@article{ author = {JalalJabar, Shakhawan and Kouhi, Mohammad and Talebzadeh, Robabeh}, title = {Investigation of Fiber Optic Surface Plasmon Resonance Biosensor Containing Graphene and Titanium Dioxide Thin Film}, abstract ={In this paper, a fiber optic surface plasmon resonance biosensor with hybrid layers of graphene and titanium dioxide is proposed to increase efficiency. The normalized transmission power and resonance wavelength have been calculated by the transfer matrix method. With increasing the refractive index of the sensing medium, the resonance wavelengths are shifted to the larger wavelengths. The rate of the increase in resonance wavelength increases with the increasing refractive index of the sensing medium. Therefore, in the range of larger refractive index of the sensing medium, greater sensitivity is obtained. The results show that the sensitivity of the biosensor increases with the use of the titanium dioxide thin layer. By adding a 5 nm thick layer of titanium dioxide before the graphene layer, the sensitivity of the biosensor was increased from 2350 nm/RIU to 2600 nm/RIU.}, Keywords = {Biosensor, Surface plasmon resonance, Graphene, Sensitivity}, volume = {28}, Number = {1}, pages = {1-3}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2490-en.html}, eprint = {http://opsi.ir/article-1-2490-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {BashiriGodarzi, Farzad and Hasanshahi, Ali and Khalilzadeh, Javad and Riahi, Ali}, title = {Experimental study of the effect of diaphragm thickness and cavity length on Fabry-Perot optical fiber sensor for gas pressure measurement}, abstract ={In this paper, an interfering point optical fiber sensor is introduced to study the pressure of various argon, oxygen and nitrogen gases. The sensor probe is made with air cavity and with different lengths, and also a suitable diaphragm with different thicknesses is considered in order to achieve the optimal thickness and length of the Fabry- Perot cavity. PVC material is used for sensor layer, and a gas pressure sensor sensor setup was set up in the laboratory. The effect of diaphragm thickness and cavity length as two important parameters on the sensitivity of gas pressure sensor has been investigated. In the laboratory for gas pressure tests, diaphragm thicknesses of 28, 42, 56, 70 and 84 μm, the cavity lengths are 0.3, 0.55, 0.85, 1 and 1.25 mm and the compression range is 20 to 80 mbar. The results show that by reducing the diaphragm thickness and also reducing the cavity length, the sensitivity of the sensor increases.}, Keywords = {Optical fiber, Fabry-Perot sensor, diaphragm thickness, cavity length}, volume = {28}, Number = {1}, pages = {4-6}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2491-en.html}, eprint = {http://opsi.ir/article-1-2491-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {Omidi, Marzieh and Zibaii, Mohammad Ismail and Granpayeh, Nosrat}, title = {Simulation of Myelinated Axons of Brain Nerve Cells as an optical waveguide}, abstract ={Information transmission and processing are playing an essential role in the neural system, which can be done by electrochemical signals produced in ion channels or known biophotons in the nerve cell. One of the challenges that researchers face is finding the path of photon transmission in the nerve cell. Myelinated axons are a good candidate for transmitting signals and photons due to their waveguide structure. On the other hand, with the emergence of diseases such as MS and disorders in the production and transmission of nerve signals due to the demyelination, Understanding the properties of the myelinated axon as a waveguide is getting more important. In this paper, a better understanding of neural signaling in the myelinated axon as a waveguide and use its results to enhance optical methods such as optogenetics, light transmission by considering the paranode region, the Ranvier node, and the demyelination of myelin sheath in nerve fiber are investigated.}, Keywords = {Nerve fiber, Myelinated axons, Photon transmission, Waveguide}, volume = {28}, Number = {1}, pages = {7-9}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2492-en.html}, eprint = {http://opsi.ir/article-1-2492-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {Omidi, Marzieh and Zibaii, Mohammad Ismail and Granpayeh, Nosrat}, title = {Simulation of Nerve Fiber Based on Anti-Resonant Reflecting Optical Waveguide}, abstract ={Today, due to the widespread use of optical methods in the diagnosis and treatment of neurological diseases, it is very important to know the optical properties of nerve tissue and nerve cells. The use of light sources in these methods raises major challenges in how the beam propagates in the nerve fiber, which is a suitable substrate for neural signaling. Studies show that beam propagation is possible from both the axon and the myelin sheath. In this paper, according to the profile of nerve fiber refractive index and its similarity to fiber with a low refractive index core than the clad, the behavior of nerve fiber based on anti-resonant reflecting optical waveguide structure in different conditions are investigated. Light coupling to these two areas is shown by introducing axon and myelin sheath as a waveguide.}, Keywords = {Nerve fiber, Myelinated axons, Anti-Resonant Reflecting Optical Waveguide, Light coupling}, volume = {28}, Number = {1}, pages = {10-12}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2494-en.html}, eprint = {http://opsi.ir/article-1-2494-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {Borjikhani, Parisa and Zibaii, Mohammad Ismail and Granpayeh, Nosrat}, title = {Comparison of Tapered Optical Fiber Sensors Based on Gold, Silver, Copper and Aluminum Nanoparticles}, abstract ={Four tapered optical fiber sensors based on the localized surface plasmon resonance (LSPR) method with Au, Ag, Cu, and Al nanoparticles on the fiber waist area are simulated and investigated. The simulation method is a combination of the finite-difference time-domain (FDTD) and finite element method (FEM). The transmittance spectrum of the tapered optical fiber by variation of analyte refractive index is obtained for these four sensors and their amplitude and wavelength sensitivities are compared. It is shown that the Au sensor has the highest amplitude sensitivity of -4.5 per refractive index unit (1/RIU) and the Ag sensor has the highest wavelength sensitivity of 174.9 (nm/RIU) among these sensors. The results show that if the environmental conditions and the possibility of design for these sensors are provided, each sensor has its own advantages for diagnosing the diseases with the analyte refractive index range of 1.333‑1.403.}, Keywords = {Sensor, Tapered Optical Fiber, Localized Surface Plasmon Resonance, Nanoparticles}, volume = {28}, Number = {1}, pages = {13-15}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2495-en.html}, eprint = {http://opsi.ir/article-1-2495-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {Bayat, Mahdis and RezvaniJalal, Masoud and Pishdast, Masoud and Abdikian, Alirez}, title = {Simulation of sound wave excitation by electrostriction mechanism in laser pulse transmission through an optical fiber}, abstract ={In this paper, the generation of sound wave by electrostriction mechanism in injection of a laser pulse into the core of an optical fiber is simulated. The studies are accomplished by using of inhomogeneous hydrodynamic wave equation (with the divergence of volume electrostriction force as its source term). It is assumed that the initial perturbation of the fiber density is proportional to the electrostriction force. By solving the homogeneous wave equation, the acoustic eigen-frequencies of the optical fiber and the density eigen-functions are found. Then, the expansion theorem is used and propagation of the sound wave and its reflection from the fiber edge is simulated using a Mathematica code. Generation of sound echoes with temporal separation of 21 ns for a fiber made of fused silica of diameter 125 μm is completely evident.}, Keywords = {Electrostriction, Sound excitation, Laser pulse, Optical fiber}, volume = {28}, Number = {1}, pages = {16-18}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2496-en.html}, eprint = {http://opsi.ir/article-1-2496-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {Khosrojerdi, Homayoun and Latifi, Hamid and Ranjbar, Omid and Zibaee, Mohamad Esmail}, title = {Design and fabrication of tunable fiber fabry-perot filter with flat-concave cavity based on ceramic ferrule and nanostage with closeloop control mode}, abstract ={In this paper, The flat-concave structure is used to fabricate tunable fiber fabry-perot filter due to reducing the loss within the cavity and increasing the stability. etching and laser pulse are used for polishing to create a concave structure at the end of GRIN multimode fiber. The innovation of this paper is the construction of a stable fabry-perot filter with a high SNR and prefect alignment, using an optical fiber adapter, pigtail and bare Adapter, which performs alignment by ceramic ferrule.Gold and Aluminum coatings are used to increase the reflectivity of the filter surfaces. The fabry-perot made Filter with Finesse of 61 and FSR More Than 100 nm. The filter tunability is based on piezoelectric actuator with 5nm resolution in closed loop control mode. One of the main advantages of this structure is the capability to change the FSR conveniently, easy replacement of fiber Optic Without misalignment and high Repeatability.}, Keywords = {Fabry-perot filter , GRIN optical fiber , Closeloop control , Piezoelectric actuator}, volume = {28}, Number = {1}, pages = {19-21}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2497-en.html}, eprint = {http://opsi.ir/article-1-2497-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {GhahremaniMoghadam, Mohammad and Daraei, Ahmadreza and Babakhani-Fard, Mohammad-Mahdi and Zibaii, Mohammad Ismail}, title = {Simulation of a Chemical Sensor based on the Defective Photonic Crystal Fiber Structure}, abstract ={In this paper, a chemical sensor is designed and simulated based on the structure of a defective photonic crystal fiber. The computational results based on the finite element method (FEM) show that the geometry of the proposed sensor structure can detect the selected and optimal chemical sensing mode, with ethanol analyte, at a very small surface level of 0.4 μm2 with an extremely large sensitivity S~1550 nm/RIU. The geometry of the structure, though confining modes with a very small modal volume Vmode=0.0005(λ/nSiO2)3 in the defect region, drastically reduces light loss and by its resonance, provides a very high-quality factor of Q=3.1×108. In Addition, the structure supports evanescent modes with sufficiently large field amplitude and provides the basis for its use for chemical sensing based on refractive index changes.}, Keywords = {Optical Fiber, Defective Photonic Crystal, Refractive Index Sensing, Quality Factor}, volume = {28}, Number = {1}, pages = {22-24}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2498-en.html}, eprint = {http://opsi.ir/article-1-2498-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {Rahimi, Lale and Askari, Ali-Asghar and Arjmand, Mojtaba and Mozafari, Mortez}, title = {Comparison of using 2-D Non-local means, median methods, and a hybrid of them in the processing of the temperature profile of a distributed fiber Raman sensor}, abstract ={Fiber optic temperature Raman sensors are among the most important distributed sensors with many practical applications. The low power of Raman Stokes and, especially, anti-Stokes powers caused a considerable influence of the signal-to-noise ratio enhancement method on the accuracy of the measured temperature. In this paper, we have used the median and non-local means methods, and a hybrid of them, to improve the temperature profile of a fiber Raman sensor. Experimental results are presented for a 600 m fiber optic with a temperature step with a length of 20 m and located at a distance of 540 m from the entrance end of the fiber. Signal processing results show the appropriate results by respectively using the median and non-local means methods on the reduction of the temperature measurement error from 2 oC to 0.7 oC.}, Keywords = {Fiber Raman sensor, Signal Processing, Median method, Non-local means method}, volume = {28}, Number = {1}, pages = {25-27}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2499-en.html}, eprint = {http://opsi.ir/article-1-2499-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {Ojaghloo, Ali and Parvin, Parviz and Moradi, Hamed and Shahi, Fatemeh}, title = {Sensitivity investigation of optical fiber sensors based on Fabry–Pérot interferometry using MoS2 and GO membrane for detection of acoustic waves}, abstract ={In this paper, an optical fiber sensor (OFS) based on extrinsic Fabry–Pérot (F-P) interferometry (EFPI) is reported for acoustic waves detection. The sensor diaphragm is made of disulfide molybdenum (MoS2) and graphene oxide (GO) nanosheets. These diaphragms are placed in the end face of single-mode fiber (SMF) optics. Due to the lower Young’s modulus of the MoS2 rather than GO, the fabricated sensor benefits high sensitivity to detect acoustic waves. The results show that the sensitivity of the MoS2-based sensor, ~18.50 rad/Pa, is more than the GO-based sensor (~15.52 rad/Pa).}, Keywords = {Optical fiber acoustic sensor, Fabry–Pérot interferometry, MoS2, Graphene oxide}, volume = {28}, Number = {1}, pages = {28-30}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2500-en.html}, eprint = {http://opsi.ir/article-1-2500-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {Arefnia, Fatemeh and Zibaii, Mohammad Ismail and Dorranian, Davoud and Rezadost, Hass}, title = {Design and fabrication of a polymer optical fiber based on citrate}, abstract ={Implanting optical fiber into tissue is one of the ways to deliver light and overcome the issue of tissue turbidity. In this paper, the design and fabrication of a new type of a polymer optical fiber with flexible and degradable biocompatible step-index for the delivery of light with a diameter of 1400µm and lengths of 3 cm and 7 cm are presented. The degradation rate of the optical fiber polymers poly (octamethylene maleate citrate) and poly (octamethylene citrate) for 10 days is -1.5 mg/day and -1.8 mg/day, respectively. By coupling the light with the microsphere lens into the optical fiber structure and also by using the new chemical abrasion method of the optical fiber tip, obtained output power efficiencies at 532 nm, 589 nm and 650 nm are 77.8%, 30% and 24.2%, respectively. The flexibility and degradability of polymer optical fiber reduce and eliminate the constraints created by fiberglass, including restricting the animal’s free movement, fragility, and tissue damage from leaving the tissue.}, Keywords = {biodegradable, biocompatible, flexible, optogenetic, polymer optical fiber}, volume = {28}, Number = {1}, pages = {31-33}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2501-en.html}, eprint = {http://opsi.ir/article-1-2501-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {Tamimi, Ali and Ghezelayagh, Mohammdhossein and Bashiri, Abbas}, title = {Design and construction of visible light Instantaneous wavelength measurement}, abstract ={This paper presents a method for measuring the wavelength of visible light. Many laboratory and  industrial applications require a wavelength measurement system. Wavelength sensing devices in the visible and infrared spectrum are expensive and bulky. As a result, the use of wavelength sensors has been neglected in many applications. In this research, a practical design and construction of a wavelength measuring device with a simple electro-optical method has been investigated. Cost is much lower than the existing spectrometers, portability and continuous output are the features of this system. The system's response range is from 750 to 950 nm. Increasing wavelength spectral range is possible using a different optical filter. The key to solving the problem is the unique amount of light passing through a filter for a specific wavelength. When the signal reaches the system with a specific wavelength, as the amount of input light attenuation is a unique for each wavelength, the wavelength (frequency) of the received signal can be determined by the amount of light attenuation in comparison to reference light. Then the wavelength can be declared by a processor. Depending on the measured wavelength, color detection can be done based on the wavelength.}, Keywords = {Instantaneous frequency measurement, Wavelength measurement, Frequency measurement, Spectrometry}, volume = {28}, Number = {1}, pages = {34-36}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2502-en.html}, eprint = {http://opsi.ir/article-1-2502-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {Askari, Ali Asghar and Arjomand, Mojtaba and Rahiminejad, Lale and Mozafari, Mortez}, title = {Design and manufacturing of a fiber optic distributed temperature sensor based on Raman effect}, abstract ={Real-time temperature measurement and monitoring of devices and structures is very important in many cases. One of the suitable methods to measure the temperature of large structures is the use of optical fiber distribution sensor technology based on Raman nonlinear effect. In this paper, a fiber optic Raman distribution sensor is designed and built. The built-in sensor is capable of monitoring temperature over 10 km, with a temperature accuracy of 1 ° C and a spatial accuracy of 1.5 m. This sensor provides temperature profile to the user every 3 minutes after processing of Raman stokes and anti-stokes signals. In addition, the warning alarm and the temperature history of the monitored structure is also designed and implemented for it.}, Keywords = {Distributed Raman sensor, Temperature sensor, fiber optic sensor}, volume = {28}, Number = {1}, pages = {37-39}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2503-en.html}, eprint = {http://opsi.ir/article-1-2503-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {SolaimanyNazar, Hamid Reza and Ahmadi, Vahid and SolaimanyNazar, Ali Rez}, title = {Mach-Zehnder interferometric fiber optic sensor for measuring methyl orange dye concentration in water}, abstract ={An intensity-based Mach-Zehnder interferometric fiber optic sensor using multimode–single-mode–multimode configuration is developed to measure methyl orange concentration in water. The transmission spectrum of the sensor is monitored at 460 nm while subjected to different concentrations of methyl orange (MO) solutions. The transmitted light intensity percent is proportional to the methyl orange concentration. This sensor shows  a sensitivity of -37.2 and -37.9 dBm/ppm  for the measurement of MO concentration in DI and Tehran tap water, respectively. This sensor offers easy fabrication, fast response, online monitoring, and proper linear response at low concentrations beside other advantages of fiber optic sensors.}, Keywords = {Fiber optic sensor, Mach-Zehnder interferometric, Methyl orange dye, Water pollution}, volume = {28}, Number = {1}, pages = {40-42}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2504-en.html}, eprint = {http://opsi.ir/article-1-2504-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {Babakhani-Fard, Mohammad-Mahdi and Daraei, Ahmadreza and GhahremaniMoghadam, Mohammad and Zibaii, Mohammad Ismail}, title = {Modeling of a Polarization Rotator Photonic Crystal Resonator on Insulator for Label-Free DNA Detection}, abstract ={In this paper, a structure of photonic crystal resonator biosensor based upon a quad-core silicon- silicon nitride cross-beam on silica insulator with the elliptical geometry of tapered walls including periodic air grating along the entire structure is modeled. The computational results showed that the structure can be used to detect biological parameters in a wide range of frequencies by intensifying the sensing mode with a large quality factor Q≈9827.8 and confining with a very small modal volume Vmode=0.001(λres/neff)3 in the microcavity area and creating a wide bandgap of 646.5 nm. This structure is capable of detecting a very small surface area of 0.0045 μm2 from the analyzed solution of DNA molecules with very high surface and resonance Sensitivities equal to Ssur≈0.0008 RIU/nm and Sres≈340.6 nm/RIU, respectively.}, Keywords = {Photonic Crystal, Optical Resonator, Label-Free Sensing, Refractive Index}, volume = {28}, Number = {1}, pages = {43-45}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2505-en.html}, eprint = {http://opsi.ir/article-1-2505-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {RezaeeSirous, Pedram and Batebi, Saee}, title = {Optical measurement of semiconductor layer}, abstract ={One of the requirements of research in the field of Nanotechnology is making and developing equipment for observing and measuring. In this study, a non-contact optical system is designed and made for measurement of semiconductor layer thickness. A red laser with a 632.8 nm wavelength (power of 2 mW), a proper optical design and arrangement of Fabry Perot interferormeter are used for interference fringes. As the thickness of semiconductor layer varies, the fringe spherical interference constantly changes as well. Then, the thickness of layers can be gauged by counting the lines. The variations are measured through several methods by a suitable optical set up, forming spherical lines, designing integrated circuit and using artificial intelligence. Meanwhile, the measurement methods were investigated. Finally, the best result and minimum measurement of 600 nm was recorded using image and video analysis by MATLAB program and utilizing photodiode Tsl 250.}, Keywords = {Optical microscope, Fabry Perot interferometer, measurement of semiconductor layer}, volume = {28}, Number = {1}, pages = {46-48}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2506-en.html}, eprint = {http://opsi.ir/article-1-2506-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {Arjmand, Mojtaba and Rahimi-Nezhad, Laleh and Askari, Ali Asghar and Mozafari, Mortez}, title = {Implementation of temperature calibration of Raman distributed sensor for temperature measurement along optical fiber}, abstract ={In this paper, we describe the procedure of temperature calibration of backscattered signals in Raman distributed fiber sensor. Considering different sources of attenuation in the optical fiber, the received signals should be corrected by introducing a linear power-loss per length of the fiber. Moreover, the received signals depend on the parameters of the optical fiber, laser, detector and other components of sensor system, which are temperature dependent and can change over time. To eliminate these effects and accurately determine the temperature from the received signals, these parameters must be specified continuously through the temperature calibration of the sensor. We did this by placing a reference fiber coil in a constant temperature bath to determine the unknown parameters and accordingly the temperature distribution along the optical fiber. The results show a good agreement between the temperatures obtained at each point of the sensing fiber with the actual temperature applied to it.}, Keywords = {Temperature calibration, Fiber optic sensor, Distributed temperature sensor, Accurate temperature measurement}, volume = {28}, Number = {1}, pages = {49-51}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2508-en.html}, eprint = {http://opsi.ir/article-1-2508-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {RasuliEmadi, Zahra and Bahadoran, Mahdi and Honarasa, Gholamrez}, title = {Refractive index gas sensor based on fano resonance induced by air holes in the bus-waveguide of a microring resonator}, abstract ={Applying two cylindrical holes on the bus-waveguide that jointed to the single ring resonator brings about realizing of three different types of resonance peaks including Lorentzian, Fano and electromagnetically induced transparency (EIT). The system was used as gas sensor and the sensitivity and quality factor were determined for all three types of resonant peaks. Results simulated using finite difference time domain method. A free spectral range as wide as 99 nm was realized by the proposed layout. Amongst all types of the realized resonances, the EIT and Fano resonances have the highest quality factor of 3074 and 2535,respectively  that are higher than those of reported for the conventional single ring resonators.}, Keywords = {two-Air-hole ring resonator, Optical sensor, Finite difference time domain, Gas sensor}, volume = {28}, Number = {1}, pages = {52-54}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2509-en.html}, eprint = {http://opsi.ir/article-1-2509-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {Azizpour, Fatemeh and RashidianVaziri, Mohammad Reza and Jafarfard, Mohammad Reza and Pazokian, Hedieh and Montazerolghaem, Mohse}, title = {Fabrication of micro-channels in glass by laser back-writing technique and their characterization}, abstract ={In this work, fabrication of micro-channels by laser back-writing technique and their characterization is reported. Using a steel metal target and a Nd:YAG laser source (1064 nm) for ablation, micro-channels were fabricated in glass substrates. Laser fluenece was varied between 0.53 to 0.56 with paces of 0.01 J/cm2, and the total number of pulses were 60 and 90. The results show that the laser fluence play a more important role in changing the size and optical absorption distribution of the micro-channels.}, Keywords = {Laser back-writing, micro-channels, absorption coefficient}, volume = {28}, Number = {1}, pages = {55-57}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2510-en.html}, eprint = {http://opsi.ir/article-1-2510-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {Dastjerdi, Vahid and HajiAliKhamse, Omid and MomtazianFard, Alireza and Vahedi, Mohamm}, title = {Design and fabrication of Distributed fiber optic sensor based on phase analysis method and field test results}, abstract ={Monitoring the security of sensitive environments is of particular importance due to the reduction of damage during natural and unnatural events. Last generation sensors do not meet the existing requirements due to various weaknesses such as short measurement distance, high cost, failure to determine the location of the event, etc., and the need for extensive monitoring systems. On the other hand, distributed fiber optic sensors have attracted attention due to outstanding advantages such as high speed, immunity to electromagnetic interference, accurate location of the event, long range and low maintenance costs. In this paper, a 2 km long distributed fiber optic sensor system is designed and implemented based on the reflection Rayleigh scatter phase analysis method to monitor human passage in the fiber range. Finally, two distinct targets, including a human and a 80 Hz vibrating motor, were identified from a distance of 1200 and 1000 m from the beginning of the fiber with an SNR of 39 and 27 dB, respectively.}, Keywords = {Fiber optic, Distributed sensor, Rayleigh scattering, Phase sensitive OTDR}, volume = {28}, Number = {1}, pages = {58-60}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2511-en.html}, eprint = {http://opsi.ir/article-1-2511-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {RasuliEmadi, Zahra and Bahadoran, Mahdi}, title = {Fabry-Perot Refractive index sensor using perforated ridge bus-waveguide}, abstract ={Implementing two holes on a ridge bus-waveguide provides a Fabry-Perot resonator with the Lorentzian output of light. The optical transfer function for the proposed system was derived using the scattering matrix method. The proposed layout used as a refractive index sensor and results were simulated by Lumerical software using the finite difference time domain method. An extended free spectral range of 140nm and the sensitivity of 46nm/RIU were realized by the system. The superiorities of the proposed system are in its simple design, fabrication feasibility, realizing simultaneous changes in the resonance amplitudes and wavelength spectrum, besides an acceptable sensitivity of the sensor.}, Keywords = {Fabry-Perot resonator, Optical sensor, Gas sensor, Finite difference time domain}, volume = {28}, Number = {1}, pages = {61-63}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2512-en.html}, eprint = {http://opsi.ir/article-1-2512-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {Ghaneie, Firoozeh and Ranjbar-Naeini, O.R. and Aminolroaya, Neda and SalehiMoghaddam, Mohammadreza and Parandvash, Amir Hosein and Latifi, Hami}, title = {Detection of droplets in the optofluidic chip by using a tapered optical fiber}, abstract ={In this paper, a single-layer optofluidic chip was designed and fabricated in which a non-adiabatic tapered optical fiber with a diameter of 12 microns was used to detect the real-time frequency of water droplets. This experiment carried out the microfluidic chip. In this study, by using the intensity-based demodulation the output spectrum of the tapered optical fiber was investigated. The droplet formation frequency at 0.1, 0.2, and 0.3 kHz was detected in real-time. Finally, the effect of changing the fluid flow rate on the droplet formation frequency was detected as well.}, Keywords = {tapered optical fiber, droplets, real-time, Optofluidic}, volume = {28}, Number = {1}, pages = {64-66}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2513-en.html}, eprint = {http://opsi.ir/article-1-2513-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {Teymoordel, Zohreh and Parvizi, Roghaieh and Sadeghi, Ebrahim}, title = {Synthesis and characterization of MoS_2 nanostructure and coating on the optical fiber towards a humidity sensing application}, abstract ={In this work, clad-modified fiber with Mo layer were experimentally investigated towards relative humidity (RH) sensing module. Fiber optic sensors designed based on evanescent waves improves sensor sensitivity if coated by suitable nanostructures. The morphology of Mo coated optical fibers were studied by scanning electron microscope (SEM) indicating a uniform and dense deposition on optical fibers. The synthesis of Mo nanostructure, the approaches were implemented by incorporating small quantities of green glycine amino acid. The experimental comparing studies revealed that the sensing performance improved for the glycine incorporated Mo layer coated optical fibers in exposure to the surrounding environment relative variation from 30%-75%.