metal structure has been designed as a biosensor. Simulation results performed by the 3D FDTD numerical method show that the absorption spectrum of the proposed biosensor has a narrow-band resonance peak in the wavelength range of 580-640 nm. After the perpendicular incidence of a plane wave light within wavelength range mentioned, the resonance wavelength shifts from λ=600.1 nm to λ=614.8 nm when the analyte refractive index increases from n=1 to n=1.1. The sensor,s sensitivity (S), full width at half maximum (FWHM) and the figure of merit (FOM) were obtained 147 nm/RIU, 9.6 nm, and 15.3, respectively. The analysis of the electric field at certain cross-sections of the absorber shows that the plasmonic resonances are stimulated at the insulator-metal and analyte-metal interfaces, and by amplifying the field at these surfaces, the sensing process is possible in the very small wavelength range.}, Keywords = {Meta-Insulator-Metal, Narrow-band, Plasmonic Perfect Absorber, Refractive Index, Biosensor,}, volume = {26}, Number = {0}, pages = {1093-1096}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2197-en.html}, eprint = {http://opsi.ir/article-1-2197-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {JamshidiSeresht, Mohsen and Shahraki, Hamid reza and Aghaie, Mohammad and Kazemi, Shahram}, title = {Design of refractive laser beam shaper to produce flat-top profile irradiance in order to use in pumping system of thin disk lasers}, abstract ={One of the most prominent parameters in thin disk lasers’ performance is their pump profile making temperature gradient in disk. This phenomenon is able to distort laser’s wavefront, especially in high power operation, by two physical properties of disk including temperature-dependent refractive index and thermal expansion. It is clear that as the pump profile uniformity (super-Gaussian coefficient) increases, the amount of temperature gradient and wavefront distortion will proportionally reduce. In this paper, a refractive laser beam shaper has been simulated and designed in order to generate a circular flat-top profile on disk surface with 12.48 mm diameter and super-Gaussian coefficient of 16.4. The system has been, also, experimented practically that its results were similar to numerical ones, the spot diameter and super-Gaussian coefficient were 12.42 mm and 18.6, respectively.}, Keywords = {Beam shaper, Flat-top profile, Pumping system of thin disk laser}, volume = {26}, Number = {0}, pages = {1097-1100}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2198-en.html}, eprint = {http://opsi.ir/article-1-2198-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Abazari, Mohammad and Radmard, Saeid and Kazemi, Shahram}, title = {Study and simulation of Wavelength Beam Combining in Thin Disk Lasers}, abstract ={Todays beam combining is among the most popular techniques for attaining high powers with simultaneously good beam quality. Due to the inherent limitations with the laser gain medium and also with the optical elements in the laser resonator, it is not feasible to achieve a desirable high powers and qualities with a single laser, and there is a power limit, that it is not possible to go beyond, and major difficulties, like thermal effects, starts to degrade the power and quality. Beam combining is a solution to this problem. In this study, we have simulated the method of spectral beam combining. Findings of our simulation indicate the power and brightness scaling of the combined beam with the number of component beams. The brightness of the combined beam is about twice that of the individual beams. On the other hand, the quality of the combined beam is within acceptable range, and is comparable to the qualities of the constituent beams.}, Keywords = {Brightness, wavelength beam combining, blazed grating, diffraction,}, volume = {26}, Number = {0}, pages = {1101-1104}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2199-en.html}, eprint = {http://opsi.ir/article-1-2199-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Farmani, Ali and Mir, Ali and Behzad-far, Fatemeh and Jani-pour, Fatemeh and Hosseini, Elahe and Nasiri, Elahe and Hasanvand, Jav}, title = {Modelling of a Tunable Graphene Plasmonics Polarization Beam Splitter}, abstract ={The analysis, and realization of a tunable polarization beam splitter based on the plasma dispersion effect at near infrared frequencies are presented. By utilizing graphene as a tunable optical material, various types of splitter including TE and TM are implemented. The structure considered here supports graphene plasmons whose dispersion properties can be harnessed by applying an external voltage to the graphene. By utilizing this feature, coupling of the incident light to the graphene plasmons of the structure is used to enhance the extinction ratio of the proposed structure. The output extinction ratio reached to the values as high as 21 dB and the footprint was reduced to 1290nm×4mm×2mm. This provides a path for development of novel practical on-chip applications such as plasmonic rotator devices.