}, Keywords = {MoS_2 nanostructure, Humidity sensor, fiber optic sensor}, volume = {28}, Number = {1}, pages = {67-69}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2514-en.html}, eprint = {http://opsi.ir/article-1-2514-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {Mansoursamaei, Mohsen and Malakzadeh, Abdollah and Gholampour, Mahdi}, title = {Comparison of reflection width and peak power of a uniform FBG in tilted cantilever beam technique for simultaneous measurement of temperature and strain}, abstract ={The use of FBG as a strain sensor in civil and industrial applications such as monitoring of civil superstructures (bridges, towers, dams, etc.) and perimeter protection of security and government sites has always been of interest to researchers. Due to the overlap of temperature and strain changes in the reflection spectrum of FBG sensors, one of the most efficient ways to reduce measurement error in these sensors is simultaneous measurement of these parameters. In this paper, to select a suitable and cost-effective method for simultaneous measurement of temperature and strain in civil and industrial applications, two methods based on the tilted cantilever beam technique that require only a FBG are used. Finally, among these two, which are based on the changes in width and peak power reflectance of FBG, the full width at half maximum (FWHM) method has been selected as the best and most cost-effective method by MATLAB software.}, Keywords = {Fiber Bragg grating, FBG sensor, Tilted cantilever beam, Perimeter protection}, volume = {28}, Number = {1}, pages = {70-72}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2515-en.html}, eprint = {http://opsi.ir/article-1-2515-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {Eslami, Niusha and Zibaii, Mohammad Ismail and Granpayeh, Nosrat}, title = {Simulation of a Titanium oxide coated H shaped Optical Fiber Plasmonic Sensor for Enhancing Performance}, abstract ={In recent years, the need to analyze various physical, chemical, and biological parameters with the help of optical fiber sensors has increased. The use of fiber-optic surface plasmon resonance is a suitable alternative to prism-based structures. In this paper, the H-shaped optical fiber sensor is analyzed to investigate changes in the fiber confinement loss spectrum in exchange for changes in the refractive index of the assay material, the effect of changing the thickness of gold, insulation, and depth of the polished area. The wavelength sensitivity, amplitude sensitivity, and figure of merit (FOM) of this structure are 6833.33 (nm / RIU), 2539 (1 / RIU), and 52.197, respectively. A model like this can be effective in measuring biological parameters.}, Keywords = {Sensor, H-shaped optical fiber, Surface plasmon resonance, Sensitivity, Thin metal film}, volume = {28}, Number = {1}, pages = {73-75}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2516-en.html}, eprint = {http://opsi.ir/article-1-2516-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {taravideh, Kobra and parvizi, Roghaieh and Sadeghi, Ebrahim}, title = {Preparation and investigation Optical Fiber Sensor coated Gold Thin Film based on Surface Plasmon Resonance}, abstract ={In this paper, we investigate the Surface Plasmon Resonance (SPR) provided by Au coated optical fiber sensor utilized as a refractometer. It is observed that SPR are formed at the dielectric metal boundary interface in the sensing region. In this work, two different thicknesses of Au thin later deposited on polymer optical fiber were experimentally studied in exposure to the solutions with various refractive index. The obtained results revealed that the SPR wavelength appeared in the transmitted spectra shifts to the longer wavelength according to the changes in the refractive index of surrounded solution. Moreover, it could be observed that the fiber coated with thicker Au layer with 53 and 98 nm thickness shows a more efficient sensing performance rather than that of the thin one but Sensitivity was obtained for a sensor with a thickness of 807 nm / RIU and for another sensor with 396 nm / RIU. The linearity and high sensitivity obtained by the proposed sensing fibers point to a versatile sensing probe for the development of SPR-based biosensors.}, Keywords = {Surface Plasmon Resonance,Optical Fiber Sensor, Gold Thin Film}, volume = {28}, Number = {1}, pages = {76-78}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2517-en.html}, eprint = {http://opsi.ir/article-1-2517-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {RajabiFiroozabad, Ali and RanjbarNaeini, Omid Reza and Mirzaei, Mahdi and Latifi, Hami}, title = {Fabrication of optical fiber Fabry-Perot strain sensor based on the Vernier effect}, abstract ={In this study, a pair of Fabry-Perot (FP) interferometers were used to construct an optical fiber sensor more sensitive than a single optical FP fiber sensor. In order to construct these interferometers, hollow-core fibers were combined and put between a pair of single-mode fibers. In the case of these interferometers, one was used as a reference while the other one was utilized as a sensing interferometer. Sensors integration was accomplished by a 50/50 coupler. We obtained 12.23 (pm ⁄μɛ) sensitivity within the dynamic ranges 0-4000 μɛ, which are approximately 13 times greater than a single optical fiber FP sensor. Since there is a need for temperature compensation in the field of strain measurement, the complex optical Vernier effect has been used in the temperature range of 40-75°C, resulting in wavelength variations of 40pm.}, Keywords = {Fabry-Perot interferometer, optical fiber sensor Vernier effect, complex Vernier effect, strain sensor}, volume = {28}, Number = {1}, pages = {79-81}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2519-en.html}, eprint = {http://opsi.ir/article-1-2519-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2021} } @article{ author = {AlizadehSangli, Ali and Rajabi, Yasser}, title = {Simulation of far-field diffraction evolution due to the propagation of high-power laser beam from the nanofluid}, abstract ={Recently, has been observed that some fluids, when exposed to intense laser beam, cause a phase difference in the beam and then lead to a circular diffraction pattern. In this paper, the evolution of laser beam diffraction due to the propagation of a nanofluid using numerical simulation is investigated. Also, using experimental and theoretical results and software simulations, diffraction patterns due to the propagation of high-power laser beam from nonlinear nanofluid are obtained. Then, using simulated diffraction pattern, the nonlinear refractive index of nanofluid is obtained.}, Keywords = {Nano fluid, Nonlinear optic, Nonlinear refractive index, Self-focusing, Self-defocusing.}, volume = {28}, Number = {2}, pages = {6-9}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2749-en.html}, eprint = {http://opsi.ir/article-1-2749-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {jorag, mostafa and kavoshTehrani, masoud and MousaviFard, Sayed Sajj}, title = {Design reflection and transmission input couplers in holographic waveguide display}, abstract ={Waveguides have become very popular in the field of near-eye displays due to their thickness and light weight. However, the stray lights generated in the waveguide greatly reduce the quality and diffraction efficiency of the image. In this paper, using two models designed for reflection and transmission holographic input couplers with finite element method in Comsol software, the optimal parameters for input couplers to increase the diffraction efficiency and minimize the stray lights in them are obtained. Reflective coupler reached 100% diffraction efficiency and the stray lights were completely eliminated, while in the transmition couplers the diffraction efficiency reached 95% at best and the stray lights were not completely eliminated.}, Keywords = {coupler, diffraction efficiency, holographic waveguide, stray lights}, volume = {28}, Number = {2}, pages = {10-13}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2769-en.html}, eprint = {http://opsi.ir/article-1-2769-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {AZIZpour, Fatemeh}, title = {Design and preparation of fork-shaped diffraction grating and generation of optical vortex carrying orbital angular momentum}, abstract ={In this work, the report of design, preparation and characterization of fork-shaped diffraction gratings with micrometric line spacing is presented. A simple preparation method is proposed and by investigating the preparation parameters, the method is optimized. The used optical setup for generation of optical vortex from the fork-shaped gratings and the obtained results are also presented. The results show that using the proposed method, optimal line spacing is about 175 mm and the obtained grating can produce a good quality optical vortex. }, Keywords = {Microstructure, Optical grating, Optical vortex}, volume = {28}, Number = {2}, pages = {14-17}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2678-en.html}, eprint = {http://opsi.ir/article-1-2678-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {jorag, mostafa and KavoshTehrani, masoud and MousaviFard, Sayed Sajj}, title = {Calculation of angular and spectral bandwidth of volume grating as input coupler in image waveguide display}, abstract ={The angular and spectral bandwidth of the volume grating, which is used as the input coupling in the image waveguide display, is affected on the field of view and color uniformity of the received final image. In this paper, using the coupled wave theory, the angular and spectral bandwidth of the transmission and reflection volume grating as input coupler in image waveguide display are plotted using the MATLAB software along the wavelength of the visible region. The result shows that the angular bandwidth of the reflection grating is more than the transmition one and therefore its field of view is more limited. Also, the spectral bandwidth of reflection grating is less than transmition one and as a result has better color uniformity.}, Keywords = {coupler, field of view, volume grating, waveguide}, volume = {28}, Number = {2}, pages = {18-21}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2770-en.html}, eprint = {http://opsi.ir/article-1-2770-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {gholami, azam and rasuli, seifolah and Mohammadkhazaiy, Ali}, title = {Investigating propagation of multiple optical vortices under a plane wave bed}, abstract ={A light beam whose wave front has a phase singularity and is helical is called a vortex beam. Optical vortices have found many applications in optics. In this work, we consider propagation of a plane wave through a spatial light modulator consisting of one a phase singularity with a topological charge equal to l_{1} located at the center of a square and four phase singularities all having similar topological charges equal to l_{2} located at the corners of the square. Different values are considered for the topological charges l_{1} and l_{2} . Experimental and simulation results show that, if signs of the topological charges at the corners and center of the square are the same, the radius of the central singularity increases and it convolves the other singularities. If their signs are opposite, the total topological charge equals to zero and at the far-filed, we have a plane wave.}, Keywords = {Vortex beam, Topological charge, Phase singularity.}, volume = {28}, Number = {2}, pages = {22-25}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2717-en.html}, eprint = {http://opsi.ir/article-1-2717-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {MosavatShahreza, Shakiba and mousavi, Ayoob and Saghafifar, Hossei}, title = {Evaluation of diffraction orders efficiency of Laguerre-Gaussian beam generated by the phase and amplitude fork grating applied on spatial light modulator (SLM)}, abstract ={In this paper, Laguerre-Gaussian beams are produced by computer generated hologram (CGH) on spatial light modulator (SLM). At first, Laguerre-Gaussian beam generation process is simulated by diffraction of laser light from phase and amplitude fork gratings in two types: blazed (sawtooth groove profile) and binary gratings and the result are compared. The higher efficiency is obtained for the blazed phase grating in the first order. Recorded data from the experiment shows a good agreement with simulation results. In order to evaluate the topological charge of the generated Laguerre-Gaussian beam, the Mach-Zehnder interferometer setup is used.}, Keywords = {Binary and Saw-tooth Grating, Computer generated Hologram, Laguerre-Gaussian beam, Spatial Light Modulator}, volume = {28}, Number = {2}, pages = {26-29}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2731-en.html}, eprint = {http://opsi.ir/article-1-2731-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Panahi, Majid and Darudi, Ahm}, title = {Thickness Measurement of the Glass Plate by In-Line Digital Holography}, abstract ={Holography is a method to record and reconstruct the amplitude and the phase of a wavefront concurrently and is ideally suited for accurate and efficient determination of the wavefront profile. In-line digital holography is a valuable tool for various measurements due to its simple configuration. In this paper, the thickness of a glass plate is measured using the in-line digital holography. We show that defocus aberration, created by the placement of a glass plate in the path of the wavefront, can be used to measure the thickness of the glass plate with high accuracy. Also, the thickness deviation is measured by the refractive index.}, Keywords = {Hologram, In-line digital holography, Glass Plate, Thickness, Wavefront}, volume = {28}, Number = {2}, pages = {30-33}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2574-en.html}, eprint = {http://opsi.ir/article-1-2574-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {izadi, safoora and ghavamipour, saee}, title = {Production of transverse multi-focus from a laser beam using an array of Fresnel lenses}, abstract ={ In some applications, it is necessary to create an array of focal points on a plane perpendicular to the laser beam. In this paper, an array of Fresnel lenses is designed to create transverse focal points and is placed in the path of a laser beam using a spatial light modulator. The reflected beam from the diffraction optical element, created transverse focal points equal to the number of Fresnel lenses designed. Also, the diffraction pattern from the array of Fresnel lenses is simulated, the results of which are in good agreement with the results of the experimental arrangement. }, Keywords = {Diffractive optical element, Fresnel lens, Spatial light modulator, Transvers focal points}, volume = {28}, Number = {2}, pages = {34-37}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2761-en.html}, eprint = {http://opsi.ir/article-1-2761-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {ebrahimi, fatemeh and Bahmanpour, Sana and Mahmoudi, Ali}, title = {Light Diffraction from a long Phase Strip (slit)}, abstract ={The problem of coherent light diffraction from a rectangular aperture in an opaque screen is well formulated in the undergraduate physics textbooks using scalar diffraction theory, and the results of these calculations have long been tested in optics labs and are used for educational and research purposes such as various measurements (for example, the size of a particles). In recent years, Iranian researchers have introduced new options for creating and applying the diffraction phenomenon in accurate measurements, which is the light diffraction from steps created on a reflective surface and diffraction from the edges of transparent objects. In this paper, we study the phenomenon of coherent light diffraction from a rectangular phase strip (slit), calculate the scattered light intensity distribution, and present computational and experimental results. We show that in this case, the usual formulas for measuring the width of the slit cannot be used. Examination of this type of diffraction can be used to measure the dimensions of transparent objects (for example, glass fibers or transparent organisms and particles under a microscope).}, Keywords = {Light Diffraction, Optical Measurement, Phase Object, Scalar Diffraction}, volume = {28}, Number = {2}, pages = {38-41}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2605-en.html}, eprint = {http://opsi.ir/article-1-2605-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {javidi, behnaz and sabatyan, Arash}, title = {Topological charge measurement of an optical vortex for a spiral square fresnel}, abstract ={Abstract-In this article, it is shown that one can simply measure the topological charge of the optical vortex generated by means of a spiral square zone plate. To this end, the element is tilted with respect to the incident beam. The tilt causes the cylindrical symmetry of the system removed which is because of imposing an astigmatism on the system. As a result, interference fringes are formed at the focal plane. It is demonstrated that the number of the fringes is directly related to the strength of the charge. Finally, it is shown that the corresponding experimental results are in good agreement with the simulated predictions.}, Keywords = {Keywords: Diffraction - Diffractive lens – Optical vortex – Topological charge}, volume = {28}, Number = {2}, pages = {42-45}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2776-en.html}, eprint = {http://opsi.ir/article-1-2776-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {rasuli, saifollah and soltani, peyman and amiri, pouri}, title = {Design, fabrication, and characterization of a color Stokes imager}, abstract ={Abstract-In this work, the characterization of the built-in color Stokes camera is presented and the measurement of the Stokes parameters related to different samples in the image of the camera is discussed. The camera is able to detect the polarization of light in the image using Stokes parameters. The special layout is provided for the construction of the camera, and in the following, the color Stokes imaging camera is examined and characterized. Using the camera, the angle of polarization of light in different samples in the image is measured.}, Keywords = {Imaging, polarimetry, Stokes.}, volume = {28}, Number = {2}, pages = {46-49}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2535-en.html}, eprint = {http://opsi.ir/article-1-2535-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Bayat, Farizeh and Panahifar, Hossei}, title = {Ventilation coefficient effect on air pollutant emission of Tehran city}, abstract ={Natural factors in air pollutions periods and the amount of pollutant emission in Tehran during a specific pollution period have been investigated. Ventilation coefficient as a natural factor affecting the emission of pollutants has reached more than the threshold of air ventilation conditions at the beginning of the pollution period from December 25, 2020, to January 5, 2021, in Tehran city. Therefore, suitable ventilation conditions caused the pollutants in Tehran city have move in the wind direction and have also affected the cities of Qom and Semnan provinces. Referring to the CALIOP space lidar recordings over Tehran province during this period of pollution, it was found that the air pollutants share in some altitudes reaches more than 60% of all aerosols. }, Keywords = {Air pollutant, OMI, Tehran, Ventilation coefficient, CALIPSO}, volume = {28}, Number = {2}, pages = {50-53}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2531-en.html}, eprint = {http://opsi.ir/article-1-2531-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {BakhtiarShohani, Jafar and Hajimahmoodzadeh, Morteza and fallah, hamidrez}, title = {Usage of machine learning to recognition the double star systems in turbulent atmosphere}, abstract ={In this paper we investigate usage of machine learning in detection and recognition of double stars. To do this, numerous images including one star and double stars are simulated. Then, 100 terms of Zernike expansion with random coefficients are considered as aberrations to impose on the aforementioned images. Also, a telescope with certain aperture is simulated. In this work, two kinds of intensity are used, one is in-focus and the other is out-of-focus of the telescope. After these simulations, a convolutional neural network is configured and designed which its input are simulated intensity patterns. After learning the network, we could recognize double stars at severe turbulence without using adaptive optics with a very high level of accuracy which was more than 98%.}, Keywords = {Aberration, Turbulent atmosphere, Double stars, Convolutional Neural Network, Machine learning}, volume = {28}, Number = {2}, pages = {56-59}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2681-en.html}, eprint = {http://opsi.ir/article-1-2681-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Jouzdani, Afrooz and Khalesifard, Hamidreza and Bayat, Ali}, title = {Investigating impacts of dust events in Northwest Iran on atmospheric temperature and radiative forcing using sunphotometer recordings}, abstract ={Dust particles affect the atmospheric radiation balance by scattering and absorbing solar radiation at various wavelengths. In Zanjan, a city in northwest Iran, dust is the dominant aerosol during spring and early summer. In this study, we analyzed the impacts of dust on synoptic temperature and the radiative forcing of the atmosphere. High AOD values and low Angstrom exponent (AE) values indicate the presence of coarse particles, such as dust. Dusty days are identified by AOD870nm > 0.35 and AE < 0.5. The Optical properties of dust particles have been evaluated using ground-based sunphotometer Cimel CE-318. By calculating the correlation between AOD, temperature, and ARF, the impacts of dust events on the temperature and radiative forcing can be determined. Results show, the temperature and AOD are negatively correlated (r = -0.21). During a typical dust event and two following days of it, we found that the mean daily temperature drops down 1°C to 3 °C. Additionally, there was a significant correlation between ARF and AOD (r = 0.83).}, Keywords = {Aerosol, Aerosol radiative forcing, Dust, Sunphotometer,Temperature}, volume = {28}, Number = {2}, pages = {60-63}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2551-en.html}, eprint = {http://opsi.ir/article-1-2551-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {}, title = {Investigation of optical properties of aerosols in Urmia Lake area using Calitoo handheld sun-photometer}, abstract ={Sun-photometer is an optical tool for measuring the Aerosol Optical Depth, AOD and Ångström Exponent, AE. In this paper, measurements with Calitoo sun-photometer in Urmia city and Rashkan region, which has been done for six months, are reported. The measurement period started on November 1, 2020, and lasted until April 30, 2021. During this period, 117 days were measured. The average AOD at three wavelengths of 465, 540, and 619 nm and AE was equal to 0.25, 0.21, 0.18, and 1.08. Aerosols were classified based on AOD and AE. Results show that, in 85 days, AOD was equal to 0-0.7 also AE was equal to 0.7-1.7 (industrial urban pollution). For 12 days AOD was 0.2-1.5, and AE was 0-0.7 (dust). For another 12 days, AOD was 0-0.2 also AE was 0-0.7 (mixed dust). Only in two days, AOD was 0-0.2 also AE was 1.7-2 (clear air).}, Keywords = {Ångström exponent, Aerosol optical depth, Calitoo handheld Sun-photometer.}, volume = {28}, Number = {2}, pages = {64-67}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2528-en.html}, eprint = {http://opsi.ir/article-1-2528-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {yazdanikahkeshi, saeed and Saghafifar, hossein and MardanianDehkordi, hamidreza and Moosavi, Ayoob}, title = {Design and construction of proportional-integral-derivative (PID) control circuit for using in adaptive optics system}, abstract ={In this paper, In order to correct the laser wavefront propagated through the free space communication channel, the circuit of a control system with a maximum frequency of 150 Hz is designed and fabricated to correct the tip-tilt aberrations of the laser wavefront in turbulence with a tip-tilt mirror. Measured wavefront error by a quadrant sensor enters the analog-to-digital converter circuit and the PID algorithm after converting it to analog sends the calculated commands to the mirror driver. The performance of the control system in laboratory and free space environment is successfully evaluated.}, Keywords = {adaptive optics, complex conjugate, PID controller, tip tilt mirror}, volume = {28}, Number = {2}, pages = {68-72}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2554-en.html}, eprint = {http://opsi.ir/article-1-2554-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {}, title = {Investigation of a dust event observed in Urmia Lake area using ground-based polarization LiDAR}, abstract ={ISPL, the polarization LiDAR station of IASBS, is located on the west coast of Urmia Lake (UL). This station was set up in October 2018 to study the atmosphere of UL. In this article, using ISPL, we investigate the long-range dust layer transferred to the UL atmosphere. The dust layer was observed by the ISPL on October 24-25, 2021 at an altitude of 4-8 km. The volume depolarization ratio (VDR) of this layer is more than 20%. Whereas the VDR of aerosols at altitudes below 2 km is less than 20%. The results show that the type of aerosols transferred from neighboring dust sources (Saharan Africa) is different from aerosols from the ​​UL basin. In this event, the concentration of aerosols at low altitudes is higher than aerosols at altitudes above 4 km.}, Keywords = {aerosols, polarization LiDAR, Urmia Lake, volume depolarization ratio}, volume = {28}, Number = {2}, pages = {73-76}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2529-en.html}, eprint = {http://opsi.ir/article-1-2529-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {moosavi, Ayoob and Mobashery, Abolhasan and Arjmand, Mojtab}, title = {Simulation and experimental study of automotive LiDAR detection in presence of fog and performance improvements of the system}, abstract ={In order to improve automotive LiDAR system performance in detecting obstacles, under fog and smoke environment, the shape changing of received signal is studied. The impulse response of such environment is simulated and experimentally investigated. Usage of a fan shaped beam, instead of the rotationally scanning method, has reduced conventional optomechanical complexities. The required optics for generating line shape beam in far field is simulated and experimentally applied. Discrimination between pedestrians and other rigid targets during heavy fog is possible by using short (nanosecond) pulses and pulse shape analyzing in the receiver.}, Keywords = {Automotive LiDAR, impulse response of scattering media, Line laser, Powell lens}, volume = {28}, Number = {2}, pages = {77-80}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2700-en.html}, eprint = {http://opsi.ir/article-1-2700-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Taji, Banafsheh and Memarian, Mohammad Hossein and Flamarzi, Mahbanoo}, title = {Ionospheric TEC Response to Magnetic Storms and Galactic Cosmic Rays in a Solar Cycle}, abstract ={ Solar activity and galactic cosmic rays (GCR) change the behavior of the ionosphere and subsequently the ionospheric. Solar activities include solar radiation, sunspots, solar winds, and magnetic storms. This study investigates the relationship between Kp magnetic storm index and galactic cosmic rays with total ionosphere electron content (TEC), obtained using global GPS data for 2015, 2016 and 2017. Comparing these parameters, it can be seen that the Kp magnetic storm index is directly related to TEC, while it is inversely related to galactic cosmic rays. Comparison of these parameters shows that TEC is directly related to the Kp magnetic storm index and inversely related to galactic cosmic radiation.}, Keywords = {Total electron content, Index of magnetic storms, Galactic cosmic rays.}, volume = {28}, Number = {2}, pages = {81-84}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2639-en.html}, eprint = {http://opsi.ir/article-1-2639-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {koushki, ehsan and mirzaeiMohammadabadi, Fatemeh and baedi, javad and ZareTazarqi, adel}, title = {Measurement of hydrodynamic diameter of gold nanoparticles by dynamic light scattering methods and simulation of fluid velocity around particles}, abstract ={In this paper, information about hydrodynamic diameter of particles is presented. We have also studied the theory of particle hydrodynamic size and compare it with experimental values, which has been done on gold nanoparticles. First, we synthesize these particles, and then we simulate the fluid around it, and through this, we deal with the hydrodynamic size and numerical estimation of the relative velocity of the particles relative to the fluid. Results of dynamic light scattering and Stokes method were in good agreement.}, Keywords = {dynamic light scattering, fluid velocity, gold nanoparticles, hydrodynamic diameter, Navir_Stokes equation.}, volume = {28}, Number = {2}, pages = {85-88}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2747-en.html}, eprint = {http://opsi.ir/article-1-2747-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {askari, aliasghar and rahimi, laleh}, title = {Calculation of seawater diffuse attenuation coefficient using Monte- Carlo method for use in design of oceanic lidar systems}, abstract ={Today, underwater optical communication and shallow coastal water bathymetry using laser pulses are areas that have attracted the attention of many researchers and technology companies. Multiple scattering in seawater is a phenomenon that strongly affects laser beam propagation. In this regard, the diffuse attenuation coefficient is one of the important parameters in studying the propagation of laser beams in seawater. In this paper, using Monte Carlo statistical method, in addition to the investigation of laser beam diameter as a function of depth, beam attenuation coefficient as a function of field of view is calculated and finally, diffuse attenuation coefficient has been obtained for coastal and clean seawaters.  }, Keywords = {Multiple scattering, Monte Carlo method, diffuse attenuation coefficient, seawater}, volume = {28}, Number = {2}, pages = {89-92}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2716-en.html}, eprint = {http://opsi.ir/article-1-2716-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Afshar, Maryam and Haddad, Mohammad Ali and Moshtael, Elmira and ebadi, Mehrnoosh}, title = {Evaluation of nonlinear refractive index of walnut, rosemary and corn vegetable oils using z-scan technique}, abstract ={Vegetable oils have always been considered due to their wide variety of uses in daily life. As a result, the authenticity of this group of oils is important. Food authentication based on nonlinear optical characteristics is now considered as a new approach of determining food authenticity. In this study, as a first step, the nonlinear optical properties of walnut, rosemary, and corn vegetable oils are studied in the thermal regime using the Z-scan method and CW laser at 532 nm. The sample's nonlinear refractive index values are measured to be in the range of 10-8 cm2/W.}, Keywords = {Corn oil, Nonlinear optical properties, Nonlinear refractive index, Rosemary oil, Walnut oil, Z-Scan}, volume = {28}, Number = {2}, pages = {93-96}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2664-en.html}, eprint = {http://opsi.ir/article-1-2664-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {ranji, arezoo and aghdami, keivan mahmoud and kheradmand, Rez}, title = {Discrete cavity solitons in 1_D Array with Kerr nonlinearity with surface defect and local defect}, abstract ={In this paper, effects of coupling coefficient surface defect and local defect in light propagation on one-dimensional array of coupled optical cavities with Kerr nonlinearity are studied. First bistability curve is drawn and with stimulation results, bifurcation diagram of odd solitons in coupling coefficient surface defect and bifurcation diagram of even solitons in local defect of coupling coefficient are determined. Also solitons amplitude profiles are shown. Results show there are different odd and even solitons in defect region.}, Keywords = {Soliton, Discrete cavity soliton, Defect, Kerr nonlinearity}, volume = {28}, Number = {2}, pages = {97-100}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2653-en.html}, eprint = {http://opsi.ir/article-1-2653-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {sadrara, saman and Shayganmanesh, Mahdi}, title = {Numerical Simulation of Multimode Lasers with Stable Resonators by Prony Method}, abstract ={One of the fastest methods for calculating modes in stable and unstable resonators, which is approached with the diffraction phenomenon, is the Prony method or Eigenvector method (EM); In this article, this method was realized using Python programming language and related libraries. First, for validation in this method, accurate results were obtained by solving the diffraction integral for square and circular apertures with different Fresnel numbers. After performing the calculations for the diffraction apertures, the calculations were conducted for  plane-parallel resonator and the diffraction integral for this resonator was solved by Prony method and by discretization of the mirrors for the transition of the beam and the transverse  modes were obtained. Finally, the resonator modes was calculated for spherical mirrors, and by solving an eigenvalue equation, values ​​were obtained for the resonant transfer matrix, lowest order modes, and higher order modes, and their associated profiles were plotted for each case.}, Keywords = {Eigenvector Method, Modal decomposition, Prony Method, Resonator}, volume = {28}, Number = {2}, pages = {101-104}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2695-en.html}, eprint = {http://opsi.ir/article-1-2695-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Hassan, Amir and Haddad, Mohammad Ali and Afshar, Maryam and Golestanifar, Moie}, title = {Study of Nonlinear Optical Properties of Edible Pomegranate Kernel and Olive Oils in Thermal Regime}, abstract ={Organic vegetable oils have become very popular among the people due to their properties; their study is of special importance. Also, the authentication of this type of materials due to its high use need to be considered considerably. Nowadays, Investigation of nonlinear optical parameters of materials is considered as one of the methods of food authentication. In this research, in the initial feasibility study, the nonlinear properties of pomegranate kernel and olive oils have been investigated. Using Z-scan method, the nonlinear refractive index of these two types of edible oils was measured in the order of 10-8  (cm2/W) by using a continuous Nd: YAG laser of 532 nm.}, Keywords = {Pomegranate kernel oil, Olive oil, nonlinear optics, Z-scan method, nonlinear refractive index}, volume = {28}, Number = {2}, pages = {105-108}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2696-en.html}, eprint = {http://opsi.ir/article-1-2696-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {amini, Tahereh and Jahangiri, Fazel}, title = {Improving the tunability range of terahertz parametric amplifier based on nonlinear four wave mixing process in TOPAS}, abstract ={In this paper, a regenerative terahertz parametric amplifier with a high tuning range based on the four-wave mixing process in TOPAS is investigated. A terahertz wave seed with a peak power of 2W, under optical pumping with suitable pulse length, peak power and wavelength, can produce amplified terahertz with a central frequency in the range of 4.7 to 14.6 THz. The results of the optimal state show that the gain of amplification for one round trip inside the cavity and in the best phase matching conditions, at a frequency of 9.6 THz is equal to 1.049, which leads to the production of a terahertz wave with a maximum power of 2.098 W.}, Keywords = {FWM, Terahertz, THz, Nonlinearity, TOPAS, OPO, OPA.}, volume = {28}, Number = {2}, pages = {109-112}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2771-en.html}, eprint = {http://opsi.ir/article-1-2771-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {jahanshahi, parisa and Golshani, mojtab}, title = {PT-symmetry breaking point in two curved nonlinear optical waveguides}, abstract ={In this paper, the parity-time symmetry (PT-symmetry) breaking point of two curved optical waveguides in the presence of nonlinear Kerr effect is investigated. For this purpose, light propagation for different cases of presence and absence of loss/gain, as well as the presence and absence of nonlinear effect has been investigated. The numerical results show that the nonlinear effect causes the self-focusing effect, and therefore by reducing the effective coupling coefficient between the waveguides, reduces the PT-symmetry breaking point.}, Keywords = {Parity-time symmetry, nonlinear Kerr effect, Curved optical waveguides, PT-symmetry breaking point}, volume = {28}, Number = {2}, pages = {113-116}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2615-en.html}, eprint = {http://opsi.ir/article-1-2615-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {bagheri, Fatemeh and haratizadeh, hami}, title = {The influence of particle size on the response of the UV-activated sensor based on nanoparticles of ZnO}, abstract ={In this work, nanoparticles of ZnO with different grain sizes were synthesized by the hydrothermal method to investigate the influence of the grain size on gas-sensing performance. Sensors based on these nanoparticles were activated by UV radiation with a wavelength of 390 nm at the intensity of 0.55 mW/cm2. Sensors have been exposed to ethanol gas at low temperatures (80 °C) under UV light. The results indicate that the sensitivity is improved by reducing the grain size of the nanoparticles. It could be because the particle size of the materials synthesized was comparable to the Debye length.}, Keywords = {resistive gas sensor, UV irradiation, light-activated, ethanol, ZnO}, volume = {28}, Number = {2}, pages = {117-120}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2680-en.html}, eprint = {http://opsi.ir/article-1-2680-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Moradi, Mohammad Javad and MohammadAli, Mohammad Ali and Golestanifar, Moein and Ostovari, Fatemeh}, title = {Studying the optical nonlinear features of Graphene Oxide (GO) using Spatial Self-Phase Modulation (SSPM)}, abstract ={The discovery of graphene nanostructures attracted a great attention in this class of materials. In this paper, we investigate the nonlinear optical properties of graphene oxide. We applied spatial self-phase modulation to estimate the nonlinear refractive index of n2 and third-order electrical susceptibility of X3 for graphene oxide dispersed in NMP solution at four different concentrations. A 532 nm continuous-wave Nd:YAG laser was used in the experiment. According to obtained experimental data, the n2 and X3 values measured in the range of 10-7 cm2/W and 10-11 e.s.u. X}, Keywords = {Nonlinear Optic, Third Order of Electrical Susceptibility, Nonlinear Refractive Index, Graphene Oxide, Spatial Self Phase Modulation (SSPM).}, volume = {28}, Number = {2}, pages = {121-124}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2532-en.html}, eprint = {http://opsi.ir/article-1-2532-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Madhani, Ahmadreza and irani, elnaz and sadeghifaraz, amin and monfared, mohamm}, title = {Effect of laser pulse polarization on high harmonic generation from chlorine molecule}, abstract ={In this study, the effect of femtosecond laser polarization on the high harmonic generation and generated attosecond pulse from the chlorine molecule has been studied. linear and elliptical polarizations have been assumed for the femtosecond laser and calculations have been performed using time-dependent density functional theory in the three-dimensional real space. The results show a decrease in the intensity of the harmonics and the attosecond pulses when the ellipticity of the femtosecond laser is increased. Analyzing the intensity of the 24th harmonic order demonstrates that by increasing the ellipticity of the femtosecond laser from zero to 0.2 (0.4), the intensity of this harmonic decreases by about one (two) order of magnitude. The results of this research also show that changing the polarization of the driving pulse from linear to elliptical, reduces the intensity of the output attosecond pulse and increases their width.}, Keywords = {Attosecond pulse, High harmonic generation, Chlorine molecule, Time dependent density functional theory}, volume = {28}, Number = {2}, pages = {125-128}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2778-en.html}, eprint = {http://opsi.ir/article-1-2778-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {parishani, Marziyeh and Nadafan, Marzieh and Malekfar, rasoul}, title = {Investigation of the effect of hydrothermal reaction time on the nonlinear optical properties of vanadium disulfide}, abstract ={In this study, we prepared vanadium disulfide flower-like structures by hydrothermal method by changing the synthesis time. Microscopic characterization of these structures was investigated using X-ray diffraction characterization, Fourier transmission infrared spectroscopy and field emission electron microscopy images. The nonlinear optical characteristics of the samples were investigated by the Z-scan method and showed that the lateral sheet dimensions have a significant effect on nonlinear optical responses and show the potential properties of this structure in optical and photonic applications.}, Keywords = {Vanadium disulfide, Hydrothermal, Z-scan, self-focusing}, volume = {28}, Number = {2}, pages = {129-132}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2632-en.html}, eprint = {http://opsi.ir/article-1-2632-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Afshar, Maryam and Haddad, Mohammad Ali and Zare, Hakimeh and Gharghani, Shim}, title = {Experimental study of the dependence of nonlinear optical behavior of CdTe-Mn quantum dots on their synthesis conditions}, abstract ={In this research, the nonlinear optical responses of Mn-doped CdTe are investigated. The nonlinear refractive index and nonlinear absorption coefficient of samples, made by an aqueous method with two different heating methods, have been measured. For this purpose Z-scan method with a continuous Nd: YAG laser is used experiments. The results indicate that nonlinear optical response, particularly the nonlinear refractive index, depends on the CdTe-Mn quantum dots' synthesis procedure.}, Keywords = {CdTe, CdTe- Mn, Nonlinear optical properties, Nonlinear refractive index, Z-Scan, Quantum dots}, volume = {28}, Number = {2}, pages = {133-136}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2537-en.html}, eprint = {http://opsi.ir/article-1-2537-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Abidi, Bahare and Golshani, mojtaba and Zandi, Mohammad Hossei}, title = {Propagation of Quantum light in two curved PT-symmetry optical waveguides}, abstract ={In the paper, we investigate parity-time symmetry breaking point in two optical waveguides with alternative distance. To this end, a quantum approach is used to investigate light propagation for an entangled input state. Numerical results show that in the PT-symmetry phase total energy is constant and oscillates between two waveguides. By increasing gain/loss and in the PT-symmetry breaking phase, which is calculated by an intensity-based criterion , the total energy of the system increases exponentially.}, Keywords = {Curved optical waveguides, PT-symmetry, quantum optics, parity-time symmetry breaking point}, volume = {28}, Number = {2}, pages = {137-140}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2692-en.html}, eprint = {http://opsi.ir/article-1-2692-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {dadsetani, Mehr}, title = {The study of the effect of silicon impurity on the optical properties of Sc2C(OH)2 monolayer by density functional theory}, abstract ={In the density functional theory, optical properties of Sc2C(OH)2 with and without silicon impurity are studied. In the presence of silicon impurity, the structure and properties of this compound were changed from a semiconductor with a 0.57 eV band-gap to a topological insulator with a zero band-gap and a band inversion. The origin of spectral features in this compound with and without the silicon impurity is the electron transition from the p-Si and p-C to d-Sc and s-H, respectively. The values of optical constants are increased in the doped-structure with respect to the pure structure.}, Keywords = {Monolayer Sc2C(OH)2, Optical properties, Silicon impurity, Density functional theory (DFT), MXenes.}, volume = {28}, Number = {2}, pages = {141-144}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2687-en.html}, eprint = {http://opsi.ir/article-1-2687-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {SetodehKheirabady, Meysam and Tavassoly, Mohammad Kazem and Rafeie, Mehr}, title = {Stable macroscopic mechanical entanglement in two distant ‎dissipative optomechanical systems}, abstract ={In this paper, we introduce a method for the generation of stable entanglement between two remote macroscopic mechanical modes in optomechanical systems using Bell-state measurement. Two identical optomechanical systems each driven by an external pump field and comprising a cavity with a movable mirror and a two-level atom. By appropriate choice of frequencies of system's component, effective Hamiltonian is calculated. With considering atomic, photonic and phononic dissipations, the time evolution of each subsystem and also the whole system have been achieved. By measuring suitable Bell state of optical modes on the state of the whole system, entanglement between two macroscopic mechanical modes is created. Calculating concurrence measure for appropriate parameters indicates that a significant and stable degree of entanglement can be achieved.}, Keywords = {Bell-state measurement, Dissipative optomechanical systems, Entanglement generation, Entanglement stability}, volume = {28}, Number = {2}, pages = {145-148}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2767-en.html}, eprint = {http://opsi.ir/article-1-2767-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {setodeh, Meysam and tavassoly, mohammad kazem}, title = {Entanglement of magnon with photon and superconducting qubit in ‎an optical cavity in the presence of Kerr medium}, abstract ={In this paper, the generation of magnon-photon and magnon-superconducting qubit entanglement in an optical cavity and in the presence of Kerr medium have been investigated. By introducing the Hamiltonian and initial state of the system, time-dependent state ket, and also the steady-state ket of the system are achieved. Evaluating concurrence with different parameters shows that stronger coupling between the field and the superconducting qubit necessarily does not lead to a state with a higher amount of entanglement and also, sudden death and revival of the entanglement have been observed. With equal field-magnon and field-qubit couplings, the maximally entangled steady state is accessible.}, Keywords = {Magnon, Optical Kerr effect, Steady state entanglement}, volume = {28}, Number = {2}, pages = {149-152}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2667-en.html}, eprint = {http://opsi.ir/article-1-2667-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Kanafchian, Maryam and eslami, Mansour}, title = {Oscillating and chaotic structures in EIT cavities}, abstract ={Spatially periodic and localized structures in the transverse plane of a medium displaying electromagnetically induced transparency in an optical cavity and under the action of two pumps are investigated. The system supports a multitude of different complex spatial structures depending on the chosen initial condition. We explore regimes of multistable patterns, filaments, stable defects, scrolling structures, nested patterns, fronts, and the spontaneous occurrence of multiple cavity solitons}, Keywords = {EIT, Solitons, Patterns, Chaos, self-defocusing}, volume = {28}, Number = {2}, pages = {153-156}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2698-en.html}, eprint = {http://opsi.ir/article-1-2698-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Momeni-Demneh, Mojgan and Mahdifar, Ali and Roknizadeh, Rasoul}, title = {Control of the nonclassical properties of the two-mode Kerr nonlinear optical system based on the nonlinear coherent states approach}, abstract ={One of the nonlinear optical phenomena which arise out of a χ(3) nonlinearity, is the intensity dependent of the refractive index. In this paper, we describe this phenomenon based on the nonlinear coherent states approach. We have shown that the deformed two-dimensional oscillator algebra can be used to describe this nonlinear optical system. Then, we construct the nonlinear coherent states for this nonlinear optical system and study their quantum statistical properties. Finally, we find that by changing nonlinearity of the media, it is possible to control the nonclassical properties of the system.}, Keywords = {Deformed oscillator algebra, Nonlinear coherent state, Nonlinear optical system}, volume = {28}, Number = {2}, pages = {157-160}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2655-en.html}, eprint = {http://opsi.ir/article-1-2655-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Parvin, Babak}, title = {A Two-Level Laser from Another Viewpoint}, abstract ={The behavior of a two-level atom trapped in a single-mode optical cavity is examined in the steady state. The describing master equation of the system is numerically solved in the atom-cavity basis. The semiclassical and quantum treatments in the atom-cavity system can be derived based on the written equations. The outcomes of the simulations resulting from the master equation confirm the accuracy of these two separate behaviors.}, Keywords = {density matrix, lasing, optical cavity, photon antibunching, two-level atom.}, volume = {28}, Number = {2}, pages = {161-164}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2705-en.html}, eprint = {http://opsi.ir/article-1-2705-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {jafarfard, mohamad reza and abbasi, razieh}, title = {Investigation and comparison on computational methods for phase unwrapping in noisy phase retrieval systems}, abstract ={Obtaining the final phase image in digital holography or quantitative phase microscopy usually has some difficulties due to high percentage of the noise and the high amount of phase of samples. When the phase difference between sample and its medium is more than 2π, the phase image contains many jump in the points out of the range of inverse tangent that called wrapping problem in phase imaging.  Numerous methods have been reported that each of them contains some limitation such as the percentage of the noises.  In this paper we present three numerical method for phase unwrapping using simulation in MATLAB. Firstly, we introduce the three methods named reliability method, minimum network flow method and resistance transfer equation method and we compare these methods by simulating on a Gaussian sample with different percentage of the noises.}, Keywords = {: phase unwrapping, digital holography, phase measurement}, volume = {28}, Number = {2}, pages = {165-168}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2600-en.html}, eprint = {http://opsi.ir/article-1-2600-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Hamidi, Omid and Bahrampour, Alirez}, title = {Bad-Cavity Optomechanical Ground-State Cooling Via quantum interference and a Parity-Time Symmetric}, abstract ={We proposed a fast ground-state optomechanical cooling methodfor a bad optomechanical system. A PT system consists of a gain cavity, whichis coupled to an optomechanical cavity. Also, a quarter-wave plate provideslinear mixing interaction between the optomechanical cavity and the thirdmode. Our proposed system improved the cooling rate by using two methods. The energy localization in the gain cavity and the destructive quantum interference are the important e_ects that enhance the cooling rate. Our most important achievement is that the optomechanical cavity is present in both the bad-cavity limit and the weak optomechanical coupling regime. These innovations can be attained by parameter management of the system.}, Keywords = {optomechanic-bad-cavity-cooling-PT symmetry}, volume = {28}, Number = {2}, pages = {169-172}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2580-en.html}, eprint = {http://opsi.ir/article-1-2580-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Tahsildaran, Fatemeh and Farahbod, Amir Hossei}, title = {Designing the superconducting Fabry-Perot cavity for confinement molecules}, abstract ={A superconducting Fabry-Perot microwave cavity for a molecular trap was designed, constructed, and characterized. By coating the mirror surfaces with a superconducting material, the field strength of 1.06 MVm-1 obtained an unloaded quality factor of up to 1.1×106 at 24.087 GHz was achieved at a temperature of 2.24 K. In this report, we characterize the cavity by measuring the quality factor at a various temperature from 298 K to 3 K.}, Keywords = {Superconducting, Microwave trap, Fabry-Perot , Quality factor.}, volume = {28}, Number = {2}, pages = {173-176}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2599-en.html}, eprint = {http://opsi.ir/article-1-2599-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {akbari, Shahranoob and tavassoly, Mohammad Kazem and ghasemi, Mahnaz}, title = {The influence of dipole-dipole interaction on the entanglement dynamics in a three-atom system}, abstract ={In this paper, we investigate the produced entanglement by performing atom-field interaction in a single-mode cavity. Three two-level atoms (Tavis-Cummings model) interacting with the field in a single-mode cavity. By considering dipole-dipole interaction between each pair of atoms, evolution of the system is studied. Finally, the entanglement of atomic pairs as well as the entanglement of one atom with the other two atoms are calculated via concurrence measure. The results show that the maximum of entanglement is achieved with appropriate choices of the involved parameters. Also, the amounts of produced entanglement after the interaction are acceptable even with selecting the separable initial state for atoms.}, Keywords = {Atom-field interaction, Concurrence, Entanglement, Tavis-Cummings model.}, volume = {28}, Number = {2}, pages = {177-180}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2666-en.html}, eprint = {http://opsi.ir/article-1-2666-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {rastegarzadeh, mojtaba and hassaninadiki, marziyeh and tavassoly, mohammad kazem}, title = {Photon Blockade in Hybrid Optomechanical System in The Presence of Two Qubits}, abstract ={In this paper, we consider an optomechanical system containing of two optical cavities coupled with a mechanical membrane placed between them where any of the optical mode coupled with a qubit. At first, via an unitary transformation, we digonalize part of Hamiltonian corresponding to the system and then, we solve the Schr ̈odinger equation for the total Hamiltonian. Finally, in order to studying photon blockade, we obtain the equal-time second-order correlation function  and investigate the effect of photon tunneling and coupling between optical modes with each qubit on the photon blockade within one of the cavities.}, Keywords = {Equal-time second-order correlation, Photon blockade, Optomechanical system.}, volume = {28}, Number = {2}, pages = {181-184}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2630-en.html}, eprint = {http://opsi.ir/article-1-2630-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {pilehvar, elnaz and Amooghorban, Ehsan and Moravvej-Farshi, Mohammad Kazem}, title = {Investigation of Medium Effects of Bilayer non-Hermitian Structure on the Second-Order Coherence of the Transmitted Number State}, abstract ={In this paper, we investigate the dispersion and medium effects of a bilayer non-Hermitian structure composed of gain and loss layers on an antibunching quantum property of normally incident number states using second quantization, in particular at discrete frequencies that the structure is parity-time (PT)-symmetric. For this purpose, we calculate the second-order coherence of the output state of the structure for a situation in which the incident states on the left and right sides of the structure is the quantum vacuum and number states, respectively. It will be shown that the antibunching property of the incident light can be retained to some extent for small values of loss coefficient.}, Keywords = {Number state, Bilayer parity-time (PT) Symmetric, Second order coherence.}, volume = {28}, Number = {2}, pages = {185-188}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2671-en.html}, eprint = {http://opsi.ir/article-1-2671-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Lotfipour, ‌hoda sadat and khodabandeh, majid and bagheri, zahra and Sobhani, Hass}, title = {Investigation the Second Order Degree of Coherence and Experimental verification of Heralded Single Photon Generation}, abstract ={In this paper, we describe the experimental second-order coherence photons produced in SPDC. First in the experimental set up, the nonlinear BBO crystal generates the twin correlated signal and idler photons. Then for investigation of the light source nature, g2 (0) is obtained experimentally. The results show this value is less than 0.5 which verifies the generated photons are in the heralded single photon regime.}, Keywords = {Spontaneous Parametric Down Conversion (SPDC), second Order Coherence Degree, Heralded single Photon Source}, volume = {28}, Number = {2}, pages = {189-192}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2697-en.html}, eprint = {http://opsi.ir/article-1-2697-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {NikdelYousefi, Negar and Mortezapour, Ali}, title = {Coherent control of the dynamics of Quantum fisher information a two-level atom in a photonic crystal waveguide}, abstract ={In this paper, we investigate a two-level atom (qubit) located in a photonic crystal waveguide. It is assumed that the qubit interacts with a classical driving coupling field and the vacuum electromagnetic modes of the photonic crystal waveguide. Due to the engineering capabilities of the waveguide in the control of the field propagation, we studied the dynamics of quantum fisher information of qubit in this structure. The results showed that with manipulation in the strength of driving coupling field and the optical length of the waveguide, the dynamics of quantum fisher information is controlled.}, Keywords = {Two-level atom, Quantum fisher information, Optical length, Photonic crystal waveguide}, volume = {28}, Number = {2}, pages = {197-200}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2530-en.html}, eprint = {http://opsi.ir/article-1-2530-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {movahedi, razieh and Afshar, davood and jafarpour, mojtab}, title = {Applying single mode non-Gaussian field states to improve the entanglement of atomic states in Tavis-Cummings model}, abstract ={Using Tavis-Cummings model and employing single mode non-Gaussian fields, we investigate the entanglement enhancement of atomic states. Even and odd coherent states have been considered as the field states and the output state has been obtained by Tavis-Cummings Hammilton and time evolution operator. It is observed that to achieve the maximum entanglement of the output atomic state, the choice of even and odd coherent states for the field is a more appropriate option than the usual coherent state.}, Keywords = {Tavis-Cummings model, even and odd coherent state, entanglement, non-Gauassian states}, volume = {28}, Number = {2}, pages = {201-204}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2549-en.html}, eprint = {http://opsi.ir/article-1-2549-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Sadeghi, Parvi}, title = {The Tsalis Entropy in the Quantum Phase Space for the Perturbated Oscillator State}, abstract ={Abstract- Entropy is the most important key in quantum information theory. It measures the order of uncertainty of the physical states of interest. In this paper, the amount of information obtained for the perturbated harmonic oscillator with the generic sixth-order potential in the Wigner and Husimi representations is investigated, therefore, a nonextensive indicator of the Tsalis entropy in the quantum phase space has been utilized on the Wigner and Husimi representation. Finally, a comparison between these entropies and a nonclassical indicator has been carried out and suitable nonextensive indicator of the Tsalis entropy has been determined.}, Keywords = {Keywords: Husimi function, Nonclassical indicator, Perturbated harmonic oscillator, Tsalis entropy, Wigner function.}, volume = {28}, Number = {2}, pages = {205-208}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2648-en.html}, eprint = {http://opsi.ir/article-1-2648-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Sadeghi, Parvi}, title = {T he nonclassical property of the Harmonic Oscillator in the Husimi Representation and the N onlinear F eature of the Potential}, abstract ={Abstract- In this paper, considering the exactly solvable quantum oscillator system, we address the role played by the nonlinearity of their potential in the establishment of nonclassical features. The nonclassical behavior of the states under consideration is investigated using the nonclassical indicator 𝜼, which is based on the interference, in the always positive Husimi representation. We focus on the nonclassicality-nonlinearity relation using the generic sixth-order potential confirming the idea that nonlinearity is a resource for the generation of nonclassicality.}, Keywords = {Ground state of harmonic oscillator. Husimi function, Nonclassicality indicator, Nonlinear potential}, volume = {28}, Number = {2}, pages = {209-212}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2764-en.html}, eprint = {http://opsi.ir/article-1-2764-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {HeidarnezhadGiglu, Arezu and Saadati-Niari, Maghsou}, title = {Population Transfer in the Interaction of X-ray Laser with Three-Level Nuclear Systems using Piecewise Adiabatic Passage.