}, Keywords = {Graphene Plasmonics, Polarization Beam Splitter,}, volume = {26}, Number = {0}, pages = {1105-1108}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2200-en.html}, eprint = {http://opsi.ir/article-1-2200-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Ansari, M. and Moravvej-Farshi, M. K. and GordiArmaki, M.}, title = {Relative Humidity Sensor Based on Tapered Optical Fiber Coated with Silica-Gel}, abstract ={We have fabricated and characterized a relative humidity (RH) sensor, by tapering the mid-region of a piece of multimode-fiber (MMF) and coating it with a layer of silica-gel as the sensing layer. The experimental results show that the device sensitivity depends on the presence of silica-gel layer. The sensor response to the fluctuations of relative humidity in the environment is determined through measuring the changing in fiber transmission power. The experimental results also show that the device sensitivity increases as the diameter of the fiber, in the tapered region, decreases down to a certain size. The same results show that the highest linear sensitivity of 0.39 dB/%RH can be achieved for a tapered region of the MMF with 4-μm waist diameter coated with silica gel.}, Keywords = {humidity sensor, optical fiber sensor, tapered optical fiber}, volume = {26}, Number = {0}, pages = {1109-1112}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2215-en.html}, eprint = {http://opsi.ir/article-1-2215-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Rahimof, Yasmin and DastjaniFarahani, Abbas and Ghaforifard, Hassan and Habibiyan, Hamid rez}, title = {Optical Biosensors Based on Bezier Micro-ring Resonators}, abstract ={Nowadays, many researches have been conducted on utilizing optical biosensors but main challenges regarding this type of biosensor are sensitivity and detection limit. In this research design and simulation of optical biosensor based on micro Bezier ring resonator were studied, which includes a ring resonator with a bus waveguide. Finally, the optimum quality factor has been obtained via Taguchi algorithm, in which optimum values of geometrical parameters are calculated while the ring radius is fixed. The best optimized structure is acquired to be Bezier ring resonator with a Bezier number of 0.4, a gap of 250 nm, height of 250 nm and width of 480 nm, which yields a quality factor of 66236, and an FSR of 28.8 nm. This structure has 4.43 times more quality factor in comparison with the other type of Bezier ring resonator.}, Keywords = {Label-free sensor, Micro-ring resonator, Optical biosensor, Quality factor, Taguchi optimization}, volume = {26}, Number = {0}, pages = {1113-1116}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2201-en.html}, eprint = {http://opsi.ir/article-1-2201-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Dastjanifarahani, Abbas and Rahimof, Yasmin and Ghaforifard, Hassan and Habibiyan, Hamid rez}, title = {Design and simulation of optical integrator}, abstract ={Photonic signal processing has been considered a promising solution to overcome the inherent speed limitations of its electronic counterparts. Photonic integrator is one of the fundamental blocks of photonic signal processing. Recently, the implementation of a photonic temporal integrator has been widely investigated, such as the implementation using a ring resonator. One of the most important characteristic parameters of a photonic integrator is the integration time. In this paper, a silicon ring resonator with a radius of 3 microns was designed as a photonic integrator, then by using the Taguchi optimization method and changing the resonator dimensions including the gap, width and height of waveguides in 5 different levels were tried to improve the integration time; finally the optimal integration time was achieved 13.1 ps.}, Keywords = {Integration time, Photonic integrator, Photonic signal processing, Ring resonator, Taguchi optimization.}, volume = {26}, Number = {0}, pages = {1117-1120}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2202-en.html}, eprint = {http://opsi.ir/article-1-2202-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Salami, Pooria and Yousefi, Leil}, title = {Converting Evanescent Waves into Propagating Modes Using Holography}, abstract ={In order to obtain information about subwavelength features of an object, it is necessary to detect evanescent waves scattered from the object, which is not possible in far field region. Here, based on holography concept, we show theoretically that we can record evanescent waves in a photoresist layer and apply a shift in their spatial frequencies. This will result in evanescent to propagating wave conversion and can be used for detecting information about subwavelength features of the object in far field.}, Keywords = {Subwavelength imaging, interference, diffraction limit.}, volume = {26}, Number = {0}, pages = {1121-1124}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2203-en.html}, eprint = {http://opsi.ir/article-1-2203-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {NoroozianAlam, Shahab and Zubialevich, Vitaly and Ghafary, Bijan and Parbrook, Peter}, title = {Optical and Compositional properties of Indium Aluminium Nitride as a New Active Material for Light Emitting Applications}, abstract ={Among all III-Nitride materials Indium Aluminium Nitride (InAlN)  is an important but challenging material system used in many applications including InAlN/GaN high electron mobility transistors, InAlN/GaN Bragg reflectors and InAlN-based photodetectors. Despite this, a significant discrepancy (±0.3 eV) exists in the band-gaps reported for even the most studied and technologically relevant compositions, around the lattice matched condition to GaN. For accurate estimation of band-gap across the whole composition range, a detailed data set for the lowest indium content region is needed, but has not been available. Here InAlN/AlGaN multiple quantum wells (MQWs) emitting between 300 and 350 nm have been prepared by metalorganic organic chemical vapor deposition (MOCVD) on planar AlN templates. Also we studied InAlN epitaxial layers grown on AlN by MOVPE at different temperatures and determined their band-gap Eg by means of photoluminescence excitation spectroscopy.}, Keywords = {Indium Aluminium Nitride, InAlN, Band-Gap, Luminescence, Epitaxy, MOCVD}, volume = {26}, Number = {0}, pages = {1125-1128}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2204-en.html}, eprint = {http://opsi.ir/article-1-2204-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Ghodsi, Hamed and Rastegarpashaki, Elahe and Amjadi, Ahmad and Rajai, Peym}, title = {A novel method for decoupling diffraction coefficient and thickness in an optical coherence tomography imaging system}, abstract ={Optical coherence tomography in the Fourier domain due to its non-invasive nature and high resolution has become a routine tool in ophthalmology for detection and control of many diseases in the last two decades. In this paper, a novel method based on the image contrast the scans at the interfaces has been proposed and theoretically explained for decoupling refractive index and thickness of the layers. Also, error analysis has been done on this method which results in mean error lower than 2% on the generated reference data. The proposed method also has been checked for sensitivity to the background and foreground refractive indexes. In case of 10% error in background and foreground refractive indexes, mean error in calculation of the refractive index and thickness of the layers are less than 2.5%. Additionally, numerical procedure of this method has been explained and applied to several scan images of the retina and the resulted image has been illustrated.}, Keywords = {Optical coherence tomography, Refractive index, Fourier domain OCT, Medical imaging, Ophthalmology}, volume = {26}, Number = {0}, pages = {1129-1132}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2205-en.html}, eprint = {http://opsi.ir/article-1-2205-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Farnood, Ameneh and Ranjbar, Mehdi and Salamati, Hadi}, title = {Plasmon coupling effect of Pd/Au thin films for sensing hydrogen gas}, abstract ={In this study, nanoislands gold thin films were fabricated by pulsed laser deposition (PLD) method on quartz substrates at different substrate temperatures of 25, 300, 450 and 600 °C. A thin (4-5 nm) Pd film as hydrogen catalyst over-layer was sputter deposited on Au films. UV-Vis spectrometry showed localized surface plasmon resonance (LSPR) absorption shift for RT, 300, 450 and 600 °C substrate temperature. These spectral variations were mainly attributed to the layer morphology based on plasmon-coupling effect. Transmittance spectra at various hydrogen concentration of 0, 0.2, 0.5, 1, 2, 4, 6, 8 and 10% revealed that the layer created at room temperature provides the most spectral shift among other samples. Overall, we showed that plasmonic coupling of PLD derived Au thin films is a suitable tool for accurate detection of hydrogen.