}, abstract ={In this paper piecewise adiabatic passage is used to nuclear-state population transfer in the interaction of the three-level nuclei with X-ray laser. It is shown that using a chain of delayed pulse pairs, the population can be transferred from the first ground state to the second ground state with minimal spontaneous emission effect. Due to the fact that the frequency of existing X-ray lasers is lower than the frequency of gamma transitions, the nuclei are designed to be accelerated to achieve the resonance condition using relativistic Doppler effect. Finally, the effect of time delay between pulse pairs on population transfer efficiency is investigated for 154Gd and 97Tc. Considering the effect of spontaneous emission into the system, the master equation has been used for numerical study.    }, Keywords = {nuclei, piecewise adiabatic passage, time delay, X-ray laser}, volume = {28}, Number = {2}, pages = {213-216}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2704-en.html}, eprint = {http://opsi.ir/article-1-2704-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Jahanbakhsh, Farshid and Tavassoly, Mohammad Kazem}, title = {Entanglement dynamics of two qutrits interacting with a two-mode quantized field: beyond the rotating wave approximation}, abstract ={Considering a system consisting of two qutrits ( -type three-level atoms) interacting with a two-mode quantized field in a high quality cavity and in the presence of counter rotating terms, we solve the time-dependent Schrödinger equation for the mentioned system. Then, we calculate the linear entropy (in order to investigate the entanglement dynamics of different subsystems in the presence and absence of a rotating wave approximation) for this system. Our numerical results show that death and then birth of entanglement occur in some cases. Also, the collapse-revival phenomena are clearly visible in these studies, which the number of them and thus entanglement fluctuations, can be changed according to the different chosen values ​​for the effective parameters in the desired model (in the absence of a rotating wave approximation relative to its presence). In addition, nearly stable entanglement can be observed in some particular conditions.}, Keywords = {Linear entropy, Rotating wave approximation, Quantum entanglement, Jaynes-Cummings model.}, volume = {28}, Number = {2}, pages = {217-220}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2714-en.html}, eprint = {http://opsi.ir/article-1-2714-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {behmard, Fatemeh and Keshavarz, Alireza and Samimi, Saeb}, title = {Two photon absorbtion cross section in quantum imaging}, abstract ={Two-photon capture is used as one of these methods for quantum imaging. Calculation of the absorption cross section is used as an effective parameter in imaging because by increasing the absorption cross section with less photons, the imaging operation can be performed. For this purpose, in this study after Hamiltonian study, the absorption of two photons of two-level atoms and the temporal evolution of the state function are calculated by considering the photon state with entangled polarization, followed by the cross-sectional area of ​​the two-photon absorption of the state function. Because two-photon absorption is used in quantum imaging, the process of two-photon absorption is more likely to be transient when the cross-sectional area increases. In this case, imaging is done with fewer photons.}, Keywords = {Quantum imaging, Two Photon absorption, Two Photon absorption cross section.}, volume = {28}, Number = {2}, pages = {221-224}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2706-en.html}, eprint = {http://opsi.ir/article-1-2706-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {bagheri, Zahra and hodalotfipoor, Hoda sadat and khodabandeh, maji}, title = {Single photon interferometry}, abstract ={The interference of a single photon which is one of the most mysterious concepts of quantum mechanics is studied. Using a nonlinear crystal, a pair of photons by spontaneous parametric down-conversion are produced. One of them passing through a Mach- Zander interferometer due to the principle of indistinguishability of the paths, interferes with itself. An interference pattern is obtained by recording the coincidence between the correlated photons.}, Keywords = {spontaneous parametric down conversion, single photon interferometry, Mach Zehnder interferometer, correlated photons}, volume = {28}, Number = {2}, pages = {225-228}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2661-en.html}, eprint = {http://opsi.ir/article-1-2661-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Kaveh, Hanie and Jahangiri, Fazel}, title = {Low Loss Terahertz Wave Propagation in Porous Core Photonic Crystal Fiber with flattened Dispersion and extremely high‑birefringence}, abstract ={In this paper, a photonic crystal fiber with a suspended elliptic core with slotted air holes is designed for the efficient propagation of Terahertz waves. The proposed configuration leads to a high birefringence, a low loss, and a flat dispersion. The simulation results show that this PCF exhibits an ultrahigh birefringence value of 0.12, a low effective material loss of 0.2〖cm^(-1)〗and 0.08〖cm^(-1)〗and very negligible confinement loss of 10^(-5) 〖cm^(-1)〗and 10^(-3) 〖cm^(-1)〗at 0.8 THz for the X-polarized and Y-polarized modes, respectively. Moreover, the suggested structure provides a very flat dispersion of 0.1±0.1 ps/THz/cm and 0.15±0.15 ps/THz/cm over the frequency range of 1.2 to 1.4 THz for two x and y polarized states, respectively. We believe that our proposed PCF will bring about a promising improvement in polarization-maintaining applications at THz frequencies.}, Keywords = {Birefringence, confinement loss (CL), effective material loss (EML), photonic crystal fiber (PCF), terahertz}, volume = {28}, Number = {2}, pages = {229-232}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2787-en.html}, eprint = {http://opsi.ir/article-1-2787-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {shakeri, somayeh and Mahmoudi, zohre and Hamidi, omid and Bahrampour, Alirez}, title = {PT-symmetry effect- Kerr nonlinearity effect- optomechanical system, Non-Hermitian Hamiltonian}, abstract ={Proposed system includes two optic modes in active and passive cavities. These system are coupled to the mechanical mode simultaneously.Using the weak kerr effect in optomechanical systems, it is proved that the kerr effect is enhanced near the PT broken point.}, Keywords = {Keywords:PT-symmetry effect- Kerr nonlinearity effect- optomechanical system, Non-Hermitian Hamiltonian}, volume = {28}, Number = {2}, pages = {233-236}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2536-en.html}, eprint = {http://opsi.ir/article-1-2536-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Forouzesh, Mohadese and Mortezapour, Ali}, title = {Controlling atom-photon entanglement under frequency modulation}, abstract ={In this study, we investigate the effect of frequency modulation on the dynamic behavior of atom-photon entanglement within a leaky cavity. It has been shown that there are optimal modulation parameters that maintain atom-photon entanglement in the test system for a long time.}, Keywords = {atom-photon entanglement, qubit, frequency modulation}, volume = {28}, Number = {2}, pages = {237-240}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2547-en.html}, eprint = {http://opsi.ir/article-1-2547-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {DadkhahTehrani*, Alireza and Siadati, Seyed Mahdi and Baghdadi, Mohadeseh and SalmaniShik, Somaieh and MajlesAra, Mohammad Hossi}, title = {Design and Simulation of Graphene-based Terahertz Waves Absorbers}, abstract ={In this paper, four metamaterial adsorbent structures in terahertz frequency range are designed and simulated consisting of two types of monolayer graphene pattern on the dielectric surface with a refractive index of 3.5 and a gold substrate. In this simulation, the intensity of the absorption spectrum is increased by changing the Fermi level of graphene. Also, the influence of geometric parameters on the structure of attractions with different patterns has been investigated. The 99% absorption peak at 70 μm is significant in two types of structures. The distribution of electric field in the structures indicates the stimulation and amplification of graphene surface plasmons at this wavelength, which is the main factor in maximum absorption. Suggested adsorbents can be used in sensors and detectors in the terahertz range.}, Keywords = {Metamaterial absorber, Graphene, Surface plasmon, Terahertz waves}, volume = {28}, Number = {2}, pages = {241-244}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2524-en.html}, eprint = {http://opsi.ir/article-1-2524-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Akou, hossein and Heydarzadeh, yeganeh}, title = {Plasma wake wave excitation by a low-frequency extraordinary EM wave}, abstract ={In this paper, the excitation of upper-hybrid wake wave with interaction of an extraordinary Gaussian wave in a cold homogeneous magnetized plasma is investigated. By obtaining the equation governing the plasma wake, the dependency of the wake amplitude on the parameters is studied. It is observed that larger wake oscillation takes place when the pulse length is approximately close to   and the X-wave frequency is greater than ω_p, which means that the phase velocity is less than the speed of light in vacuum.}, Keywords = {Magnetized plasma, wake field generation, electromagnetic wave, extraordinary wave,}, volume = {28}, Number = {2}, pages = {245-248}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2783-en.html}, eprint = {http://opsi.ir/article-1-2783-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {sivandipour, Mahdi and Golshani, Mojtaba and Zandi, mohammad hossei}, title = {Parity-time symmetry breaking point in a ladder waveguide array with Fibonacci refractive index pattern}, abstract ={In this paper, the propagation pattern of the light in a PT-symmetry ladder optical waveguide array with a Fibonacci refractive index profile is investigated. After that, using a criterion based on light intensity, the PT-symmetry breaking point is calculated at different propagation constant values. Numerical results show that the PT-symmetry breaking point has a maximum at a certain value of the propagation constant}, Keywords = {: Ladder waveguides array, Fibonacci refractive index pattern, Parity-time symmetry, PT-symmetry Breaking point.}, volume = {28}, Number = {2}, pages = {249-252}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2649-en.html}, eprint = {http://opsi.ir/article-1-2649-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Samadi, Nasim and Arefinia, Zahra and Sahrai, Mostaf}, title = {Coherent control of group velocity via tunneling effect in quantum dot molecule}, abstract ={Semiconductor nanostructures have been proposed as novel optical switching systems in telecommunication systems due to their unique electrical and optical properties. In this paper, the effect of tunneling on probe field absorption and dispersion for a quantum dot molecule is investigated. The results show that applying voltage gate affects on probe beam propagation, and thus its absorption, dispersion and group velocity. By applying gate voltages, absorption and dispersion may change with the tunneling effect, and light propagation from superluminal to subluminal can be switched.}, Keywords = {Tunneling, Superluminal, Subluminal, Quantum dot nanostructures}, volume = {28}, Number = {2}, pages = {253-256}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2757-en.html}, eprint = {http://opsi.ir/article-1-2757-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {bahrami, mahboube and pakarzadeh, hasan and hatami, mohse}, title = {Supercontinuum generation in terahertz region using a silicon-based rib waveguide}, abstract ={ Abstract-In this paper, supercontinuum generation in terahertz region in a silicon-based rib waveguide is simulated via solving the generalized nonlinear Schrödinger equation (GNLSE). First, a silicon waveguide with a zero-dispersion wavelength in the terahertz region is designed with the help of Lumerical software and then its linear and nonlinear parameters   such as loss, nonlinear parameter and high-order dispersion are calculated. Finally, terahertz supercontinuum spectrum, with the help of MATLAB software via the split-step Fourier (SSF) method is simulated and the effects of different parameters such as input pulse power, pulse width and length of waveguide are investigated.}, Keywords = {Supercontinuum generation, Terahertz, Silicon-based waveguide.}, volume = {28}, Number = {2}, pages = {257-260}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2715-en.html}, eprint = {http://opsi.ir/article-1-2715-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Tahsildaran, Fatemeh}, title = {Assignment the Resonance Modes of a Microwave Cavity}, abstract ={In the present project, resonance modes of the microwave cavity for trapping molecules were assigned. The distance between of the mirrors is exactly 60 mm can be varied by ±5 mm in order to achieve the resonator mode close to the molecular transition frequency. TEM00q mode is chosen to minimize the diffraction losses as it to be used for strong trapping NH3 molecules. The electric field has nine antinodes located along the length of the cavity as there are no transverse excitation.}, Keywords = {Microwave Cavity, Spectrometry, Frequency Mode, Ammonia Molecule.}, volume = {28}, Number = {2}, pages = {261-264}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2590-en.html}, eprint = {http://opsi.ir/article-1-2590-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Jahangiri, Fazel and Hassani, Mohamad and Mohamadi, Marzieh}, title = {Coherent Amplification of Terahertz Radiation Generated by Optical Rectification of Ultrashort Laser Pulses in Carbon Nanotubes}, abstract ={Chiral carbon nanotubes have significant second-order nonlinear optical properties and can be used to produce terahertz radiation through the optical rectification process. But achieving high efficiency requires the provision of coherent amplification conditions along the gain medium and adjustment of the phase velocity of terahertz wave produced and the group velocity of laser wave of the pump. In this article, we examine the above conditions. For this purpose, the factors affecting this phenomenon include the scattering behavior of carbon nanotubes in the visible frequency range and terahertz range, the laser pulse length used and the effective length of carbon nanotubes are obtained and optimized.[D1]  We also examine the spectra and time profile of the terahertz field for different lengths of the environment using the theoretical foundations used.}, Keywords = {: Nonlinear optics, terahertz radiation, ultra-short laser, carbon nanotubes, optical rectifier}, volume = {28}, Number = {2}, pages = {265-268}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2559-en.html}, eprint = {http://opsi.ir/article-1-2559-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Rahimi, PARVIN and Mahdifar, Ali and Amooghorban, Ehs}, title = {Investigation of the dynamics of entanglement between atoms in the presence of bilayers with parity and time reversal symmetry}, abstract ={In this paper, we investigate the entanglement between two-level atoms in the presence of a bilayer structure with parity and time reversal symmetry using the effective medium theory in quantum optics. To do this, we consider two bilayer structures, one of them is composed of identical gain and loss layers and the other one of nonidentical layers. We model dissipation, amplification and dispersion properties of layers with Lorentz model and use effective optical parameters to calculate the electromagnetic Green tensor of the system. Then by calculating the collective damping rates and spontaneous emission rate of atomic subsystem, we obtain the concurrence for the situation that only one of the atoms is excited. It is shown that the atomic system is entangled in larger time interval rather than the systems without the PT-symmetric layers.}, Keywords = {Entanglement, PT-symmetric systems, Effective medium theory.}, volume = {28}, Number = {2}, pages = {269-272}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2553-en.html}, eprint = {http://opsi.ir/article-1-2553-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Norouzi, Milad and Hosseiny, Seyed Mohammad and SEYEDYAZDI, JAMILEH and Qamat, Mohammad Hossein and Kabi, Mil}, title = {Photon Pair Entanglement in the Quantum Two Modes Squeezed Radar}, abstract ={Abstract- Entanglement is the heart of quantum radar and the key component of a quantum two modes squeezed (QTMS) radar, is the entangled photon pair generation source, the Josephson parametric amplifier (JPA). Using entanglement measurement tools in quantum optics, the research field focuses on investigating the entanglement behavior of JPA output with respect to QTMS radar environment temperature. The entanglement disappears by increasing temperature, but the entanglement is maintained in the QTMS radar by increasing the squeezing parameter and removing the squeezing angle.}, Keywords = {Entanglement, Entangled photon pair, Quantum correlation, Quantum radar, Two modes squeezed.}, volume = {28}, Number = {2}, pages = {273-277}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2555-en.html}, eprint = {http://opsi.ir/article-1-2555-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {GholizadehArashti, maryam and fakharpour, mahs}, title = {Evaluation of optical behavior of aluminum nanostructure}, abstract ={In this paper, the behavior of aluminum nanostructure with zigzag morphology under linear polarized incident light were obtained by the transmission matrix method. For nanostructure by the arms more than 4, nuder s-polarized light,  and incident light angle 60°, Bragg peaks were observed, that the numbers depend on the period of the structure. Also, in absorption spectra for p-polarization by increasing the number of arms, depend on the length of effective arm in the direction of the electric field, the peaks shift towards longer or shorter}, Keywords = {Aluminum, transmission matrix, nanostructure, polarized light}, volume = {28}, Number = {2}, pages = {278-281}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2674-en.html}, eprint = {http://opsi.ir/article-1-2674-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Nahvifard, elahe and fathi, Milad and jandaghi, Maryam and Hajinia, Elmir}, title = {Investigation of 3D structure fabrications in optical transparent materials using picoseconds lasers}, abstract ={Abstract- In recent years, it has become possible to access high-power lasers with an ultra-short time range. One of the most important issues related to ultra-short lasers is their interaction with transparent materials. The interaction of picoseconds laser pulses with glass changes the density and refractive index of the irradiated region. Because the interaction is localized, the areas around the focus remain unchanged. This feature can be used to build optical devices such as waveguides. In this paper, the interaction of ten picoseconds laser pulses with glass (BK7) in the laboratory is investigated and the laboratory results are presented for the construction of waveguides.}, Keywords = {Keywords: picoseconds lasers, optical transparent material, waveguide}, volume = {28}, Number = {2}, pages = {282-285}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2739-en.html}, eprint = {http://opsi.ir/article-1-2739-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Mobashery, Abolhasan and Moosavi, Seyed Ayoob and Arjmand, mojtab}, title = {Generating laser line of diode laser by means of Powell lens: simulation and experimental results}, abstract ={In this paper, converting the spot light of LiDAR diode laser of self-driving cars (automotive) into a uniform linear beam is investigated. The technique used for this beam shaping is the use of Powell non-spherical lenses. To ensure the uniformity of intensity along the laser line, two critical parameters, the radius of curvature and conic constant, are obtained by optimization. Simulation of collimator lens and Powell lens were carried out in Zimax optical software by using the laser diode output ray data. Performing the optimization show that choosing large values for conic constant and selecting radius size smaller than laser spot size, result in a better uniformity of beam intensity. The laboratory results confirm the accuracy of the design and simulation process.}, Keywords = {conic constant, beam shaping, Powell lens, LiDAR}, volume = {28}, Number = {2}, pages = {286-289}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2682-en.html}, eprint = {http://opsi.ir/article-1-2682-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {ozare, somayeh and kargariaan, Amene}, title = {Design and Fabrication of Polymer Planar Optical Waveguides using PET substrate}, abstract ={In this work, design, fabrication and properties of polymer optical planar waveguide made of photoresist deposited on PET foil substrate is reported.  The waveguide equations are solved by finite element method (FEM) and transmission spectra of waveguide is simulated by Macleod software. Afterward, the waveguide is fabricated by spin coating method in the laboratory and its transmission spectra is measured.  The results show that the SU-8-2050 has the higher transparency than the substrate, and SU-8-2050 deposited on PET substrate increases transmission spectra.}, Keywords = {refractive index, Polymer, Waveguide, PET}, volume = {28}, Number = {2}, pages = {289-292}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2719-en.html}, eprint = {http://opsi.ir/article-1-2719-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Heidari, mohammad and Falah, Hamidreza and Hajimahmoodzadeh, Mortez}, title = {Design of objective part of an urethroscope system}, abstract ={In this article, the design of objective part of an urethroscope system, which images the internal organs of the body, is presented. At beginning, the object was considered at infinity and maximum field of view of 100 degrees was selected. Parameters such as material, thickness and radius of curvature of the lenses and the distance between them were considered as the main variables and the value of MTF was considered as the optimizing goal. The results of the design steps performed with Zemax software show the achievement of appropriate quality in the final system.}, Keywords = {Aberrations, objective system, lense, urethroscope, MTF}, volume = {28}, Number = {2}, pages = {293-296}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2641-en.html}, eprint = {http://opsi.ir/article-1-2641-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {salehi, Hamdolah and kordestani, Elham}, title = {Study Optical Property of Cubic BiFeO3}, abstract ={ In this study, investigated the optical properties of BiFeO3 by useing the full potential linearized augmented plan wave (FP-LAPW) in framework density functional theory(DFT) with wien2k code. The optical properties such as real and imaginary parts of dielectric function, refractive index, extinction coefficient have been calculated and studied. The results show that of cubic ferrite bismuth is a metalic. Since compound has magnetic properties, all calculations of compound is performed in full spin.}, Keywords = {: Optical Property, Ferrite Bismuth, Density Functional Theory.}, volume = {28}, Number = {2}, pages = {297-300}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2689-en.html}, eprint = {http://opsi.ir/article-1-2689-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Borzouei, Hadi and Borzouei, Hadi and Kohan, Mostaf}, title = {Optical design of high temperature camera}, abstract ={Monitoring inside the furnace and seeing the flame with the visible camera is important for the control office. The electronic and optical components are damaged at high temperatures. In this work, the endoscopic geometry is used to see inside the furnace, and the image of the furnace is transmitted out of the furnace by the Newtonian telescope. The CCD sensor and electronic components are located outside the furnace. The part of the camera that is located in the furnace is cooled by blowing air with a pressure of 7 atmospheres and the high-temperature camera can withstand temperatures of 1100 degrees Celsius. The field of view visible by this camera is ±16 degrees and could see the 4-meter opening of the furnace, the full effective length of the burner, and the original flame to be seen in color in the control office.}, Keywords = {high temperature camera, flame imaging, endoscope, color CCD}, volume = {28}, Number = {2}, pages = {302-305}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2658-en.html}, eprint = {http://opsi.ir/article-1-2658-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {sabatyan, Arash and Jalali, Sharareh}, title = {Investigation of optical vortex interference using Mach Zander\'s interferometer}, abstract ={    Abstract- In this paper, The superposition of optical vortex beams will be examined. In order to produce, optical vortex beams, we used of Fresnel spiral regional plates and superposition of optical vortex beams, we used Fresnel spiral zone plates and studied the overlap of the optical vortex beams resulting from the spiral fresnel zonal plates inside the focus. The result is the production of  huge variety of optical vortex beams with different intensities, that can carry integer and fractional topological charges}, Keywords = {Keywords: Fresnel spiral regional plates, Optical vortex beams, Superposition, Topological charge}, volume = {28}, Number = {2}, pages = {310-313}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2548-en.html}, eprint = {http://opsi.ir/article-1-2548-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Masoumi, Najma and Afkhami, Marziyeh and Zakery, Abdolnasser}, title = {Design of compact multi-spectral telescope consisting of Cassegrain- telescope and a concave elliptical grating}, abstract ={Our aim in this paper is to design an optimal multispectral telescope with the lowest possible aberration and volume and the highest image quality in the near-visible and infrared wavelength region (VNIR) with a field of view of 0-3 degrees in the wavelength range of 0.48-0.82 micrometers. The new design and simulation is a compact multispectral telescope with the Cassegrain telescope and a concave elliptical grating with low volume and lightweight with a simple structure. This new design is without the need for a field-sharpening lens and has better image quality than other multispectral telescope designs reported so far. For this purpose, the Schmidt Cassegrain Telescope was first designed. The transitional elliptical concave grating can reduce the number of optical components. This simulated multispectral telescope can receive images and obtain spectral information. Modulation transfer function diagrams (MTFs) are reported to check image quality, point diagrams to show spectral separation, and field curvature diagrams to report system aberration. The results show that spectral resolution with excellent image quality is achieved with the least possible aberration.}, Keywords = {Compact multispectral telescope, Elliptical Concave grating, MTF, Field curvature, Aberration}, volume = {28}, Number = {2}, pages = {314-317}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2762-en.html}, eprint = {http://opsi.ir/article-1-2762-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {maasoomi, Najma and Ebrahimi, Mojtaba and Zakery, Abdolnaser}, title = {Design of Low Cost Smartphone Spectrometer}, abstract ={In this paper, the advantages of using concentric circular diffraction grating with equal spaces compared to linear diffraction grating in smartphone-based methods are investigated. Their image-formation properties are described, and we examine the effects of linear and circular diffraction grating aberrations for spectrometer-based smartphones. Data collection is done by the smartphone camera, so we need to have the image with the least amount of aberration and the highest image quality. With circular diffraction gratings, the curvature of the field, the distortion aberration, and the wavefront aberration are reduced. Therefore, the most suitable system for making this type of spectrometer is the use of circular diffraction gratings.}, Keywords = {Low cost spectrometer, circular diffraction grating, Zemax}, volume = {28}, Number = {2}, pages = {318-321}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2614-en.html}, eprint = {http://opsi.ir/article-1-2614-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Shooshtari, Leyla and Mohammadpour, Raheleh and IrajiZad, Azam}, title = {Nanostructured Self-Powered Photodetectors by Triboelectric Nanogenerators}, abstract ={Photodetectors, as one of the most significant types of sensors in the technology and the health detecting are essential devices. In the other hand, the self-powered detectors are necessary due to importance of the integrated devices circuits. Harvesting the mechanical body motion is one of the best choice for the using for the power generation called triboelectric nanogenerators. In this project, the SnS2/Perovskite planar photodetector has been fabricated and then powered by the tapping the Kapton on the FTO and hand on the FTO, separately. The D* parameter is evaluated about 22 and 450 (10 10 Jones) for each self-powered SnS2/PVK devices, respectively under the white light emission.}, Keywords = {Photodetector, Self-powered devices, Triboelectric nanogenerator}, volume = {28}, Number = {2}, pages = {322-325}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2620-en.html}, eprint = {http://opsi.ir/article-1-2620-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {NejadZangeneh, Madine and Ghorashi, S.M.B and ghasemi, mohse}, title = {Investigation of the effect of V2O5 layer on the optical properties of semitransparent perovskite solar cell based on MoO3/Au/V2O5 electrode}, abstract ={In this work, a semitransparent perovskite solar cell based on transparent conductive electrode MoO3/Au/V2O5 with the structure of Glass/ITO/TiO2/CH3NH3PbI3/Spiro-OMeTAD/MoO3/Au/V2O5 was considered, and the effect of changing the thickness of the V2O5 layer was investigated by calculating its optical properties using the optics of thin films and the Smith method. Finally, the maximum short circuit current density was obtained for a thickness of 35 nm of the V2O5 layer.