}, Keywords = {Au thin films, pulsed laser deposition, localized surface plasmon resonance, plasmon coupling and hydrogen sensing.}, volume = {26}, Number = {0}, pages = {1133-1136}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2206-en.html}, eprint = {http://opsi.ir/article-1-2206-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Gholipour, Alireza and NasrollahiMoghaddam, Fereshteh and Mehrshahi, Esfandiar}, title = {Calculating Dyadic Green’s Function of SIGO Formulation Using Rapid Summation Methods for Analyzing Rectangular Plasmonic Nano-Resonators}, abstract ={To analyze the nano-dipole antennas using Surface Impedance Generating Operator (SIGO), we need to compute the dyadic Green’s functions that are represented in triple summations. For successful implementation of SIGO using the MoM, fast computation of these series is necessary. Unfortunately, these series converge slowly, especially when the observation points come close to the source points. Ewald sum technique is used to improve the convergence rate of these series. On this paper, we optimize the Ewald method for the problem of plasmonic nano-dipole. This problem differs from those that normally are solved by Ewald sum technique in two main aspects. First, because SIGO is a kind of surface integral equation (SIE) method, both source and observation points are located on the boundary rather than inside the cavity. Second, the materials of nano-dipole arms, which are metals at optical frequencies, are lossy with negative index. These conditions entail that special measures are taken to apply rapid summation techniques effectively. It is shown that by controlling the parameters of rapid summation techniques, good convergence rate is achieved.}, Keywords = {Surface Impedance Generating Operator (SIGO), Method of Moment (MoM), Plasmonics, Nano-Antenna, Dyadic Green Function.}, volume = {26}, Number = {0}, pages = {1137-1140}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2207-en.html}, eprint = {http://opsi.ir/article-1-2207-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Alee, Soheil and Ahmadi, Morteza and Soltanmohammadi, Mina and Asemi, Morteza and Ghanaatshoar, Maji}, title = {Preparation of quaternary Cu2ZnSnS4 (CZTS) absorber Layer through DC sputtering of Cu, Zn, and Sn metallic targets and post-deposition sulfurization}, abstract ={Cu2ZnSnS4 is an intriguing absorber layer in thin-film photovoltaics. Solar cells based on kesterite have made considerable progress over the past few decades. In this work, we present the fabrication of bare Cu2ZnSnS4 absorber layer through DC sputtering of Cu, Zn and Sn metallic targets with a post-sulfurization step which reached atomic ratios of 17.13%, 14.21%, 12.25% and 56.41% for Cu, Zn, Sn, and S, respectively, leading to compositional ratios of 1.16 and 0.65, respectively for Zn/Sn and Cu/(Zn+Sn). The optical bandgap of the layer was 1.48 eV. This method is a versatile and industrial technique that provides good control over the material stoichiometry and is suitable for large scale production. The CZTS layer prepared in this work demonstrates high purity, good crystallographic and desirable optical features which are confirmed by EDS, XRD, Raman measurements and UV-Vis analysis.}, Keywords = {Cu2ZnSnS4, Thin-film solar cells, DC magnetron sputtering}, volume = {26}, Number = {0}, pages = {1141-1144}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2208-en.html}, eprint = {http://opsi.ir/article-1-2208-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Shahraki, Mojtaba and Ghadrdan, Maji}, title = {Absorption Improvement in Core-Shell c-Si/a-Si Nanowire Array Solar Cells}, abstract ={In this paper, the optical properties of laterally oriented core-shell nanowire silicon solar cells (NWSCs) are optimized. The optimum structure consists of an array with non-uniform hexagonal nanowires (NWs). Each NW is constructed from an amorphous silicon layer sandwiched between two crystalline silicon layers. In order to improve the light absorption and short circuit current density (Jsc) of NWSC, particle swarm optimization (PSO) algorithm is used to optimize the geometrical parameters of NWs. It is shown that the optimized structure has advantageous performance in terms of light absorption and Jsc.}, Keywords = {Absorption, Amorphous Silicon, Crystalline silicon, Core-Shell Nanowires,}, volume = {26}, Number = {0}, pages = {1145-1148}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2209-en.html}, eprint = {http://opsi.ir/article-1-2209-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Vatani, Sare and Taleb, Hussein and Moravvej-Farshi, Mohammad Kazem}, title = {Optical modulation based on a graphene-loaded 2D grating}, abstract ={To design a narrow-band reflective optical modulator with large modulation depth, we have used a graphene-loaded 2D grating in the critical coupling condition, for the first time. The simulation results show that the designed structure can achieve a modulation depth of more than 80% over a ~70 pm bandwidth. Moreover, to study the effects of the possible fabrication errors on the resonant wavelength, we have investigated the effects of minute changes in the grating period (Λ) and its teeth dimensions. The results show that a 1-nm error in the Λ results in an about 1.2 shift in the resonant wavelength. Whereas, the effects of the same errors in the grating teeth dimensions are much less significant. These results can pave the way for obtaining narrow bandwidth optical modulators with high modulation depth for optical communication applications.}, Keywords = {Optical Modulator, Graphene, Modulation Depth, Insertion Loss}, volume = {26}, Number = {0}, pages = {1149-1152}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2216-en.html}, eprint = {http://opsi.ir/article-1-2216-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Ghaffari, Amir hosein and Zandi, Hesam}, title = {Phase Synchronization of Generated Terahertz Waves from Stacked Intrinsic Josephson Junctions in Bi2212 Superconductors Utilizing Photonic Crystals}, abstract ={Power enhancement of generated terahertz waves from a pair of stacked Intrinsic Josephson Junctions (IJJ) in high-temperature superconductor, Bi2212, is investigated. We successfully could compensate the power attenuation with phase manipulating structures of propagating waves, synchronizing the phase of sources. In this paper, using zero-refractive index photonic crystals for this purpose is analyzed and demonstrated with high precision. After introducing Bi2212 terahertz emitters, and zero-refractive index photonic crystals, we numerically compute proposed zero-refractive index photonic crystal modes. Furthermore, we model a waveguide with two sources with and without the phase shifting structure. Results show that this idea could be promising for applied purposes.}, Keywords = {Intrinsic Josephson Junctions, High-Temperature Superconductors, Zero-Refractive Index Photonic Crystals, Terahertz Source}, volume = {26}, Number = {0}, pages = {1153-1156}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2210-en.html}, eprint = {http://opsi.ir/article-1-2210-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Mehdipour, Mohammadreza and Ahmadi, Vahid and Poursalehi, Rez}, title = {Design of a Backscatter-Free Waveguide Based on Photonic Topological Insulators}, abstract ={Photonic Topological Insulators are systems where the broken time reversal symmetry gives rise to protected edge modes that support backscatter-free and one-way propagation of electromagnetic waves by opening non-trivial bandgaps. In this study we investigate a one-way topologically protected waveguide in the frequency range of f=6.0 to 8.0 GHz. The time reversal symmetry is broken by an applied magnetic field in the z direction. We show that the waveguide propagates the light in only one direction that can be controlled by the applied magnetic field and no backscattering is present in the waveguide which results in a near 100% transmission of light to the output.}, Keywords = {Photonic Topological Insulators, Photonic Crystals, One way Propagation, Edge Modes}, volume = {26}, Number = {0}, pages = {1157-1160}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2211-en.html}, eprint = {http://opsi.ir/article-1-2211-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Mirsalehi, Mitra and Kavehvash, Zahra and Fardmanesh, Mehdi}, title = {Design of a wideband, high-gain and high-directivity THz Vivaldi antenna}, abstract ={In this paper, a wideband Vivaldi antenna is designed for the frequency range of 0.5-3 THz and simulated by a software package based on the finite element method.  The antenna has dimensions of 432µm × 400µm ×10.2µm, its substrate is quartz, and the conducting layers are made of gold. The designed antenna is highly directive; its directivity in the above mentioned frequency range is between the minimum of 4.53 dB and the maximum of 9.40 dB. Also, from simulation results, its maximum gain and efficiency were found to be 8.50 dB and 84.43%, respectively which make it superior to similar antennas reported in the literature.  The proposed antenna can be used in THz imaging and spectroscopy to detect materials that have THz signatures in this region.}, Keywords = {THz antenna, Vivaldi antenna, wideband antenna, high gain, high directivity.