}, Keywords = {In this work, a semitransparent perovskite solar cell based on transparent conductive electrode MoO3/Au/V2O5 with the structure of Glass/ITO/TiO2/CH3NH3PbI3/Spiro-OMeTAD/MoO3/Au/V2O5 was considered, and the effect of changing the thickness of the V2O5 lay}, volume = {28}, Number = {2}, pages = {326-329}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2743-en.html}, eprint = {http://opsi.ir/article-1-2743-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Mohammadpour, Raheleh and Mahmoodpour, sajjad and Shooshtari, leyla and Taghavinia, Nim}, title = {Fabrication and charachterization of Perovskite-TiO2 photodetector employing of slot-die printing}, abstract ={In this paper, the sensor results obtained from a perovskite layer printed by slot-die method and also the perovskite layer printed on the mesoporous layer of titanium dioxide are compared. The perovskite layer has interesting and unique properties as an adsorbent layer. According to the results of this study, the perovskite layer printed with a thickness of 480 nm on a titanium dioxide layer with a thickness of approximately 450 nm as a light sensor has a sensitivity of 5000 times higher than the meso-porous titanium layer. Considering the many advantages in using this layer and applying the printing technique, we examined the photo-sensor properties of this category.}, Keywords = {Perovskite, Photo sensor, Titanium dioxide. Slot-die printing}, volume = {28}, Number = {2}, pages = {330-333}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2546-en.html}, eprint = {http://opsi.ir/article-1-2546-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {AllahyariIgdir, Mahsa and Habibiyan, hamidreza and parvin, Parviz}, title = {Design and Simulation of communicational 32 × 32 Channels 50GH Arrayed Waveguide Grating}, abstract ={In this paper, we simulate a 32-channel arrayed waveguide grating. Arrayed waveguide gratings are in used as wavelength multi/demultiplexers in optical communication. According to the advantages of this method, Arrayed waveguide grating becomes an applied method in dense wavelength division multiplexing systems. In this method, using wave phenomena including optical path difference and interference, wavelength multi/demultiplexing is performed. The proposed Arrayed waveguide grating is designed for the C-band frequency range, with a central wavelength of 1555 nm. The size of this structure, channel spacing, crosstalk, and insertion loss are 12 × 10.5 mm2, 50 GH, -28.12 dB, 4.98 dB, respectively.}, Keywords = {Phased arrays, Arrayed waveguide grating, Multi/Demultiplexing, Photonic integrated circuit}, volume = {28}, Number = {2}, pages = {334-338}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2688-en.html}, eprint = {http://opsi.ir/article-1-2688-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {fallah, kimiya and Yekekar, Farzaneh and taghiyan, shima and ghafari, bizhan and saberimoghadam, Reza and keshtmand, razieh and NorouzianAlam, Shahab}, title = {The effect of MaPbI_3 perovskite film thickness on photoluminescence}, abstract ={Nowadays perovskite nano materials due to unique optical properties attract sighnificant interest. Amongst the factors affecting the performance of perovskite films is the morphology of perovskite layers. One of the factores influencing the morphology of perovskite layers is thickness. In this paper, the effect of velocity change in the second stage of two-stage coating on the thickness and surface morphology of perovskite film was investigated. The result is that the perovskite created by the first velocity of 1000 rpm/s and second velocity of 5000 rpm/s in compared to other cases, has a crystal structure with minimum effect and a high intensity of photoluminescence spectrum.}, Keywords = {perovskite, thin film, MAPbI3, thickness, speed of coating}, volume = {28}, Number = {2}, pages = {339-342}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2675-en.html}, eprint = {http://opsi.ir/article-1-2675-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {hamedi, samaneh and Hassani, Maryam}, title = {Fabrication of a Resistive photodetector based on Interdigitated Electrodes with CdS}, abstract ={In this paper, a photo detector based on the resistance change for visible wavelengths is fabricated. In the fabricated detector, interdigitated electrodes (IDE) made of copper (Cu) on a PCB board is used. CdS as the photosensitive layer is deposited on IDE electrodes. The resistance of the detector decreases in the response of the optical wavelengths of green (530nm), red (650nm) and white at room temperature. So, it indicates that the mentioned detector works based on the resistance change. The maximum responsivity is about 96.9% related to the wavelength of 530nm. Also, the recovery time of the green wavelength is longer compared to other optical wavelengths due to the higher absorption.}, Keywords = {Optical detector, interdigitated electrode, visible wavelength, CdS}, volume = {28}, Number = {2}, pages = {343-346}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2730-en.html}, eprint = {http://opsi.ir/article-1-2730-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {sadeghilar, elmira and mirershadi, soghra and sattari, farhad and Maleki, saee}, title = {Study on optical properties of CH3NH3PbI2Cl organic-inorganic hybrid structure due to use in photodetectors}, abstract ={    Abstract- This paper investigates the optical properties of organic-inorganic hybrid structure to utilize and design photodetectors. According this research, this structure has energy gap equal to 2.81ev. Its absobtion peak and starting point of absorbsion are 350 nm and 450 nm, this structure has luminescence at the 530 and 542nm. The results show due to high mechanical resistance, significant electric strength and cost- efficiency, the organic- inorganic hybrid has a promising potential to be used in modern photodetectors with small dimension.}, Keywords = {Keywords: Photodetector, perovskite, tow_dimensional layered structure, optoelectronic device.}, volume = {28}, Number = {2}, pages = {347-350}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2763-en.html}, eprint = {http://opsi.ir/article-1-2763-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Yekekar, Farzaneh and fallah, kimia and taghiyan, shima and ghafari, bigan and saberi, Reza and Keshtmand, Raziye and NorouzianAlam, Shahab}, title = {The effect of MaPbI3 perovskite film thickness on photoluminescence}, abstract ={Nowadays, perovskite nanomaterials have received a lot of attention due to their good optoelectronic properties. One of the factors affecting the formation of the perovskite layer is the morphology of the perovskite surface. The annealing temperature can affect the surface morphology. In this study, in order to find the optimal annealing temperature for lead-iodide methyl ammonium MAPbI3 three annealing temperatures of 80, 100 and 150 ° C, scanning electron microscope image and their photoluminescence spectrum were investigated. In the end, as a result of the best annealing temperature in this experiment, a temperature of 100 ° C was obtained, which was confirmed by high photoluminescence intensity with a more uniform surface than other cases.}, Keywords = {thin film, MAPbI_3 annealing, thermal annealing}, volume = {28}, Number = {2}, pages = {351-354}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2625-en.html}, eprint = {http://opsi.ir/article-1-2625-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {abbasvandkashtiban, mostafa and shojaei, saee}, title = {The investigation of optoelectronic properties of Perovskite semiconductor hetero structure of MaSnI3/CsPbI3}, abstract ={In this study, we first considered the optoelectronic properties of two perovskite unit cells (MaSnI3 and CsPbI3) separately and then the effects of perovskite heterojunction structure formation (MaSnI3 / CsPbI3) on their optical and electronic properties were studied. The studied heterojunction structure is composed of unit cells of the mentioned perovskites (MaSnI3 and CsPbI3) which by changing the number of cells of the heterojunction structure unit, we see a change in the gap of the whole system and also these changes in the gap will cause displacement in the absorption peak.}, Keywords = {heterojunction structure, optoelectronic properties, organic-inorganic perovskite}, volume = {28}, Number = {2}, pages = {355-358}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2737-en.html}, eprint = {http://opsi.ir/article-1-2737-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Esfandiar, Ali}, title = {[1] P. Cambou, J.-L. Jaffard, “CMOS Image Sensors - Status of the CMOS Image Sensor Industry report," Yole Developpment, 2015. M. Lundstrom, Fundamentals of Carrier Transport, p. 44, Cambridge University Press, 2000. [2] A. Nathan, A. Ahnood, M. T. Cole, Y. Suzuki, P. Hiralal,F.Bonaccorso,T. Hasan, L. Garcia-Gancedo, A. Dyadyusha, S. Haque, P. Andrew, S. Hofmann, J. Moultrie, A. J. Flewitt, A. C. Ferrari, M. J. Kelly, J.Robertson,G. A. J. Amaratunga, and W. I. Milne, “Flexible Electronics:The Next biquitous Platform," Proceedings of the IEEE,vol.100, pp. 1486-1517, 2012. [3] Ye, T.; Li, J. Z.; Li, D. H. Charge-accumulation effect in transition metal dichalcogenide heterobilayers. Small 2019, 15, 1902424 [4] K. S. Novoselov, A. K. Geim, S. V. Morozov, D. Jiang, Y. Zhang, S. V. Dubonos, I. V. Grigorieva, A. A. Firsov, Science 2004, 306, 666. Y. Peng, Z. Meng, C. Zhong, J. Lu, W. Yu, Y. Jia, Y. Qian, Chem.Lett. 2001, 30, 772. [6] Luo, H.; Wang, B. L.; Wang, E. Z.; Wang, X. W.; Sun, Y. F.; Li, Q. Q.; Fan, S. S.; Cheng, C.; Liu, K. Phase-transitionmodulated, high-performance dualmode photodetectors based on WSe2/VO2 heterojunctions. Appl. Phys. Rev. 2019, 6, 041407 [7] Luo, H.; Wang, B. L.; Wang, E. Z.; Wang, X. W.; Sun, Y. F.; Liu, K. High-responsivity photovoltaic photodetectors based on MoTe2/ MoSe2 van der Waals heterojunctions. Crystals 2019, 9, 315.}, abstract ={Abstract - In this study, pure zinc oxide nanoparticles and nickel-doped zinc oxide nanoparticles were prepared by sol-gel method and graphene quantum dots were prepared by pyrolysis method. Core-Shell structure, ZnO (pure and with nickel impurity)-graphene quantum dots was synthesized. The optical properties of these nanoparticles were studied by photoluminescence spectroscopy. According to the results, the contamination of zinc oxide with nickel element leads to a decrease in the peak intensity of ZnO emissions, but with the addition of quantum dots graphene, the intensity of emission peak increases. In the morphology study, the shape of the synthesized particles was investigated by scanning electron microscopy.}, Keywords = {ZnO, Nickel doped ZnO, Core-shell structure, Graphene quantum dots, Photoluminescence}, volume = {28}, Number = {2}, pages = {359-362}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2521-en.html}, eprint = {http://opsi.ir/article-1-2521-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {ghodrati, Maryam and Mir, Ali and Farmani, Ali}, title = {Using of 2D Material MXene to improve the performance of label-free Surface Plasmon Resonance biosensor}, abstract ={Abstract- In this paper, we propose a surface plasmon resonance (SPR) biosensor based on the two-dimensional (2D) material Ti3C2Tx MXene. The proposed biosensor is a free space structure using the Kretschmann configuration. This structure consists of BK7 prism, silver (Ag), tungsten disulfide (WS2), graphene, Ti3C2Tx MXene, and the sensing medium. The proposed biosensor is investigated using the numerical method of finite-difference time-domain (FDTD). The numerical results indicate that the sensitivity, the figure of merit (FOM), and detection accuracy (DA) are 186.20 deg/ RIU, 43.40 RIU-1, and 0.233 1/deg, respectively at 633 nm wavelength.}, Keywords = {Surface plasmon resonance, sensitivity, biosensor, 2D material}, volume = {28}, Number = {2}, pages = {363-369}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2736-en.html}, eprint = {http://opsi.ir/article-1-2736-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {sajjadian, tahereh and Mohammad, yaser and Sadrolhosseini, Amir reza and Kazemzad, Seyedeh Mehri}, title = {Increasing the photocatalyst efficiency in the methylene blue host medium using a hybrid nanoparticle-quantum dot system}, abstract ={Along with the aggravation of environmental problems of water pollution, conversion of solar energy through photocatalysis has received much attention in the field of water treatment. Photocatalysis is known as a "green" energy conversion technology in the field of clean and inexhaustible energy. Quantum dots (QDs), due to their unique properties, can be used in the design of high-efficiency photocatalysts and play important roles such as electron mediation, spectral converter and sensitizer. In this study, using a sample layered with titanium dioxide (TiO2), carbon quantum dots (CQDs) and Ag nanowires , we were able to achieve a high percentage of degradation}, Keywords = {Photocatalyst, water treatment, titanium dioxide (TiO2), carbon quantum dots (CQDs), Ag nanowires}, volume = {28}, Number = {2}, pages = {385-388}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2597-en.html}, eprint = {http://opsi.ir/article-1-2597-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Rezaeian, Amene and Hosseinifarzad, Mahmoo}, title = {Investigation of magneto-plasmonic induced transparency (MPIT) phenomenon in magneto-optical heterostructures}, abstract ={In this paper, we propose magneto-optical structures consisting of two magneto-plasmonic layers that separated with each other by metal and dielectric spacers in Kretschmann configuration. The interaction between both magneto-plasmonic layers lead to appearance a new peak in the TMOKE angular curve, whose position and its value strongly depends on the material and thichness of spacer. We interpret this new peak to the magneto-plasmonic induced transparency (MPIT) phenomenon.  }, Keywords = {Kretschmann configuration, magneto-optical structures and magneto-plasmonic induced transparency (MPIT)}, volume = {28}, Number = {2}, pages = {389-392}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2579-en.html}, eprint = {http://opsi.ir/article-1-2579-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Davami, Amir and ShahrokhAbadi, Mohammad Hadi}, title = {Investigating the Effect of Blue Phosphorene-MX2 (MoS2,WS2, MoSe2,WSe2) Vander Waals Heterostructure on the Enhancements Sensitivity of an SPR-Biosensor}, abstract ={  In this paper, the effect of Blue Phosphorene - transition metal dichalcogenides (Blue P-TMDs) van der Waals (vdW) Heterostructure layer with different thickness on the structure of surface plasmon resonance (SPR) biosensor in a Lumerical software environment is simulated and investigated. The main structure is based on the structure of Kretschmann and the use of the BK7 prism, the gold(Au) layer, and the end layer of Blue P-TMDs or Blue P-MX2(MoS2, MoSe2,WS2,WSe2). It was observed that the minimum reflectance of 0.002 is achieved for Au(30nm) / Blue P-WSe2(6-Layer). The combination also yields a sensitivity of 151.88°/RIU for Δn = 0.009 with a great detection accuracy of 0.087. While the main objective of this paper is to enhance sensitivity by proposing a new structure, the quality factor  is almost high and acceptable.}, Keywords = {Surface Plasmon Resonance, Blue P-TMDs or Blue P-MX2 vdW heterostructure, Reflectance, Sensitivity, Biosensor}, volume = {28}, Number = {2}, pages = {393-396}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2584-en.html}, eprint = {http://opsi.ir/article-1-2584-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Hasanpour, Mohammad reza and GhorbanZadeh, Mostaf}, title = {Investigation of plasmonic mode Coupling of two Gold Nano-strips}, abstract ={In this paper, by coupling two gold strips we propose a new platform for sensing and trapping nanoparticles that benefit from enhanced and confined propagating surface plasmons with different mode profiles. We study the plasmonic modes that can be excited between these two coupled gold strips by the Finite difference eigenmode (FDE) method. We show that, in this Metal-Insulator-Metal (MIM) structure, the plasmonic mode profiles, effective refractive index (neff), and loss factor, strongly depend on insulator material (or sensing medium), the dimension of the structure, and the illuminated source frequency.}, Keywords = {Effective refractive index, loss, opto-sensor, surface plasmons, waveguide coupling.}, volume = {28}, Number = {2}, pages = {397-400}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2567-en.html}, eprint = {http://opsi.ir/article-1-2567-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Farmani, Ali and mir, Ali and hamolehalipour, abas and fouladvand, morid ali and hamidi, abdosam}, title = {Numerical analysis of silver-silicon dioxide Four-Band plasmonic nanosensor for Industrial NH3 and Urea Detectionin near infrared wavelength range}, abstract ={Abstract- In this paper, the simulation of light propagation of light with magnetic polarization in four-band plasmonic sensor for detection of industrial ammonia and urea is investigated. The nano-sensor is based on metal-dielectric-metal. The operation of the proposed sensor is based on exposure the sample with different refractive indexes, electromagnetic resonances is generated and the change of the peaks describes the mechanism for detecting chemicals material. The plasmonic metasurface have several advantages such as label free detection, nano-structure, suitable responsibility to chemicals material and good tunability. Simulation is investigated based on numerical analysis using CST.}, Keywords = {Electromagnetic Polarizat , Label Free, Plasmonic Metasurface , Tunability}, volume = {28}, Number = {2}, pages = {401-404}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2628-en.html}, eprint = {http://opsi.ir/article-1-2628-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {rahnamafar, masoud and ghorbanzadeh, mostaf}, title = {Tuning the Plasmonic Modes of Discretely Biased Graphene Nanoholes: Application to Optical Tweezers}, abstract ={Abstract- In this paper we investigate the possibility of controlling excited plasmonic modes in a linear array of nanoholes formed in a 2D graphene sheet. The intensity of the electric field at the edges of the nanoholes at different chemical potentials by applying a plane wave has been calculated. We have shown that a shift in the intensity and the position of the plasmonic modes occur at the optimum wavelength and chemical potential of 7.2 μm and 0.6 eV. The development of this structure could realize a device for the detection and trapping of nanoparticles at the edges of graphene nanoholes in a controlled manner.}, Keywords = {Graphene, Nano-hole, Optical Force, Optical Tweezer, Surface Plasmon}, volume = {28}, Number = {2}, pages = {405-408}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2571-en.html}, eprint = {http://opsi.ir/article-1-2571-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {mohajerani, ezeddin and Mohammadimasoudi, Mohammad and Mehrzad, Hossein and Monavar, Razieh Sadat}, title = {Surface plasmon resonance sensor based on phase modulation using interference imaging method}, abstract ={In this paper, a surface plasmon resonance (SPR) interferometer sensor is designed based on phase modulation. Phase interfereometery between s and p polarizations, as a probe and reference, is the basise of this optical set up. This sensor is able to detect interference phase shifts due to refractive index changes. This system is considered as a high sensitivity refractive index sensor, which is cheap and does not require a mechanical rotation stage or spectrometer.}, Keywords = {Plasmonic, Interferometer, Surface Plasmon Resonance}, volume = {28}, Number = {2}, pages = {409-412}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2572-en.html}, eprint = {http://opsi.ir/article-1-2572-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Madadi, Zahr}, title = {A plasmonic perfect absorber-based sensor independent of polarization and incident angle}, abstract ={In this paper, a plasmonic perfect absorber based on metal-insulator-metal nanostructure with a periodic array of specific apertures in its upper metal layer is proposed. The absorption spectrum of the structure is calculated using the three-dimensional finite difference time domain (3D FDTD) numerical method for the vertical incidence of the plane wave beam in the range of 850 nm to 1300 nm. According to the results, the proposed absorber is not sensitive to the polarization of light in vertical radiation, and in both transverse electric (TE) and transverse magnetic (TM) modes, it offers the same absorption spectrum, in which the two resonance peaks with high absorptions are observed. Simulation data have also shown that the absorption spectrum will remain almost constant with a deviation of the radiation angle from 0 to 20 °. The capability of the device as a sensor of the refractive index of analyte solutions has also been measured. Thus by pouring analytes into the apertures of the structure and increasing their refractive index, the displacement of both resonance peaks to higher wavelengths has been observed. The sensitivities of these two resonance peaks (Δλ / Δn) are obtained 103.82 nm /RIU and 189.58 nm/RIU, respectively.}, Keywords = {Plasmonic Perfect Absorber, Insensitive to incident angle, Insensitive to polarization, Metal-Insulator-Metal Nanostructure.}, volume = {28}, Number = {2}, pages = {413-416}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2780-en.html}, eprint = {http://opsi.ir/article-1-2780-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {zarei, Milad and soofi, hadi}, title = {Electro-Optic Directional Coupler Switches With Hybrid Plasmonic Waveguides Based On Barium Titanate}, abstract ={ Electro-optic directional coupler Switch with hybrid plasmonic waveguides based on barium titanate is designed and simulated. we believe with use of barium titanate instead of lithium niobate and hybrid plasmonic instead of plasmonic structure achieving smaller complete switch voltage and low transmission losses are possible. Results from electro-static and optical simulations from COMSOL and LUMERICAL FDTD shows that loss is 0.084dB/μm and coupling length is 7.1μm with coupling factor of 75%.}, Keywords = {Pockels Effect, Barium Titanate, Directional coupler Swithches, Hybrid Plasmonic waveguide}, volume = {28}, Number = {2}, pages = {417-420}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2744-en.html}, eprint = {http://opsi.ir/article-1-2744-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Forouzeshfard, Mohammadreza and Malekhosseini, Seyyed Mohammadbagher and Bazmandeganmaghoie, ami}, title = {Calculating the effective permittivity and permeability of a metamaterial unit cell for applying in invisibility cloak}, abstract ={Metamaterials as a man-made artificial material have attracted many interests in recent years. This paper is devoted to design the unit cell of invisibility cloak as a significant part of metamaterial. The proper unit cell for invisibility cloak using split resonator is designed in this paper. We find the effective permittivity and permeability of the designed unit cell based on two methods with respect to required special dielectric permittivity and permeability for invisibility cloak. Finally, using the result extracting from the two methods which are in good agreement, we prove that the design unit cell can be applied as an invisibility cloak unit cell at the operating frequency of 11 GHz.}, Keywords = {Metamaterial Unit Cell, Invisibility Cloak, Effective Permittivity and Permeability, Split Ring Resonator}, volume = {28}, Number = {2}, pages = {421-424}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2596-en.html}, eprint = {http://opsi.ir/article-1-2596-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Farokhi, Zahra and pakarzadeh, Hassan and askari, Mahdi}, title = {Sensitivity enhancement in refractive index based metamaterial sensors in infrared region}, abstract ={In this paper, by changing the geometry and design of the unit cell of the sensor structure without changing the values ​​of the parameters, the sensitivity of the metamaterial sensor based on the refractive index introduced in the infrared region is increased. Metamaterial-based infrared sensors have attracted a lot of attention due to their ease of fabrication and various applications. By studying the performance of metamaterial sensors, it is shown that the sensitivity of sensors can be greatly increased using metamaterials. In the sensor design, a metamaterial structure with unit cells consisting of two layers of silver is used so that the first layer consists of two metal nano-rods and two nano-plates while the second layer includes a uniform silver plate such that the structure acts as a perfect resonant absorber. Moreover, its resonance frequency strongly depends on the refractive index of the environment, and the results show that by changing the geometry of the structure, a higher sensitivity can be achieved. The initial sensitivity of the sensor structure was 2720 nm / RIU while by changing the geometry and eliminating some layers, the final sensitivity can be increased to 4077.2 nm/RIU. }, Keywords = {Sensor, Metamaterials, Sensitivity, Infrared}, volume = {28}, Number = {2}, pages = {425-428}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2759-en.html}, eprint = {http://opsi.ir/article-1-2759-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Alizadeh, Abdollah and AlaieQaravanlu, Rez}, title = {Design and simulation of glucose sensor based on SPR in optical fiber}, abstract ={In this paper, a fiber optic based glucose sensor is designed and simulated. The structure of the biosensor consists of a single-mode optical fiber, with D shaped cross section, and coated by metal. When gold or silver used as metal layer, Plasmon resonant frequencies will be in the visible spectrum. Proteins and other biomolecules usually are measured in the IR region. To move plasmon resonant frequency to IR region, Indium Tin Oxside (ITO) is used such as metal layer. By introducing two graphene layer on the both side of ITO, performance of the sensor has been improved. The results of FEM simulation shows the sensitivity is 6500 nm / RIU.}, Keywords = {Biosensors, local surface plasmons, losses, sensitivity, graphene, glucose.}, volume = {28}, Number = {2}, pages = {429-432}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2781-en.html}, eprint = {http://opsi.ir/article-1-2781-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {KavoshTehrani, Masoud and Abdalhade, Assef and kiani, Ali}, title = {Measurement of refractive index and thickness of MgF2 thin film on BK7 substrate by null ellipsometry}, abstract ={In this paper, the refractive index and thickness of MgF2 thin film on BK7 substrate have been measured using the null ellipsometry. In this arrangement, helium neon laser light irradiation at angles of 45, 50 and 55 degrees to the sample. The refractive index and thickness of the MgF2 layer is determined by the program written in MATLAB software. The results show a good agreement with the real results.}, Keywords = {null ellipsometry, refractive index, thin film}, volume = {28}, Number = {2}, pages = {434-437}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2755-en.html}, eprint = {http://opsi.ir/article-1-2755-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {AivazyArvanagh, Pegah and Fatemeh, Fatemeh and Parsanasab, Gholam-mohammad and TalebiKhoshmehr, mohamm}, title = {Investigation of outside unwanted particles diffraction on microring lasers}, abstract ={Here, the experimental performance of optically-pumped polymer micro-ring laser fabricated by the direct writing method of SU-8 is reported. Then the effect size of outside unwanted particles (OUP) is investigated on the sample. It has been shown when the size of OUPs are very small, the amplitude of intensity increase by 67%, and for the OUPs with bigger size, this value decrease by 55% in comparison with no OUP sample. The quality factor of samples without OUP, small, and big OUP respectively has been equal to 1212.68, 2413.32, and 1204.47.}, Keywords = {Laser, Micro-ring, Spectroscopy, Outside unwanted particles}, volume = {28}, Number = {2}, pages = {438-441}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2643-en.html}, eprint = {http://opsi.ir/article-1-2643-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {KhademSadigh, Mahs}, title = {Investigation of electrooptical behavior of doped nematic liquid crystals with chiral dopant}, abstract ={In recent years, liquid crystals have attracted much attention due to their various applications and unique structural properties in electro-optical and photonic devices. In this experimental work, chiral dopants were used to increase the electro-optical properties of pure nematic liquid crystal. The results show that third order nonlinear susceptibility and kerr constant of doped liquid crystals with different weight percent of chiral dopant are higher than pure liquid crystal. Therefore, the studies on the simple, inexpensive, and effective methods can be considered as an effective step to expend the optoelectronic applications of liquid crystals.}, Keywords = {Chiral dopant, Electro-optic, Kerr Constant, Liquid Crystal, Third order nonlinear susceptibility}, volume = {28}, Number = {2}, pages = {442-445}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2712-en.html}, eprint = {http://opsi.ir/article-1-2712-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {abbasi, Fatemeh and Ghorashi, Seyed Mohammad Bagher}, title = {Investigating the effect of Ag nanorods on the emission wavelength of OLED}, abstract ={Noble metals, especially Ag and Au nanostructures, have unique and adjustable optical attributes in terms of surface plasmon resonance. In this research, the effect of Ag nanorods on the light extraction efficiency and the FWHM of OLED structures was investigated using the finite difference time domain (FDTD) method. The simulation results displayed that by changing the size of Ag nanostructures, the emission wavelength can be adjusted, and the FWHM can be reduced. The presence of Ag nanorods caused a significant reduction in the FWHM and a shift to the longer wavelengths in the structures. The simulation results showed that using Ag nanorods in the middle of the electron transfer layer (Alq3), the FWHM decreased from 150nm to 29 nm and the emission peak shifted from 530 nm to 844 nm.}, Keywords = {OLED, FDTD method, near infrared, nanorod}, volume = {28}, Number = {2}, pages = {446-449}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2775-en.html}, eprint = {http://opsi.ir/article-1-2775-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Goodarzi, Reza and Hajesmailbaigi, Fereshteh and Bostandoost, Eftekhar and Motamedi, Asma and Razzaghi, Hossei}, title = {Investigation of the geometry of spontaneous structures after interaction with ultra-short laser pulses}, abstract ={In this research, the geometry of spontaneous structures formed on the surface of the silicon wafer after interaction with femtosecond laser pulses has been investigated. At the energy flux near the ablation threshold, the structure formed is in accordance with the Gaussian profile of the laser and is circular; As the energy and number of pulses increase, spontaneous structures form on the surface that does not initially have a regular shape. As the energy increases and the number of pulses increases, the spontaneous structures gradually take on triangular and quadrilateral geometric shapes. Finally, it is shown that by increasing the energy transferred to the surface (either through the number of pulses or by increasing the energy flux of the beams), the geometry of the structures changes from a circular initial form to a regular hexagon that has high stability.