}, volume = {26}, Number = {0}, pages = {1161-1164}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2189-en.html}, eprint = {http://opsi.ir/article-1-2189-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Shnan, Nazar and Haddawi, Sadegh and Hamidi, Seyedeh Mehri}, title = {Plasmonic Imaging in Thin Layer of PVP Contains Ag NWs}, abstract ={Silver nanowires are the favorable material in many applications based on their plasmonic double resonance in the visible region. In this work, thin layers of Poly-vinyl-pyrrolidone doped with Silver nanowires in different concentrations have been prepared to study the plasmonic properties. The plasmonic imaging system excite the Surface Plasmon by using high numerical aperture objective lens. The hot spot results from reflected light intensity of SPR proved that increasing of concentration of Silver nanowires yields to get better hot spot in plasmonic imaging systems which is useful in medical applications. }, Keywords = {silver nanowires, surface plasmon resonance, plasmonic imaging.}, volume = {26}, Number = {0}, pages = {1165-1168}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2212-en.html}, eprint = {http://opsi.ir/article-1-2212-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Kodeary, Ahmad Kazem and FalihHaddawi, Sadegh and Hamidi, Seyedeh Mehri}, title = {Controllable Nonlinear refractive index of PVP thin film doped with silver nanowires}, abstract ={In the present work, the nonlinear refractive index of silver nanowires (Ag NWs) doped with PVP polymer films is determined using z-scan technique. This work was particularly done utilizing a close aperture placed in front of the detector to show the effect of the Ag NWs on the nonlinear refractive index of the PVP films. It’s found experimentally that the nonlinear refractive index of the films can be varied by changing the compositional percentage of Ag NWs in PVP films. The obtained nonlinear refractive index of the samples indicated that Ag NWs can act as a good material for controlling the third order nonlinear coefficient in gain media due to its large nonlinear optical properties.}, Keywords = {Ag nanowires, nonlinear refractive index, PVP films, z-scan technique.}, volume = {26}, Number = {0}, pages = {1169-1172}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2213-en.html}, eprint = {http://opsi.ir/article-1-2213-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Haddawi, S. F. and Humud, Hammad R. and Hamidi, Seyedeh Mehri}, title = {Efficient dual wavelength Random laser based on light emitting polymers and silver nanowires double cavity structure}, abstract ={double wavelength random lasing attained in multilayer structure based on silver nanowires. The main gain media contained poly-vinyl-pyrolydone matrix contains silver nanowires as two spacer layers in the multilayer structure. Our results show efficient blue shift in the lasing properties due to the overlap of surface plasmon resonance of nanowires in this region and also nonlinearity of silver nanowires. This result is very useful to design and construction of efficient multi wavelength coherent and in coherent random lasing}, Keywords = {random laser, silver nanowires, multilayer, spacer, cavity.}, volume = {26}, Number = {0}, pages = {1173-1176}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2214-en.html}, eprint = {http://opsi.ir/article-1-2214-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} } @article{ author = {Jalalvandi, Sharareh and Moravvejfarshi, Mohammad kazem and Darbari, Sar}, title = {Effects of Substrate Phonons on the Graphene Plasmonic Absorption}, abstract ={We propose a new method to show the effect of the substrate phonons on the plasmonic absorption in graphene nanoribbons. In doing so, first, we have used a random phase approximation method to compare the dielectric functions of the graphene layers patterned on a polar SiO2 and a nonpolar like diamond-like-carbon (DLC) substrates. Then, using the employing dielectric functions together with the integral equation method, we have compared the corresponding plasmonic absorptions in the mid-infrared wavelengths. The comparison has revealed the SiO2 surface phonons strongly interact with the graphene surface plasmons (SPs) at the wavelengths λ =8.56 and 12.4 μm, modifying the related dielectric function and hence the plasmonic absorption significantly, as compared to that of the structured graphene on the nonpolar substrate. This study paves the way for designing graphene based plasmonic devices such as modulators, waveguides, and detectors.}, Keywords = {Phonon, Graphene, Plasmonic Absorption, Random Phase Approximation, Integral Equation Method.}, volume = {26}, Number = {0}, pages = {1177-1180}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2190-en.html}, eprint = {http://opsi.ir/article-1-2190-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2020} }