}, Keywords = {Spontaneous structure, Silicon, Femtosecond, Laser, Geometry}, volume = {28}, Number = {2}, pages = {450-453}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2578-en.html}, eprint = {http://opsi.ir/article-1-2578-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {mirmohammadi, mohsen and parsanasab, gholam mohammad and talebikhoshmehr, mohamm}, title = {Coupling and Loss measurement of SU8 Waveguides}, abstract ={Abstract- In this paper we described the importance, propagation method and some specification of optical waveguides. In the following, profits  and important feature of polymeric waveguides were explained. Then, fabrication process of  kind of polymeric waveguide with SU8 which is  a negative photoresist and necessary set-up for lithography were completely described. Finally, we describe how to couple light through optical fiber to fabricated waveguide and measuring the loss of waveguide in different wavelength and Loss value which get are 0.12, 0.9 and 0.11 dB/cm for 655 nm(visible) and 980 nm,1550 nm IR wavelength in respectively.}, Keywords = {Couple, Loss, Photoresist, Polymer Waveguide.}, volume = {28}, Number = {2}, pages = {454-457}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2542-en.html}, eprint = {http://opsi.ir/article-1-2542-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Sohrabi, Sahar and pazokian, Hadiyeh and Ghafary, Bijan and Mollabashi, Mahmood and Montazeralghaem, Mohse}, title = {Superhydrophobic polycarbonate fabrication using excimer laser}, abstract ={In this paper effect of the excimer laser irradiation on the oil and water contact angle of PC was investigated. Surface morphology and chemistry modifications are two important factors effect on the surface wettability. Scanning Electron Microscopy was used for investigation the morphology of the irradiated samples. The results of the experiments show that the laser irradiation strongly effects on the wettability. At the fluences above the ablation threshold, microstructures are fabricated and at the fluences above 80  mJ/Cm2, samples show superhydrophobicity and superoleophilicity properties.}, Keywords = {Contact angle, Excimer laser, Polycarbonate, Superhydrophobicity, Superoleophilicity}, volume = {28}, Number = {2}, pages = {458-461}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2754-en.html}, eprint = {http://opsi.ir/article-1-2754-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {taghiyan, shima and fallah, kimya and keshtmand, raziye and saberimoghaddam, reza and NorouzianAlam, Shahab}, title = {Investigation of factors affecting perovskite photoluminescence MAPbI3 in the manufacturing process}, abstract ={ In recent years, perovskite nanomaterials as solar cells and light emitting diodes have received much attention and research. Research has shown that several factors play a role in regulating the band gap energy and the optical properties of perovskites. Thickness and heat treatment are factors that can have a significant impact on optical properties in the manufacturing process. In this study, perovskite films of methyl ammonium lead iodide (MAPbI3) was prepared by two-stage rotation method and the thickness of perovskite films and heat treatment temperature were investigated as the reported variable. The results of photoluminescence and XRD were compared and the optimal sample in terms of thickness and annealing temperature of the sample with a thickness of 370 nm and annealing temperature of 100 ° C was introduced.}, Keywords = {MAPbI3, methyl ammonium lead iodide, perovskite, thermal annealing, thickness}, volume = {28}, Number = {2}, pages = {462-465}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2539-en.html}, eprint = {http://opsi.ir/article-1-2539-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Ejehi, Faezeh and Shoshtari, Leyla and Mohammadpour, Raheleh and Asadian, Elham and Sasanpour, Pezhm}, title = {Fabrication of a Self-Powered UV-Photodetector based on Graphene Oxide via Triboelectric Nanogenerators}, abstract ={UV-photodetectors are widely applied not only for measurement of UV irradiation of sunlight, but also for air pollution, astronomical, and engine combustion studies. Unsustainable power sources may restrict the utilization of photodetectors, which can be solved by triboelectric nanogenerators, converting mechanical agitation to electricity. In this research, we have applied graphene oxide as the light-sensitive material and the conventional electricity source was replaced by a triboelectric nanogenerator. The obtained results show that the photoresponsivity, as well as quantum efficiency, can be augmented by 75 times, which open new avenues for self-powered photodetectors.}, Keywords = {Graphene Oxide, Photodetector, Self-powered, Triboelectric Nanogenerator, Ultraviolet}, volume = {28}, Number = {2}, pages = {467-470}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2629-en.html}, eprint = {http://opsi.ir/article-1-2629-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Tooshi, Aylar and Abdi-Ghaleh, Reza and Roumi, Bita and Madani, Amir and Zadjamal-Sayfi, robab}, title = {Investigation of circularly polarized light absorption in a structure containing the graphene}, abstract ={In this paper, according to the different optical responses of the graphene under an external magnetic field for a left- and right-handed circular lights, a circular sensitive absorber structure in the terahertz frequency region has been proposed. An analytical method has been used for calculating the absorption of the structure. Investigations of the circular polarizations’ absorption spectra for the different magnetic field strengths show that the proposed structure absorbs the left-handed circularly polarized light at a particular frequency, and significantly reflects the right-handed one at the same frequency.}, Keywords = {Absorption, Circular polarization, Graphene, Magnetic field}, volume = {28}, Number = {2}, pages = {475-478}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2726-en.html}, eprint = {http://opsi.ir/article-1-2726-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Dezhaloud, Tahereh and Abdi-Ghaleh, Reza and PoursamadBonab, jafar}, title = {Faraday rotation of the Graphene/SiO2/Ta2O5 structure under applying an external magnetic field and a laser pump light}, abstract ={In this paper, the Faraday effect in a Graphene/SiO2/Ta2O5 layered structure under applying an external magnetic field, and a pump light of a Helium-Neon laser with a wavelength of 632.8 nm is investigated in the THz frequency region. Our results show that, as the magnetic field strength increases, the maximum Faraday rotation frequency shifts to the higher frequencies, and at the same time, the value of the maximum Faraday rotation angle increases. Also, as the power of pump light increases, the value of the Faraday rotation angle remains unchanged, but the maximum Faraday rotation frequency shifts to the lower frequencies. The noticeable changes in the transmission spectrum were not observed by changing the magnetic field strength and the pump light power.}, Keywords = {Faraday rotation, Graphene, Magnetic field, Laser pump light.}, volume = {28}, Number = {2}, pages = {479-482}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2784-en.html}, eprint = {http://opsi.ir/article-1-2784-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Goodarzi, Rez}, title = {Thermal effects of milliseconds laser pulse on carbon-epoxy composite}, abstract ={In this paper, the thermal effects of laser pulsed energy absorption after interaction with an epoxy-carbon composite are investigated. The absorption of laser energy increases the temperature by the Gaussian distribution and shocks the composite due to the applying the laser pulse in a short period of time; The stress effects of the composite are obtained after laser pulse irradiation and its distribution on the sample surface indicates that significant pressure is applied to the sample, which is radially expanded. In the deep direction, by calculating the maximum stress, it is shown that with decreasing laser energy absorption, the effects of straw stress are reduced.}, Keywords = {Epoxy, Thermal effects, Composite, Carbon, Milliseconds laser}, volume = {28}, Number = {2}, pages = {484-487}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2602-en.html}, eprint = {http://opsi.ir/article-1-2602-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {MashayekhiAsl, Ali and yeganeh, mohammad and Salimian, Saeed and Noferesti, Amirabbas}, title = {Introduction to a New Method to Determination of Laser Induced Damage Threshold}, abstract ={ The laser induced damage threshold is a very important parameter in determining the resistance of an optical element to laser radiation. The usual methods used according to the ISO 21254 (1-4) standard to determine the moment of failure of the element, are indirect methods, which sometimes have complexities that are costly to use. In addition, these methods need to be validated by other methods, including microscopic representation of the formed damage. This paper introduces a new method for identifying the laser damage threshold of various optical filters, in addition to the methods in the ISO international standard. This method is based on the use of far-field diffraction patterns of probe laser from the area subject to destruction and image processing of it. The most important advantage of this method is simplicity, cheapness and no need for a spatial filter for laser. In this paper, we show that very small damage at the beginning of formation with a size of about 75 microns can be detected.}, Keywords = {image processing, laser induced damage threshold, laser instruments, LIDT, quality control.}, volume = {28}, Number = {2}, pages = {488-491}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2594-en.html}, eprint = {http://opsi.ir/article-1-2594-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Khanjani, Mohmammad and Hosseini, Sima and JafariSiavashani, Morteza and Borzouei, Hadi and AhadiAkhlaghi, Ehs}, title = {Investigation of phase-shift algorithms affected by error sources}, abstract ={In this paper, the responses of phase shift index algorithms have been studied under the influence of three types of error sources. For this purpose, the interference was simulated under different conditions on MATLAB software. Environmental Vibration errors, intensity fluctuations and inaccuracies of phase shift steps with different values were applied to the simulated interference intensity. Then the phase distribution is obtained using four least-squares, Hariharan, N-buckets and averaging algorithms and compared with the assumed distribution. Obtained results is studied in terms of speed, precision and accuracy of algorithms.  Based on the results, the least-square and averaging have the best accuracy and precision.}, Keywords = {interferometry, phase-shift, error sources, accuracy, precision.}, volume = {28}, Number = {2}, pages = {492-495}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2538-en.html}, eprint = {http://opsi.ir/article-1-2538-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {akou, Hassan and Mofidinasab, Elham}, title = {Investigation of the effect of TEM(1,0)+TEM(0,1) mode on the quality of electron beam in its vacuum laser acceleration}, abstract ={In this paper, the generation of high energy electron beam with low divergence by a short Hermite-Gaussian laser pulse in the mode TEM(1,0)+TEM(0,1) is investigated. The simulation results show that the laser pulse in such a mode by applying transverse ponderomotive force can push the electrons towards the axis and compact the electron beam in the transverse plane. In this case, the accelerated electron bunch not only achieves high energy but also has much less transverse divergence compared to other modes.}, Keywords = {Laser Electron Acceleration, Hermite-Gaussian laser beam, Transverse Ponderomotive Force}, volume = {28}, Number = {2}, pages = {496-499}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2760-en.html}, eprint = {http://opsi.ir/article-1-2760-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {mohammad.hendijanifard, mohamm}, title = {Process Photoluminescence Microscope Built to Recognize Dead LEDs}, abstract ={  A photoluminescence microscope is built using continuous wave 405 nm excitation lasers. The photoluminescence objects for this work are green light emitting diodes (LEDs). The emission of these LEDs occurs at 525 nm. If the LEDs are not shorted, they photoluminesce at 525 nm. Therefore, the dead LEDs look dark under photoluminescence microscope. Photoluminescence microscope can identify dead LEDs before even connecting them to the electric source. The use of such a microscope is within the process of manufacturing LEDs.  }, Keywords = {Building Photoluminescence Microscope, Light Emitting Diodes}, volume = {28}, Number = {2}, pages = {500-503}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2779-en.html}, eprint = {http://opsi.ir/article-1-2779-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {roostaei, Neda and hamidi, Seyed Mehri and mosleh, mohammad and Shnan, Nizar}, title = {Investigation of spatial intensity distribution by using an optical diffuser in the Micro colorimetry microscope}, abstract ={Optical diffusers are optical elements that smooth the spatial distribution of light through irregular light scattering. Recently, the fabrication and engineering of optical diffusers has attracted many attentions. In this research, an optical diffuser was fabricated using silicon carbide ceramic powder and by placing the diffuser in the optical path of the experimental setup of optical transmission microscope, the spatial intensity distribution has been investigated. The spatial intensity distribution was uniform and symmetrical, and the intensity distribution diagrams are achieved corresponding to the Gaussian distribution. Finally, a two-dimensional sample based on polymeric substrate was fabricated and used for colorimetry and imaging in this experimental setup.}, Keywords = {Optical microscope, intensity distribution, optical diffuser, optical imaging.}, volume = {28}, Number = {2}, pages = {504-507}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2703-en.html}, eprint = {http://opsi.ir/article-1-2703-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Ghahramani, Soghra and Barvestani, Jamal and Meshginqalam, Bahar}, title = {Theoretical study of an Opening-up photonic crystal fiber sensor based on surface plasmon resonance employing gold nanowire}, abstract ={  An opening-up photonic crystal fiber sensor based on surface plasmone resonance employing gold nanowire is designed and studied by the finite-difference time-domain method. To get the better sensing performance we introduce gold nanowire in this structure. Appling the gold nanowire can eliminate the problems of metal film coating in inner or outer surface of photonic crystal fiber. The performance of offered sensor has been described by wavelength and amplitude sensitivities. This sensor includes the maximum obtained wavelength and amplitude sensitivities of 3090  and 314.4  . It is expected that, the proposed sensor has capability of multi-analyte sensing in biological and medical applications.  }, Keywords = {surface plasmon resonance, photonic crystal fiber, nanowire, sensitivity, optical sensor}, volume = {28}, Number = {2}, pages = {509-512}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2556-en.html}, eprint = {http://opsi.ir/article-1-2556-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Shiri, Ramin and Shahrokhabadi, Hossein and FathollahiKhalkhali, Taimaz and Bananej, Alirez}, title = {Design and Simulating An Optical Filter Based On Binary and Ternary One-Dimensional Photonic Crystals}, abstract ={In this paper, an optical filter based on one-dimensional binary and ternary photonic crystals with a central defect layer and planar/triangular unit cells have been designed and simulated. The wavelength 800 nm as central output of Ti:Sapphire laser has been selected as the target wavelength to investigate its transmission through the medium at normal incidence. Simulation results revealed that using ternary structure with triangular unit cells increases the filter transmission considerably for the defect mode while reducing the band-gap width to some extent. Also, the transmission spectrum of the proposed filter shows a small shift toward the longer wavelengths.}, Keywords = {Photonic Crystal, Transmission Spectrum, Optical Filter, Band Gap, Defect Mode}, volume = {28}, Number = {2}, pages = {513-513}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2634-en.html}, eprint = {http://opsi.ir/article-1-2634-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {vahedi, Ali and vahedi, Firouz}, title = {Evaluation of some affecting factors on liquid crystal / photonic crystal adjustable filters}, abstract ={In this research, multi-channel adjustable filters based on one-dimensional photonic crystals contain of anisotropic liquid crystal have been reviewed and studied. Firstly, by entering parameters such as liquid crystal refractive index, thickness of triple photonic crystal layers, metal and defect layer thickness, and also by selecting the appropriate frequency area, the transmittance matrix of system is calculated, then after transmittance is simulated as a function of frequency. The results show that for frequencies below 2000 THz and N= 3 layers, structure has the maximum modes and N = 6 has the lowest transmittance. By increasing the thickness of the liquid crystal to 2 micrometers, the number of modes has increased from 4 filtering modes to 7 modes, also peak of modes increase intensely in the middle frequency.}, Keywords = {Biosensors, Bragg reflector, Graphene, Photonic Crystals, Tamm states}, volume = {28}, Number = {2}, pages = {517-520}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2595-en.html}, eprint = {http://opsi.ir/article-1-2595-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Rashidi, shiva and RoshanEntezar, Samad and rashidi, arezoo}, title = {Influence of Changing the Thickness of Ge2Sb2Te5 Nanolayer on Absorption Behavior in One-Dimensional Asymmetric Photonic Multilayers}, abstract ={In this paper, the absorption properties in an asymmetric structure are investigated by varying the thickness of Ge2Sb2Te5 (GST) nanolayer. The results show that there is the possibility of obtaining absorption enhancement in either amorphous or crystalline phases of GST by an appropriate choice of its thickness.}, Keywords = {Absorption enhancement, Amorphous phase, Crystalline phase, GST nanolayer}, volume = {28}, Number = {2}, pages = {521-524}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2710-en.html}, eprint = {http://opsi.ir/article-1-2710-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Shirin, Simin and madani, Amir and roshanentezar, sam}, title = {Properties of defect modes in a photonic crystal with a defect structurally chiral layer}, abstract ={In this paper, the properties of photonic defect modes in a one-dimensional photonic crystal made of alternate layers of isotropic dielectric medium with a central defect layer consisting of a structurally chiral medium have been investigated using the transfer matrix method. The structurally chiral material is taken to possess locally a point group symmetry. The results show that the suggested structure possesses a photonic bandgap in the optical region. Also, four defect modes are created in the photonic bandgap due to the breaking of the periodicity of the photonic crystal lattice. It is shown that the tilt angle can change the number and position of these defect modes in transmission spectra of the structure.}, Keywords = {photonic crystal, tilt angle, structurally chiral medium, defect modes.}, volume = {28}, Number = {2}, pages = {525-528}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2560-en.html}, eprint = {http://opsi.ir/article-1-2560-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Ansari, Narges and Sohrabi, Atieh and mirbaghestan, kimiy}, title = {Wavelength adjustability of Defect modes by Altering the Thickness of Defect layers in Defective Photonic Crystal Based on MoS2 Monolayer}, abstract ={Today, two-dimensional materials such as MoS2 have exhibited distinctive capabilities in optoelectronics, due to the high absorption and nanometric thickness. However, this amount needs to be increased. One of the most common methods to increase absorption is to insert a monolayer of MoS2 as a defect in photonic crystals. In this paper a defective photonic crystal with three defects which are designed as DMD because of its impact on localization of wave is used. D and M are assumed to be SiO2 and MoS2 layers respectively. Influences of altering the thickness of defect layer D on absorption and wavelength of defect modes are investigated. It can be seen that altering the thickness of defect layer D can result in wavelength adjustability and improve distinguishably of defect modes.}, Keywords = {Defective photonic crystal, Molybdenum disulfate, Thickness of Defect layer, Wavelength adjustability}, volume = {28}, Number = {2}, pages = {529-532}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2673-en.html}, eprint = {http://opsi.ir/article-1-2673-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Khazaie, Mahtab and RoshanEntezar, Samad and razi, sepehr}, title = {Biosensor Based on Anisotropic Photonic Crystal Including Semiconductor Layers and Birefringence Slabs with graded thickness variations}, abstract ={Abstract- Biosensor based on one dimensional photonic crystal (PC) and including anisotropic birefringence layers of KTP and semiconductor slabs of PbS and TiO­2 is suggested in this paper. In order to increase the detection accuracy and quality as well as realization of a superior substrate for better excitation of Bloch surface waves, layers of graphene are considered between the sensor core (PC) and the studied biological material. Also the structure of the crystal is selected in a way that the thicknesses of the involved layers are increased in a specific manner as they approach the bio-sample. Results clearly indicate that optical response of the suggested structure are totally in relation with the structural characteristics of the PC so that by changing the thickness of the layers, not only the central wavelength of the resonant mode is changed but also its intensity and width are affected as well. Furthermore, the number of the periods of the layers has also a very important effect on the reflectance spectrum of the suggested sensor and by increasing its value the resonant mode is generated at lower wavelengths and its width is reduced.   }, Keywords = {Photonic crystal, Tunable responsivity, Birefringence slab, Graded thickness changes, Biosensor.}, volume = {28}, Number = {2}, pages = {533-536}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2644-en.html}, eprint = {http://opsi.ir/article-1-2644-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {ansari, nages and sohrabi, Atieh and Mirbaghestan, Kimi}, title = {Wavelength adjustability Of Defect Modes In Defective Photonic Crystal Based On MoS2 Monolayer}, abstract ={Nowadays, two-dimensional materials such as MoS2 have demonstrated distinctive capabilities in optoelectronic applications. In this paper, to achieve high absorption and wavelength adjustability, a defective photonic crystal with three defects is used. the defects are designed as DMD which D and M assumed to be SiO2 and MoS2 layers respectively. Also, defect positions are investigated to find their impact on the absorption, wavelength of defect modes and peak to peak distance. Optimal structure has two defect modes with more than 97% absorption in photonic band gap. The wavelength of defect modes can be tuned by changing the distance between the first and the second defects. Therefor this characteristic is very efficient in designing optoelectronic devices.}, Keywords = {: Absorption, defect mode, Defective photonic crystal, Mobilidiumdisulfate, Wavelength adjustability}, volume = {28}, Number = {2}, pages = {537-540}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2721-en.html}, eprint = {http://opsi.ir/article-1-2721-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Mohammadpour, Ali and Barvestani, Jamal and SoltaniVala, Ali}, title = {Investigation of the Effect of Defect Thickness on Anomalous Properties of a Parity-Time Reversal Symmetry System}, abstract ={Understanding the concepts related to parity-time symmetry (PT) is possible in artificial optical environments including gain and loss regions. In this paper, the effect of defect thickness in a multilayer system with PT symmetry is investigated. The proposed system consists of two one-dimensional PT photonic crystals with respect to the origin, which by changing the thickness of the central layers as a defect, the behavior of the system has been studied. Using the transfer matrix method (TMM) and investigating the reflection and transmission spectra and measuring the π-phase hopping in the reflection spectrum for different frequency regions and observing the unimodular eigenvalues of the scattering matrix at exceptional points (EPs), significant features such as unidirectional reflectionless will be available. As the thickness of defect layers increases, the EPs disappear and the reflection phase hopping exceeds the previous value.}, Keywords = {Parity-time symmetry, Reflectionless, Metamaterials, Scattering matrix, Exceptional points.}, volume = {28}, Number = {2}, pages = {541-544}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2557-en.html}, eprint = {http://opsi.ir/article-1-2557-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Fathollahikhalkhali, Taymaz and Zareiyan, Zahr}, title = {Two Dimensional Photonic Crystal Coupler Composed of Graded Index Photonic Crystal Lens and waveguide}, abstract ={In this paper the coupler efficiency of a coupler is investigated which it composed of GRIN PC linear lens and triangular PCW. The PCW is applied in ZrO2 rods in air by square cross section in two designed form namely regular and funnel form. The results of simulations and calculations showed that the highest coupling efficiency belongs to composition of funnel waveguide and linear lens in amount of 4.61 dB.}, Keywords = {2D photonic crystal, Finite-Difference Time-domain Method, Photonic Crystal Couplers, Plane Wave Method}, volume = {28}, Number = {2}, pages = {542-545}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2587-en.html}, eprint = {http://opsi.ir/article-1-2587-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {MohajerMazandarani, Salman and Mehrpouri, Maji}, title = {Investigation of optical properties of folvic acid}, abstract ={Abstract: Folic acid is a species of natural organic acid polymers extracted from soil humus, which is composed of amino acids, phenolic rings, sugars and vitamins, and has high antioxidant and antibacterial properties. In this paper, after validation of the existing folic acid by FTIR test, four concentrations of it were made with water solvent and by linear absorption and scanning optical arrangements, the values of linear absorption coefficient were measured and the nonlinear refractive index was obtained from the order of 10^(-9)   〖cm〗^2⁄(w ). It was found that with increasing concentration, the coefficients of linear absorption and nonlinear refraction increase.}, Keywords = {Fulvic Acid, Linear absorption, Nonlinear refractine index, Z-Scan}, volume = {28}, Number = {2}, pages = {550-553}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2723-en.html}, eprint = {http://opsi.ir/article-1-2723-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Eslami-Kalantari, Mohammad and saber, Fatemeh and Haddad, Mohammad Ali and Salari, Hadi and Dehghan, Alirez}, title = {The effect of laser to reduce the contamination of radioactive medical waste}, abstract ={The method of measuring hormone and molecular components concentrations is important in today's diagnosis and treatment. The method of labeled assays, which has been reduced due to the generation of radioactive waste, is one of the methods used to measure the concentration of materials. Due to the widespread use of lasers for surface decontamination, this study investigated the effect of lasers on reducing and eliminating radioactive contamination in test tubes containing labeled assays for the first time. The pulsed Nd:YAG laser was used to irradiate the area, resulting in a 25% reduction in pollution.}, Keywords = {Contamination, Laser, Radioimmunoassay, Radioactive}, volume = {28}, Number = {2}, pages = {554-557}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2606-en.html}, eprint = {http://opsi.ir/article-1-2606-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {nasrabadi, batul and Zibaii, Mohammad Ismail and Hosseini, Seyedeh Mahsh}, title = {study and modeling of the temperature effect caused by light radiation on brain tissue and response of neurons in optogenetic control}, abstract ={Optogenetics is an advanced optical tool in neuroscience research. However, light stimulation in optogenetic experiments may also affect neural function not only by directly stimulating light-sensitive channels, but also by generating heat. In this paper, the effect of increasing temperature of the brain tissue was studied with light stimulation. To investigate the effect of temperature on spike neuron, Hodgkin-Huxley model and the hippocampal pyramidal cell model have been used. The modeling results show that irradiation of brain tissue by pulsed laser with a frequency of 40 Hz, duty cycle of 90% and wavelength of 593 nm at a distance of 10 μm from the fiber, for 60 seconds with a power of 1 and 40 mW leads to temperature change to 39 ° C. The results show intensity of the laser decreases to zero at a distance of 1 mm from tip of fiber, which is absorbed by the tissue and causes a temperature rise of 2 ° C that can increase the spike rate of neurons by 16.6%.}, Keywords = {Hodgkin and Huxley model, Optogenetic, Photocycle model, Spike, Temperature.}, volume = {28}, Number = {2}, pages = {558-561}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2610-en.html}, eprint = {http://opsi.ir/article-1-2610-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Ansari, Mohammad Ali and Meysami, Anis}, title = {Diffuse optical imaging of breast deep tumor}, abstract ={Diffuse Optical Tomography (DOT) is a non-invasive imaging technique for determination of optical parameters of tissue from boundary measurement to characterize functional behavior and structural properties of tissue. The DOT algorithm essentially consists of two parts: one is a forward model to calculate the light propagation and the resultant outward re-emissions at the boundary of the tissue, based on the diffuse equation. The other is an inverse model searching for the distribution of optical properties. Imaging through highly diffuse medium is a challenge and stability is always an issue due to inverse problem. In this paper, for three-dimensional (3-D) imaging, we used a stack of 2-D binary segmented images of breast tumor as an input of the mesh generator, iso2mesh and then, simulated an imaging system including 25 sources and detectors up and down of tissue. For solving continuous wave (CW) forward of diffuse equation, we used Toast++ open-source software based on a finite-element solver. Then, a non-linear gradient-based optimization with total variation (TV) Regularization was used to reconstruct resulting image, solving inverse problem of DOT and enforcing different smoothness conditions in the solution. Finally, image quality indexes for quality assessment in two depths of tissue were reported.}, Keywords = {Diffuse Optical Tomography, Forward model, Inverse problem, Image reconstruction, Optical imaging}, volume = {28}, Number = {2}, pages = {566-569}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2679-en.html}, eprint = {http://opsi.ir/article-1-2679-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Khomarlou, Parham and MohajerMazandarani, Salm}, title = {Optical tracking of tumor location in healthy tissue by the simulation}, abstract ={In this study, our goal was to identify the location of tumor cells in a healthy tissue, using simulation in COMSOL software. First, the geometry of our environment have been designed and the materials and their attributes have been determined, and mesh has been done then boundary conditions have been chosen. The Electric field norm(normE) on the cut line at 2 wavelengths for both the presence and absence of tumor cells and also its relationship with the optical properties of tumor cells have been shown. In the following, the effect of changes in the number of tumors at a specific location and wavelength on Electric field norm(normE) have been reported. The results of the simulation diagrams indicate that the presence of tumor cells among healthy cells can be detected.}, Keywords = {Optical properties, Tumor cells, Simulation, COMSOL, Electric field norm}, volume = {28}, Number = {2}, pages = {570-573}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2645-en.html}, eprint = {http://opsi.ir/article-1-2645-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {DayemOmid, Zahra and Ahmadi-Kandajani, Sohrsb and Naziri, Pouriya and Olyaeefar, Babak}, title = {The fabrication of zinc oxide inverse opal photonic crystals by using PMMA microspheres}, abstract ={In this paper, the fabrication of the zinc oxide inverse opal photonic crystals is investigated. To this end, the polymer microspheres with a diameter of approximately 355 nm were synthesized. To fabricate inverse opal, first the opal structure of these microspheres was prepared and then by injecting zinc oxide precursor and the calcination of polymer, the inverse opal was obtained. The structure of inverse opal was confirmed by scanning electron microscope (SEM) image and the average diameter of hollow spheres in the porous structure was measured at 327 nm. In addition, using the transmission spectrum, the photonic band gap was observed at 359 nm wavelength range. These inverse opals can be used as a biosensor to analysis enzymes, proteins, and so on.}, Keywords = {inverse opal, polymer microspheres, opal, zinc oxide, biosensor}, volume = {28}, Number = {2}, pages = {574-577}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2652-en.html}, eprint = {http://opsi.ir/article-1-2652-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {ghasemi, pouria and zibaii, mohammad ismail and Hosseini, Seyedeh Mahshad and SalehiMoghadam, Mohammad Rez}, title = {Design and fabrication of electrophysiology recording system based on optoelectrode array for in vitro optogenetics applications.}, abstract ={  In the optogenetic technique, which studies the neural system with light, it is necessary to examine cell function at the same time or after light stimulation using electrophysiological recording methods. In this paper, an integrated array optrode system for optical stimulation and electrophysiology recording is designed and fabricated for optogenetic applications. In this system using micromachining and pholithogeraphy a 4 × 4 microelectrode array was fabricated with circular diameter 300 μm from and impedance 104 KΩ at 1 kHz. In this design, LEDs with dimensions of 1 × 0.5 × 0.35 mm, wavelength of 473 nm and a maximum radiant power of 60 mW have been used for irradiation. The performance of the designed system has also been evaluated by measuring the pc12 nerve signal and cardiac stem cells.    }, Keywords = {Microelectrode array, LED array, optogenetics, electrophysiology, optrode}, volume = {28}, Number = {2}, pages = {578-581}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2646-en.html}, eprint = {http://opsi.ir/article-1-2646-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {AMERI, ZOHA and jahangiri, Fazel}, title = {Control of linearly polarized Terahertz reflection from a multilayer biological tissue}, abstract ={Wireless communication between a wearable device and a nanomachine can be considered in the frequency range of terahertz in order to monitor vital human signs. In this paper, by assuming the communication between a wearable device in air and a nanomachine in the vicinity of dermis superficial vascular plexus, total reflection from wearable device to nanomachine and vice versa is calculated for TE and TM polarization over the frequency range of 0.1-1 THz. The results show that the maximum reflection occurs for TE polarization from wearable device to nanomachine. Moreover, this reflection exceeds 40% for frequencies less than 0.2THz and for the incident degrees of 45°-90°. These results are observed for degrees larger than 67.5 for TM reflections and TE reflection from nanomachine to wearable device. It is also shown that all the multilayer reflections for both polarizations converge to 100% under normal incidence conditions.}, Keywords = {Multilayer Reflection, Terahertz, Transmission Matrix}, volume = {28}, Number = {2}, pages = {583-586}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2786-en.html}, eprint = {http://opsi.ir/article-1-2786-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {AMERI, ZOHA and JAHANGIRI, FAZEL}, title = {Comparison on the Scattering Path Loss of Terahertz waves in Human Body Tissue under Air-Enclosed and Tissue-Enclosed conditions}, abstract ={Using terahertz waves for intra-body communications between nanomachines is associated with dissipation during propagation, of which scattering is one of the most important effects. In this paper, scattering path loss with two different assumptions of air-enclosed and tissue-enclosed in subcutaneous fat is calculated and compared. The results show that for TM polarization, air-enclosed assumption gives smaller and greater scattering loss for frequencies less and bigger than 0.26 THz. The greatest difference between air-enclosed and tissue-enclosed results is observed for TE polarization at frequency of 0.4 THz.}, Keywords = {Scattering Path Loss, Intra-Body Wireless Communications, Terahertz}, volume = {28}, Number = {2}, pages = {587-590}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2785-en.html}, eprint = {http://opsi.ir/article-1-2785-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Dadfar, Fatemeh and Ansari, Narges and Mohammadimasoudi, Mohammad and Esmailpour, Mahboube}, title = {The study of identifying E.coli bacteria using a combination of liquid crystal and graphene- iron oxide nanocomposites}, abstract ={The interaction between liquid crystals and graphene-based nanocomposites is of interest for use in biosensors. In this study, E. coli was detected using a combination of liquid crystals and graphene-iron oxide nanocomposites. The nanocomposites are electrochemically prepared and have a saturation magnetization of 44.88 emu/g and its structure includes graphene nanoparticles and iron oxide (Fe2O3). The combination of nanocomposites with liquid crystal is used as a sensing system, and by placing E. coli bacteria on it, the bacterium can be detected using liquid crystal changes. This detection was recorded using a polarized light microscope (POM). The recorded patterns and images showed well that the designed sensing system could detect bacteria in a short time and with high accuracy.}, Keywords = {Biosensor, E. coli bacteria, Graphene-Iron Oxide Nanocomposite, Liquid Crystal, Sensing Systems}, volume = {28}, Number = {2}, pages = {591-594}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2544-en.html}, eprint = {http://opsi.ir/article-1-2544-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {alikhani, fatemeh and mohajerani, ezeddin and hosseinzadegan, ahme}, title = {Evaluating the depth and position of the absorber based on the diffused reflected light}, abstract ={In many skin lesions, including melanoma, having information about the depth and location of the lesion can be effective in treating it. Among diagnostic methods, light-based methods are more popular. If light enters a diffusing medium such as body tissue, while an absorbing lesion is in the path of light scattering in the tissue, based on its size, depth and color, we will see a decrease in reflected light due to absorption. This reduces the intensity, depends on the distance between the transmitter and the receiver of light. In this study, using a tissue-like phantom and an absorber as a lesion, laser and LED light was used along with the detector to evaluate the position of the absorber.The intensity calibration curves in terms of depth are obtained exponentially from the curve fitting method, and according to the obtained graph equation, For the range 0 to 20 mm, the absorber depth can be easily estimated.}, Keywords = {Deep skin lesion, Diffused reflected light, Skin lesion.}, volume = {28}, Number = {2}, pages = {595-598}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2581-en.html}, eprint = {http://opsi.ir/article-1-2581-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {torabi, shadi and bakhtiarshohani, jafar and mohamadi, Hamidreza and kafieh, rahele}, title = {Image processing in OCT images for precise calculation of capillary density around macula}, abstract ={- In this paper, density of capillaries of a real human eye in OCT images using image processing is calculated. First, capillaries are detected using morphological image processing. The shadows of the main vessels which are exists in superficial images are removed using image processing. In the next step, the precise location of macula which is located in retina is determined using morphological functions. Then, a circle with 2mm radius is considered and segmented to four areas. In the final step, density of white pixels which are capillaries around macula is calculated precisely}, Keywords = {Image processing, Morphological functions, OCT, Vessel density, MATLAB}, volume = {28}, Number = {2}, pages = {599-602}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2631-en.html}, eprint = {http://opsi.ir/article-1-2631-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {samani, mohammad and ansari, Mohmammad ali and tuchin, valery and grishavea, maria and zaytsev, sergey}, title = {Investigation of Changes in Light Reflectance and Polarization through the Animal Skin Samples using Optical Clearing Method}, abstract ={The optical clearing method is a way of increasing the depth of light penetration in the skin. In this study, an OC agent based on glycerol and DMSO is used to clear the skin. The reflectance is measured. The propagation of polarized light in rat skin ex vivo during air dehydration has been investigated using a polarization microscope.}, Keywords = {optical clearing of the skin, reflectance, the immersion method}, volume = {28}, Number = {2}, pages = {603-606}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2540-en.html}, eprint = {http://opsi.ir/article-1-2540-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Mohammadinahrani, Niloofar and bahreini, Maryam and hassanpour, Saei}, title = {Investigation of changes in physical parameters of plasma activated water using simulation of discharge in liquids}, abstract ={The simulation of discharge for spherical bubbles in water called plasma activated water (PAW) is investigated by using finite element method for a simulated 2D dielectric barrier discharge. By analyzing the changes of density, temperature, electric field, and the electric potential of the bubble regions with time, we find that PAW have electrical conductivity beside preserving its dielectric properties.}, Keywords = {plasma activated water, dielectric barrier discharge, bubble}, volume = {28}, Number = {2}, pages = {608-611}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2711-en.html}, eprint = {http://opsi.ir/article-1-2711-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {taghizadeh, lida and khorram, sirous and ahmadi, sohrab}, title = {Optical characterization of halide perovskite synthesized by glow discharge plasma}, abstract ={Abstract- Due to the unique optical and electrical properties of organic-inorganic hybrid perovskites and its applications, this material has been considered in the last decade. One of the characteristics of this material is its variable band gap, which is engineered in accordance with any synthesis method and environmental parameters. In this paper, we compare the conventional heating synthesis method with the new plasma method. Methyl ammonium lead bromide perovskite (MAPbBr3) synthesized in Glow Discharge plasma has better photoluminescence, smaller band gap and more crystalized structure than perovskite prepared by heating method.}, Keywords = {Glow discharge Plasma, hybrid perovskite, plasma}, volume = {28}, Number = {2}, pages = {612-615}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2659-en.html}, eprint = {http://opsi.ir/article-1-2659-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Farahbod, Amir Hossein and Tahsildaran, Fatemeh sadat and malekfar, rasoul}, title = {Study of incoherent pumping on stimulated emission of laser-induced copper plasma}, abstract ={In the present research, the spatio-temporal evolution of the flashlamp-pumped laser-induced copper plasma by a collisional-radiative model based on kinetic equations has been calculated to describe the mechanism of the laser oscillation. The gradient of total population density and the stimulated emission intensity at 510.5 and 578.2 nm of Cu atoms and their pumping transitions were simulated by a four-levels system. Results confirm the enhancement of stimulated emission of the active medium of the Cu plasma at forward and backward directions. This noble idea showed that the flashlamp-pumped laser-induced plasma (LIP) can be replaced with more expensive laser-pumped LIP for improvement of the LIBS method.}, Keywords = {Laser-Induced Plasma, Xe-flashlamp, Collisional-Radiative Model}, volume = {28}, Number = {2}, pages = {616-619}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2699-en.html}, eprint = {http://opsi.ir/article-1-2699-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {KhodadadAzadboni, Fatemeh}, title = {Study of Quantum Effects on the Efficiency of Electron Nanobunch and Attosecond Pulse in the Turbulence Dense Plasma}, abstract ={In this paper, the role of quantum effects on attosecond pulse generation in turbulent dense plasma is investigated.  Calculations show that in the presence of quantum effects, increasing the density gradient by a factor of 10, in the case of short-wavelengths leads to about 90%, and in the case of long-wavelengths, leads to a 66% decrease in the nanobunching gain. Increasing the quantum parameter by a factor of 10 in the short-wavelength range will result in about 80% and in the long-wavelength range will lead to a 25% reduction in the nanobunching gain saturation time generated by the Weibel instability. Increasing the quantum parameter will increase the saturation value of the density perturbation.}, Keywords = {Plasma turbulence, Quantum effects, Attosecond pulse, Dense plasma, Electron nanobunch.}, volume = {28}, Number = {2}, pages = {620-623}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2543-en.html}, eprint = {http://opsi.ir/article-1-2543-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {golshani, mojtaba and mahboudi, zahra and mahboudi, zahr}, title = {Anderson Localization in a Disordered Plasma Photonic Crystal with Sinusoidal Electron Density}, abstract ={In this paper, we investigate Anderson localization in a disordered layered structure in which the electron density of each plasma layer is sinusoidally modulated. Calculation of the normalized localization length at different frequencies, shows that the system is localized at some frequency ranges. Finally, the impact of different parameters such as disorder strength, modulation factor and incident angle on the localization length is investigated.}, Keywords = {Anderson Localization, Plasma Photonic Crystal, Sinusoidal Electron Density, Transfer Matrix}, volume = {28}, Number = {2}, pages = {624-627}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2637-en.html}, eprint = {http://opsi.ir/article-1-2637-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Mohammadpoorkermany, Mahsa and Ganjovi, Alireza and Mashayekhi, hamidreza and Falahat, amir and Rostamiravari, Mohammadnasir and Karimiankhanaman, Saee}, title = {Optical emission spectroscopy to study the properties of plasma compare with Langmuir double probe values built}, abstract ={In this paper, the physical properties of plasma discharge in a DC radiant plasma made with neon gas are investigated. In addition, optical spectroscopy has been used to measure plasma temperatures at several different voltages. The obtained emission spectrum is analyzed and the plasma temperature is calculated at voltage intervals with a distance of 320 volts. The values obtained are compared with the values of the Langmuir dual probe made. The calculated values of the spectroscopy are very close to the values obtained from the probe}, Keywords = {Langmuir double probe, DC glow discharge plasma, optical emission spectroscopy, neon gas.}, volume = {28}, Number = {2}, pages = {628-631}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2665-en.html}, eprint = {http://opsi.ir/article-1-2665-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {kargariaan, Amene and Ghapanvari, Maryam}, title = {Investigation of laser heating of magnetized electron-ion-positron plasma}, abstract ={In this paper, the absorption of nonlinear laser energy in electron-positron-ion plasma in the presence of an axial magnetic field is studied using the 2D PIC simulation method. The results show the absorption of laser energy in the electron-positron-ion plasma increases with increasing positron-to-electron density ratio. Moreover, the absorption rate increases even more by magnetic field. The obtained results on the magnetized plasma heating can be related to the astrophysical laboratory environments.}, Keywords = {Electron-positron-ion plasma, PIC simulation, plasma heating, magnetic field}, volume = {28}, Number = {2}, pages = {636-639}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2720-en.html}, eprint = {http://opsi.ir/article-1-2720-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {mokhtaripar, Mahdi and Naderali, Rahim}, title = {Design and fabrication of plasma antenna with the ability to change the plasma frequency}, abstract ={In this paper, the design and fabrication of plasma antenna based on fluorescent lamps are discussed. Calculation of ambient plasma frequency and study of its behavior in terms of other physical variables is on the agenda and by calculating the specific conductivity of the plasma and its changes according to the input power designed by the system in terms of variable ballast and controllable dimmer it is possible to check the function of this type antenna in the VHF frequency range. By calculating the plasma frequency function in terms of current intensity, the properties of reflection, absorption and transmission of electromagnetic waves from the plasma were investigated and it was found that the operating range of the plasma considered as an antenna is in the range below 1.77 GHz. The designed system ultimately supports a transient current in the range of 0.5(A), and with the emergence of specific conductivity of about 7( ), the plasma antenna exhibits acceptable in the range of radio waves with the frequency Modulation.}, Keywords = {Electromagnetic waves, Fluorescent lamp, Impact ionization, Plasma antenna, Plasma frequency}, volume = {28}, Number = {2}, pages = {640-643}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2552-en.html}, eprint = {http://opsi.ir/article-1-2552-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {barzegar, BAhram and Hasanbeigi, Ali and Mehdian, Hass}, title = {Effect of magnetic field on electron acceleration gradient in a plasma-filled waveguide by twisted electromagnetic waves}, abstract ={Abstract-In this paper, we consider a single-particle model, in this model, the electron acceleration gradient in a plasma-filled waveguide is calculated using the interaction of twist electromagnetic waves with magnetic plasma. In this simulation, the electron acceleration gradient is performed using numerical calculations. Numerical results show that during the passage of electrons along the waveguide, twist electromagnetic waves and static magnetic field affect on the  electron acceleration gradient.}, Keywords = {electron acceleration gradient, twisted electromagnetic waves, magnetized plasma-plasma waveguide, TM mode.}, volume = {28}, Number = {2}, pages = {644-647}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2742-en.html}, eprint = {http://opsi.ir/article-1-2742-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {HosseinzadeFirouzi, Mona and Yousefi, Leila and Mehramiz, Ahm}, title = {The effect of current carriers on the properties of acoustic waves in solid state quantum mediums}, abstract ={In this research, we have investigated analytically the changes in the acoustic waves gain across a solid-state medium using quantum fluid equations. First, by considering the corrections caused by the quantum fluctuation in the density of current carriers, we have obtained the wave dispersion relation and then we calculated the gain coefficient. Analytical and numerical results show that changes in wave frequency and drift velocity of carriers affect the acoustic waves gain and the presence of positive current carriers reduces the gain coefficient.}, Keywords = {Acoustic waves, Gain, Piezoelectric, Plasma semiconductor}, volume = {28}, Number = {2}, pages = {652-655}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2607-en.html}, eprint = {http://opsi.ir/article-1-2607-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Moshtaghifard, Fatemeh and Askari, Asghar and Rahiminejad, Laleh}, title = {A near infrared refractive index sensor based on double-step all-metal grating}, abstract ={In recent years, surface plasmonic-based sensors have received a great deal of attention due to their high sensitivity and ability to integrate into dimensions smaller than the wavelength. In this paper, a refractive index sensor based on an all-metal grating with a simple structure is proposed and investigated. For the proposed structure, plasmonic absorption occurs in the visible and near-infrared wavelength region. In addition to a parameter such as period, another factor such as the grating surface profile also affects the absorption spectrum properties; Finite element simulations show that with a small and appropriate change in the profile of a typical grating, the value of the figure of merit can be greatly increased.}, Keywords = {plasmonic, all-metal grating, refractive index sensor}, volume = {28}, Number = {2}, pages = {657-660}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2676-en.html}, eprint = {http://opsi.ir/article-1-2676-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Najjari, Vahid and Mirzanejad, saeed and Ghadi, Ami}, title = {Four channels wavelength plasmonic filter including waveguide and crescent-shape cavity}, abstract ={Abstract- A plasmonic filter consisting of a Metal-Insulator-Metal waveguide (MIM) with a crescent-shaped cavity is proposed. The transmittance and Full Width at Half Maximum (FWHM) of the resonant peaks have been analyzed by the Finite Difference Time Domain method. The results show the production of four Fano resonances after optimizing the structure that the wavelength and the resonance line-shape can be adjusted by changing the geometry of the device. Thus, this device can be used as band-pass filter. Our studies for the new structure also show that the transmittance at wavelengths greater than 1200nm is almost zero, which is important for the cut-off filters.}, Keywords = {Plasmon wavelength filter, Metal-Insulator-Metal (MIM) waveguide, plasmonic structures, Finite Difference Time Domain method (FDTD), Surface plasmon-polaritons}, volume = {28}, Number = {2}, pages = {661-665}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2774-en.html}, eprint = {http://opsi.ir/article-1-2774-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Simiari, Mahdi and SepehriJavan, Nasser and kheiandish, Asef}, title = {Analytical study of Optical properties of Metallic nanoparticle dimer in the dipole approximation}, abstract ={In this study, using a modified Drude model, in the dipole approximation, we have analytically investigated the optical properties of spherical gold nanoparticle dimer in the interaction with a laser beam whose polarization is parallel to the orientation of the dimer. Effect of the nanoparticles interaction on the extinction efficiency is studied and it is shown that the interparticle interaction causes an increase in the extinction efficiency and the red-shift of the plasmon resonance wavelength area. Complex permittivity of the gold nanoparticle dimer is presented for different values of nanoparticles separation. Comparing with an individual nanoparticle, it is noticed that the interaction of nanoparticles leads to the decrease in the absolute value of the real part of the permittivity and decrease in its imaginary part as well. Finally, it is shown that a cubic or an exponential relation with respect to the radius separation of nanoparticles can be fitted for the displacement of plasmon resonance wavelength.}, Keywords = {red-shift, dipole-dipole interaction, plasmon, laser, gold nanoparticle, dimer.}, volume = {28}, Number = {2}, pages = {666-669}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2624-en.html}, eprint = {http://opsi.ir/article-1-2624-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Ghasemnejad, Amirhossein and Ghorbanzadeh, Mostaf}, title = {An Investigation of a Hybrid Plasmonic-photonic Mode Micro-Ring Resonator Sensor}, abstract ={In this paper we investigate a compact double and single micro-ring resonator sensor based on a hybrid plasmonic and photonic waveguides on a silicon-on-insulator substrate. The hybrid waveguide is consisting of a metal-gap-silicon structure, where the optical energy is greatly enhanced in a narrow gap. We use the finite-difference time-domain (FDTD) method to numerically simulate the device optical characteristics as an optical sensor. The sensitivity of the proposed hybrid double micro-ring resonator is large due to the large overlap with the upper-environment sensing medium. The sensitivity of the device depends on the presence or absence of a metal disk and can be designed based on the application of the sensor. The best quality factor of 4874.65 is obtained for double ring resonator with 4.2 µm and 3.8 µm ring radius in presence of gold discs. The main benefit of the proposed hybrid micro-ring resonator sensors is high sensitivity. This sensor can be potentially integrated in an array to form lab-on-chip biochemical sensing devices.}, Keywords = {single ring resonator, double ring resonator, quality factor, sensitivity, transmission curve}, volume = {28}, Number = {2}, pages = {670-673}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2565-en.html}, eprint = {http://opsi.ir/article-1-2565-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {rostami, mona and Babaei, Ferydo}, title = {Tuning surface plasmon- polariton and exciton coupling via concentration of excitonic semiconductor in a twolayer structure}, abstract ={In this paper, tuning surface plasmon- polariton and exciton coupling via concentration dependent of excitonic semiconductor ( fj ) in a twolayer structure has been studied theoretically in Kretschmann configuration. Optical absorption spectrums of the coupling structure at different values of fj ، have upper and lower polariton branches. By tuning the concentration of excitonic semiconductor from 0.06 to 0.1, the coupling strength between plasmon and exciton increases.}, Keywords = {: Exciton, Surface plasmon- polariton, plexciton, Rabi splitting}, volume = {28}, Number = {2}, pages = {674-677}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2690-en.html}, eprint = {http://opsi.ir/article-1-2690-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Gomroki, Susan and Rakhshani, Mohammad Reza and Mansouri-Birjandi, Mohamm Alili}, title = {Design of High Sensitivity Sensor using Surface Plasmon Resonance in Metal/Dielectric/Metal H-Shaped Structure}, abstract ={In this paper, a high-sensitivity surface plasmon resonance (SPP) based sensor is analyzed and simulated by the finite difference time domain method. The sensor is based on a metal/dielectric/metal waveguide and an H-shaped resonator. In recent years, the need to analyze various chemical and physical parameters using photonic sensors has increased. Because this sensor is based on SPP, there is a very strong interaction between the input electromagnetic wave and the metal, which leads to high sensitivity. The sensitivity of this structure is 1910 nm / RIU with an FWHM of 165 nm at a wavelength of 2950 nm. The sensitivity obtained in this article is competitive with other previously published articles. This structure can be used to detect different biological materials}, Keywords = {Plasmonic Sensor, Sensitivity, FDTD Method, Refractive Index, Metallic Film}, volume = {28}, Number = {2}, pages = {678-681}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2616-en.html}, eprint = {http://opsi.ir/article-1-2616-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Mohandes, Aminreza and Moradi, Mahmood and nadgaran, Hami}, title = {Effects of linear band gap on electron and hole defect density on the perovskite solar cell with the absorption layer K3.5Rb0.05(FA0.85 MA0.15)0.95Pb(I0.85 Br0.15)3}, abstract ={For the first time, a novel of quadruple-cation perovskite absorber, KRbFAMA, is introduced. The simulation of current density-voltage (J-V) and external quantum efficiency (EQE) curves of perovskite solar cell (PSC) were numerically simulated by SCAPS. The efficiency of the PSC was enhanced by considering the effects of electron and hole defect densities in the layer of absorber. After optimizing the mentioned parameters, efficiency is reached to 23.91%.}, Keywords = {Current density-Voltage, Electron defect density, External quantum efficiency, Hole defect density, and Perovskite}, volume = {28}, Number = {2}, pages = {683-686}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2588-en.html}, eprint = {http://opsi.ir/article-1-2588-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Dehghanipour, Masoud and Behjat, Abbas and Hajishabani, Ali mohammad and Haddad, Mohammad Ali}, title = {Tailored 2D/3D Hybrid Perovskite Films for Solar Cell Application with Additive Engineering Approach}, abstract ={Herein, tetrabutylammonium tetrafluoroborate (TBABF4) salt was used to fabricate a 2D/3D structure over the 3D perovskite film. It raised the efficiency and stability behavior of perovskite solar cells (PSCs). To gain further enhancement in properties of the 2D/3D bi-layer, methylammonium chloride as an additive was incorporated into a 2D TBABF4-based capping layer. The additive engineering approach could improve the optical and morphological properties of the 2D/3D perovskite layers and the photovoltaic performance of the reference 2D/3D PSCs. A champion power conversion efficiency (PCE) of 18.09% was obtained for the 2D/3D devices modified with the MACl additive; it was 14% higher than the fabricated reference cells (15.81%). The developed additive engineering dramatically reduced charge recombination in the perovskite film and facilitated the charge transport processes at the interface of perovskite-HTL.}, Keywords = {Photovoltaic, Perovskite solar cells, Hybrid perovskites, Methylammonium chloride}, volume = {28}, Number = {2}, pages = {687-690}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2768-en.html}, eprint = {http://opsi.ir/article-1-2768-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Marashi, seyed adnan and rezvanijalal, Masoud and Abdykian, Alirez}, title = {Study of Anti-reflection Coating for Incoherent Light Taking into Account the Thickness Fluctuation of the Layer}, abstract ={In this paper, the reflection of an anti-reflection coating is calculated for the case where the coating has thickness fluctuation and the light is considered to be incoherent. To find the reflection, the technique of optical transfer matrix is used. A computational code in Mathematica language is written to find the reflection value in the presence of arbitrary thickness fluctuation and coherence length. It is found from the computation results that inclusion of any value of fluctuation or coherence causes the minimum reflection to be no longer zero. On the other hand, the calculations show that the minimum value of reflection occurs at a refractive index that is rather different from the familiar nc=(nsnm)1/2 relation, where ns and nm are refractive indices of substrate and upper medium, respectively, and nc is refractive index of the coating.}, Keywords = {Anti-reflection coating, Incoherent light, Thickness fluctuation.}, volume = {28}, Number = {2}, pages = {691-694}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2782-en.html}, eprint = {http://opsi.ir/article-1-2782-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {amini, Ali and Zakerhamidi, mohammad sadegh and Khorram, Sirous}, title = {Effect of the Glow Discharge Plasma on the short circuit current improvement in DSSCs}, abstract ={The ZnO thin films were prepared via the sol-gel method and then treated in Ar and N2 glow discharge plasma. The electric field in the Ar plasma sheath is stronger than the N2 plasma, so the crystalline changes in the ZnO/Ar were larger in comparison to ZnO/N2. A detailed study of the dispersion parameters and the third-order nonlinear optical susceptibilities represented alterations in the chemical properties of the thin films' surface. The plasma remarkably enhances the Zn-N719 electronic coupling via the reduction of the Zn2+/dye complexes. The short circuit photocurrent densities showed the electronic coupling improvement.}, Keywords = {Glow discharge plasma, N719 dye, Sol-Gel, Zn2+/dye complex, ZnO.}, volume = {28}, Number = {2}, pages = {695-698}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2725-en.html}, eprint = {http://opsi.ir/article-1-2725-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Rahmani, iman and Ghanaatshoar, maji}, title = {Influence of Sulfurization Process Temperature on CFT Thin Film Deposited by Pulsed Laser Deposition (PLD)}, abstract ={Abstract - We study the Cu2FeSnS4 (CFTS) thin film, created through pulsed laser deposition (PLD). Copper, iron and tin as the raw materials are mixed in the form of tablets and then are deposited on a glass substrate. The produced metallic layers are then sulfurized at temperatures of 550 ℃ and 600 ℃ for merging sulfur in the thin film and forming CFTS structure. The X-ray diffraction (XRD), Raman and UV-Vis analyses results show that by decrease in the sulfurization temperature from 600 ℃ to 550 ℃ the crystal quality of the layers is improved, which is realized by increase in volume and quality of the CFTS phase.}, Keywords = {Sulfurization, Thin Film, Pulsed Laser Deposition (PLD), CFTS}, volume = {28}, Number = {2}, pages = {699-702}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2660-en.html}, eprint = {http://opsi.ir/article-1-2660-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {shokrollahi, zeynab and piralaee, mina and Asgari, asghar}, title = {The role of active layer thickness on performance parameters of P3HT: PCBM organic solar cell.}, abstract ={Abstract- Recently, organic solar cells have attracted high attention due to their high power conversion efficiency, low cost and manufacturing technology in a variety of approaches. In this paper, a bulk heterojunction organic solar cell with P3HT: PCBM active layer is investigated at different thicknesses, which is simulated using Scaps simulation software. We have studied the effects of altering the thickness on characteristic performance parameters of the solar cell, including: short-circuit current, open voltage, filling factor and power conversion efficiency. The results show that by increasing the thickness from a certain value onwards, due to the losses caused by recombination inside the layers as well as the related surfaces, the efficiency does not increase to the desired extent.}, Keywords = {Keywords: organic solar cell, recombination processes, Scaps simulation, power conversion efficiency.}, volume = {28}, Number = {2}, pages = {703-706}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2650-en.html}, eprint = {http://opsi.ir/article-1-2650-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {hosseini, zahra and jafarizade, kosar}, title = {Investigation of The Effect of Thickness and Defect Density in The Absorber Layer on Perovskite-based Solar Cell Performance}, abstract ={The relatively large bandgaps of the methylammonium lead halide perovskites are the major obstacle to achieving efficiency in the lead-based perovskite solar cells. Substituting lead with tin leads to smaller bandgaps for lead-free perovskite materials. Although lead-free perovskite solar cells show broader spectral response extended to near infrared region, they usually have relatively low responsivity. Here, we investigated the application of a mixed tin-lead perovskite material, ((FASnI3)0.6(MAPbI3)0.4), with small bandgap of 1.24 eV as the absorber material in a perovskite solar cell with inverted structure. The device simulation is performed by using SCAPS-1D simulation software. The effect of different parameters such as absorber layer quality and thickness on the performance of the (FASnI3)0.6(MAPbI3)0.4 solar cell is studied.}, Keywords = {defect density, PCE, perovskite, solar cell, VOC}, volume = {28}, Number = {2}, pages = {707-710}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2670-en.html}, eprint = {http://opsi.ir/article-1-2670-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {AnnabiMilani, Elmira and Piralaee, Mina and Asgari, Asghar}, title = {Optimization of Semi-transparent Organic Ternary Solar Cells with Non-Fullerene Acceptor: The Thickness Effects}, abstract ={ Polymer solar cells attracted a lot of attention due to their low cost and ability of high power conversion efficiency. One of the important features of organic solar cells is their application in transparent devices, leads to the emergence of novel perspectives in applications such as windows, curtains and roof coverings to generate electricity for buildings and cars and many architectural applications. Recently, non-fullerene small molecule acceptors known as good alternative to conventional fullerene acceptors. In this paper, we simulate ternary polymer solar cell with a non-fullerene acceptor with semi-transparent properties. The results show that with increasing the thickness of the active layer, the short-circuit current gradually increases, but the filling factor decreases due to the increase in recombination, which leads to an increment in the conversion efficiency up to a certain value, and then decreases. In this work, the optimal thickness of the active layer is 100 nm. Also, the quantum efficiency of the structure increases with thickness at wavelengths shorter than 500 nm and decreases for higher wavelengths due to increased recombination in the active layer, which leads to reduced carrier shrinkage.}, Keywords = {organic materials, non-fullerene materials, ternary solar cell, semi-transparent polymer.}, volume = {28}, Number = {2}, pages = {711-714}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2654-en.html}, eprint = {http://opsi.ir/article-1-2654-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Hasanzadeh, Hamideh and Rooholamininejad, Hossein and saheb, vahi}, title = {Synthesis of GO-Au nanocomposite and its application in dye solar cell}, abstract ={The aim of this study is the synthesis and utilization of a nanostructure based on graphene and gold in the photoanode of dye sensitized solar cell. The plasmonic properties of gold nanoparticles increase the absorption of the visible region. On the other hand, graphene oxide with its efficient properties such as high transparency in the visible region, low resistance to electron transfer, stability and high specific surface area can be used in the electron transfer layer and photoanode of the cell, which here an optimal nanocomposite was made for photoanode of dye solar cell with applying an appropriate synthesis method and proper bonding of gold nanoparticles to graphene plates. In addition, the use of gold nanoparticles with a very small size of 2 nm in the dye solution was able to increase the absorption in the dye. The reason for choosing a small size is that the nanoparticles do not interfere with the adsorption of dye on the surface of TiO2.}, Keywords = {Graphene oxide, plasmonics, dye solar cell, gold nanoparticles, nanocomposite}, volume = {28}, Number = {2}, pages = {715-718}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2550-en.html}, eprint = {http://opsi.ir/article-1-2550-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Gholami-Milani, Alireza and Ahmadi-Kandjani, Sohrab and Olyaeefar, babak and Kermani, Hojat}, title = {Design, Characterization and Optimization of the Thickness of Perovskite layer in Perovskite/Si Tandem Solar Cell}, abstract ={Nowadays, the use of tandem solar cells comprised of semiconductor materials has attracted attention due to high efficiency and high spectral absorption region. In this paper we simulated a two-terminal tandem solar cell which are connected together by a recombination layer. For simulation of tandem solar cell, we first present a structure and then by optimization the thickness of the perovskite layer, we obtain 26.99% efficiency for this tandem.}, Keywords = {Tandem solar cell, Perovskite solar cell, Silicon solar cell.}, volume = {28}, Number = {2}, pages = {719-722}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2651-en.html}, eprint = {http://opsi.ir/article-1-2651-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {GordiArmaki, Mahdi and Moravvej-Farshi, Mohammad Kazem}, title = {The Effect of Quantum Confinement on MEG Threshold in Ga8X8 (X=P, As, Sb) Nanoclusters}, abstract ={In this work, we investigated the effect of quantum confinement on the threshold of the multiple exciton generation (MEG) in three Ga8X8 composite nanoclusters (X = P, As, Sb). The study of this effect was studied using the EOM-CCSD many-body method and the definition of the concepts of "MEG quantum probability" and "degree of quantum confinement, λ". The results show that as element X becomes heavier, the degree of quantum confinement in the structure increases, which reduces the HOMO-LUMO (EHL) gap and the threshold for MEG (ETH) in the nanocluster. Our simulations show that as the atom of the nanocluster becomes heavier, the decrease in EHL and ETH is almost linear, despite the nonlinear increase in the degree of quantum confinement.}, Keywords = {Multiple exciton generation, Quantum confinement, Nanocluster.}, volume = {28}, Number = {2}, pages = {723-726}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2577-en.html}, eprint = {http://opsi.ir/article-1-2577-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {heydaridehkordi, forouzan and Mashreghi, Ali}, title = {The effect of binder used in low temperature carbon paste on photovoltaic properties of carbon based perovskite solar cells}, abstract ={In this paper, a comparison is made between the carbon layer obtained from carbon paste containing polymer binder and that containing inorganic binder. Moreover, the effect of binder type on photovoltaic properties of perovskite solar cell was investigated. For this purpose, first the polymer and mineral carbon pastes were made. Then, carbon layers with different thicknesses were coated by doctor blade method. It was observed that electrical conductivity of carbon layer obtained from mineral carbon paste is higher than that obtained from polymer carbon paste. From I-V curve measurement, it was observed that solar cell with mineral carbon paste is more efficient than solar cells with polymer carbon paste, which was due to its high electrical conductivity.}, Keywords = {Perovskite solar cell, Carbon cathode, Electrical conductivity, Photovoltaic properties}, volume = {28}, Number = {2}, pages = {727-730}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2684-en.html}, eprint = {http://opsi.ir/article-1-2684-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {noori, Darko A. and behjat, Abbass and Dehghanipour, masoud and benvidi, Ali}, title = {Efficiency Enhancement in Perovskite Solar Cells by Doping Lithium Fluoride in Electron Transporting Layer}, abstract ={Recently, adopted perovskite solar cells (PSCs) as the third generation of solar cells based on perovskite materials (ABX3). PSCs have their unique properties, such as low-cost, band-gap tunability, simple fabrication, the opportunity of substrates, and high performance. Titanium dioxide (TiO2) is an attractive choice for the electron transporting layer (ETL) in PSCs. In the current study, lithium fluoride (LiF) dopant was used to enhance electrical properties of the (ETL) and perovskite performance. The results showed that LiF-doping increased the conductivity of TiO2, suppressed electron-hole recombination at ETL/perovskite interface, and improved crystallinity properties of the perovskite layer. Through ETL modification, the performance of PSCs without hole transporting layer (HTL) 48% improved and endowed the devices with a champion power conversion efficiency of 9.33%.}, Keywords = {Lithium fluoride, Perovskite solar cells, Power conversion efficiency, Titanium dioxide, Electron transport layer}, volume = {28}, Number = {2}, pages = {731-734}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2765-en.html}, eprint = {http://opsi.ir/article-1-2765-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {hirbodi, sahel and Jamekhorshid, Ahmad and Jalali, Tahmine and osfouri, Shahriar}, title = {Fabrication of dye-sensitized solar cell using TiO2/ZnO nanocomposite for efficiency enhancement}, abstract ={In this paper, composite of TiO2/ZnO nanoparticles were synthesized as photoanode material in fabrication of dye-sensitized solar cell (DSSC) and characterized by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR) analyses and then synthesized nano-powder turned into a paste using prepared solution. It is demonstrated that this nano-composite photoanode provides better photovoltaic performance compare with using bare form of mentioned semiconductor oxides. The performance of fabricated cell was evaluated with solar simulator (100 mW/cm2) and photoelectric conversion efficiency (PEC) of 1.04% is given. Also, other photovoltaic parameters include short circuit current density (ISC), open circuit voltage and fill factor are 4.84 mA/cm2, 0.7045 V and 0.3047, respectively.}, Keywords = {Dye-sensitized solar cells, Nanostructure, Photoanode, Photovoltaic, TiO2/ZnO nanocomposite}, volume = {28}, Number = {2}, pages = {735-738}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2561-en.html}, eprint = {http://opsi.ir/article-1-2561-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Mozafari, mahnaz and Behjat, abbass and Haddad, Mohammad Ali and Benvidi, Ali}, title = {Phenyltrimethylammonium iodide effects on photovoltaic properties of hole- transport- free perovskite solar cells}, abstract ={In this research, 3D and 2D/3D perovskite solar cells fabricated through using Phenyltrimethylammonium iodide. After that, our efforts focused on further improvement in the performance of 2D/3D perovskite solar cells through optimizing the annealing temperature. The photovoltaic characterization of solar cell such as the power conversion efficiency (PCE), Fill Factor (FF), Open Circuit Voltage (Voc) and Short Circuit Current (Jsc) were analyzed to obtain the optimum annealing temperature in 150 ◦C. Then, according to the photoluminescence spectrum, it was observed that charge transfer in 2D/3D perovskite solar cells is better than 3D perovskite solar cells, which improves the performance of perovskite solar cells. }, Keywords = {Power conversion efficiency, 3D Perovskite, 2D/3D Perovskite, Perovskite Solar Cell.}, volume = {28}, Number = {2}, pages = {739-742}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2766-en.html}, eprint = {http://opsi.ir/article-1-2766-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {karimimooneh, paris}, title = {The effect of defect on the performance of CsPbI3 inorganic perovskite solar cells : a simulation study}, abstract ={In this paper, the structure of an inorganic perovskite solar cell consisting of FTO/i-ETL/CsPbI3/i-HTL/Au was simulated by SCAPS-1D. electrical efficiency and quantum efficiency were calculated in two conditions : with virtual layer IDL1 and IDL2  and without them. The interface recombination layer between the IDL layers and the perovskite was considered. In this structure, SnO2 and Spiro OMeTAD was used as the electron transfer layer and hole transfer layer, respectively. To consider the influence of interface recombination, the thin virtual layer (IDL1 and IDL2, not indicated in the figure) between HTL/CsPbI3 was considered to simulate a more realistic situation. By considering the Interface recombination defects, the electrical efficiency of this structure has decreased from 13.15% to 11.91%.}, Keywords = {Perovskite, Inorganic solar cells, Virtual layer, Interface recombination defects.}, volume = {28}, Number = {2}, pages = {743-746}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2533-en.html}, eprint = {http://opsi.ir/article-1-2533-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {nazarimonfared, asiyeh and ghorashi, Seyyed mohammad baqer}, title = {Increasing the stability of perovskite solar cells by encapsulation with polymethyl methacrylate polymer to insulate the structure against moisture and heat}, abstract ={One of the major challenges for perovskite solar cell structures is their high sensitivity to ambient moisture and oxygen, which drastically reduces the stability of these devices. For this purpose, an encapsulation method for PSCs is proposed. To encapsulate the structure, a thin layer of PMMA polymer was applied on the perovskite solar cell, followed by glass coating and finally UV epoxy adhesive. After encapsulation, the samples were exposed to the standard conditions for 600 hours and it was observed that the stability of the solar cell, was greatly increased.}, Keywords = {Encapsulation, Perovskite solar cell, PMMA Polymer, Stability}, volume = {28}, Number = {2}, pages = {747-750}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2745-en.html}, eprint = {http://opsi.ir/article-1-2745-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {samadi, masumeh and bahiraei, hamed and Haidari, Gholamhosai}, title = {Investigation of the Effect of Bulk and Interface defects on The Performance ofThin layer Silicon solar cell}, abstract ={Silicon is often considered ideal in research, while its more realistic form has defects, such as in the volume of the silicon layer or at the interface with other layers that affect cell performance. In this study, we first simulated the optical part of a thin layer silicon cell (new generation silicon cell with a thickness of 3 microns) which has an anti-reflective coating with a thickness of 46, 82, and 112 nm by FDTD method. To simulate the electrical part, three states including ideal silicon, silicon with volume defect, and silicon with both simultaneous volumetric defects and at the interface with other layers, have been considered. For this purpose, three methods of radiative recombination, Auger recombination, and recombination by defects were considered. The results of electro-optical simulation showed that the performance of the more real silicon cell than the ideal one is significantly reduced so that even at the best thickness of the anti-reflective layer(82 nm) leads to a reduction of about 50% in cell efficiency compared to the ideal cell.}, Keywords = {thin film silicon solar cell, Bulk defect, Interface defect, electro-optical simulation.}, volume = {28}, Number = {2}, pages = {751-754}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2621-en.html}, eprint = {http://opsi.ir/article-1-2621-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {shadkam, mandana and jalali, tahmineh and mehrabi, mohsen and osfouri, shahriar}, title = {Synthesize TiO2 nanoparticles using sol-gel method for fabrication of dye-sensitized solar cells with natural dye of syzygium cumini fruit}, abstract ={In this study, TiO2 nanoparticles were synthesized using the sol-gel method to obtain a highly crystalline and small particle size of TiO2; the produced nanoparticles were characterized by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). Dye-sensitized solar cell (DSSC) was fabricated with a layer of TiO2 nanoparticles paste deposited on FTO (fluorine-doped tin oxide) glass substrate as a semiconductor oxide film. Also in this study, extracted natural dye from Syzygium Cumini fruit was used for decrease the cost. The photovoltaic parameters were measured using the solar simulator under an incident light intensity of 100 mW/cm2 and air mass (AM1.5). The results show power conversion efficiency (η) of 1.36% and other photovoltaic parameters include short circuit current density (JSC), open-circuit voltage (VOC) and fill factor (FF) are 5.88 mA/cm2, 0.6235 V and 0.3706 respectively.}, Keywords = {Dye-sensitized solar cells, Natural dye, Photoanode, Sol-gel method, TiO2 nanoparticles}, volume = {28}, Number = {2}, pages = {755-758}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2576-en.html}, eprint = {http://opsi.ir/article-1-2576-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {nakhaee, Bit}, title = {The effect of anti-solvent pouring time in one-step method on performance of perovskite solar cell}, abstract ={In this paper, the pouring time of anti-solvent in one-step method to perovskite deposition and its effects on the performance of perovskite solar cells was investigated. For this purpose photoluminescence (PL), current-voltage and X-ray diffraction (XRD) analyzes were used. It was observed that the shorter time interval between the start of the deposition and the pouring of anti-solvent lead to the lower peak intensity of the PL spectrum of the perovskite layer, the higher peak intensity of the perovskite in XRD and so the efficiency of the built solar cell will be higher. According to the results, the optimal time for pouring the anti-solvent was 20 seconds remained before the coating was completed compared to other times, and the efficiency of the constructed solar cell at this time was 5.7%.}, Keywords = {Anti-solvent, one-step deposition, perovskite, solar cell}, volume = {28}, Number = {2}, pages = {759-762}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2773-en.html}, eprint = {http://opsi.ir/article-1-2773-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {motahari, hamid and allahpoor, mojtaba and yazdani, sadegh and alizehi, abdolvali}, title = {Estimating Car to Chl pigments ratio in Berry, Olive and orange leaves using UV-Vis reflectance spectrum}, abstract ={The reflectance spectrum in tree leaves depends on their pigments type and its concentration. Each species have unique spectrum that directly related to its pigments. UV-Vis Reflection spectroscopy offers a fast and nondestructive method for estimating pigments ratio in leaves. In this research three indices, including SIPI, ND and PSRI have been used to determine Cars/Chl ratio. The results show that a sharp decrease in the ratio of carotenoid to chlorophyll for olive leaf to about 172.4 times, orange to 27.7 times, and berry to  about15.6 times.}, Keywords = {Reflectance spectrum, pigments, chlorophyll, carotenoid}, volume = {28}, Number = {2}, pages = {768-771}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2656-en.html}, eprint = {http://opsi.ir/article-1-2656-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {zolfi, Feresheh and soltani, peyman and Panhi, Majid and Darudi, Ahmad and dini, ali}, title = {Detection of aflatoxin in pistachio using fluorescence hyperspectral imaging}, abstract ={Spectral imaging is a combination of imaging and spectroscopy, and for each point of the sample under study, it records an image in hundreds of spectral bands and creates a data cube. Two dimensions of this data cube are related to spatial information and the third dimension represents spectral information. Hyperspectral imaging, due to its high spectral and spatial accuracy, has many applications in identifying different elements of the transient or reflective spectrum. In this paper, a combination of hyperspectral camera and fluorescence phenomenon is presented and its application in food health diagnosis is investigated. In this regard, the detection of aflatoxin contamination in pistachio samples was investigated and analysis of the results by chemometric methods shows a strong correlation between aflatoxin levels and fluorescence radiation.}, Keywords = {Aflatoxin, Fluorescence, Hyperspectral Imaging Camera, Pistachio}, volume = {28}, Number = {2}, pages = {772-775}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2541-en.html}, eprint = {http://opsi.ir/article-1-2541-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Bidarvnad, Iman and matroodi, Fatemeh and Ahadi, Amir mohamm}, title = {Investigation of the effect of the pinhole size on photothermal signal and thermal diffusivity}, abstract ={In this paper we investigate the effect of the pinhole size on the magnitude of the photothermal signal and the result of signal analyses to obtain the thermal diffusivity. In this experiment, in the thermal lens spectroscopy (TLS) setup, a diode laser operating at 532nm and a He-Ne laser operating at 632.8nm were used as pump and probe respectively, and they passed co-linearly through the sample. Pure ethanol (99.5%) was used as the sample. Results show that despite the direct effect of the pinhole size on the magnitude of photothermal signal, if aligned properly, it does not have a considerable effect on analyses of thermal diffusivity.}, Keywords = {photothermal signal, pinhole, thermal diffusivity, thermal lens spectroscopy.}, volume = {28}, Number = {2}, pages = {776-779}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2694-en.html}, eprint = {http://opsi.ir/article-1-2694-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Ahmadialinasab, Yashar}, title = {Comparison of dimensional reduction of PCA and LDA techniques in laser induced breakdown spectroscopy data classification with SVM method}, abstract ={Dimensional reduction is a technique used to increase the accuracy of the classification model. In this study, the effect of dimensional reduction by Principle Component Analysis(PCA) and Linear Discriminant Analysis(LDA) on the classification of laser-induced breakdown spectroscopy(LIBS) data of iron-chromiumnickel alloy samples was investigated using the Support Vector Machine(SVM) method with two linear and Radial Basis kernel(RBF) functions. For PCA method, classification results for SVM method with linear and radial kernels were %100 and %98, respectively, and for LDA method, these results were %100 and %68, respectively. The results showed that the PCA method was more effective than the LDA method in this field.}, Keywords = {Support Vector Machine(SVM), Laser Induced Breakdown Spectroscopy(LIBS), Principle Component Analysis(PCA), Linear Discriminant Analysis(LDA), Kernel Function}, volume = {28}, Number = {2}, pages = {780-783}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2777-en.html}, eprint = {http://opsi.ir/article-1-2777-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Rezaei, Fatemeh and Rezaei, Mohsen and Karimi, Parvi}, title = {Study of the effect of combination of principle component analysis with statistical method of support vector regression in laser induced breakdown spectroscopy}, abstract ={In this paper, concentration of constituent elements of seven standard aluminum’S alloys is predicted by using statistical methods of support vector regression model (SVR and KSVR) and the combinational method of principal component analysis with support vector regression model (PCA_SVR and PCA-KSVR) in laser induced breakdown laser spectroscopy technique. The results of the analyzes showed that the PCA_KSVR method reported the most accurate concentration with the least error for Fe element.}, Keywords = {Laser induced breakdown spectroscopy, Concentration prediction, Principle component analysis, support vector regression.}, volume = {28}, Number = {2}, pages = {784-787}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2657-en.html}, eprint = {http://opsi.ir/article-1-2657-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Akbaryan, Mohammadasif and Motahari, Hamid and KhojehAminian, Mohse}, title = {Raman Study and Vis-NIR reflectance spectroscopy of Co2TiO4, CoTiO3, Co2SiO4, CoSiO3 pigments}, abstract ={  Abstract- In this research Raman and Vis-NIR reflectance spectroscopy of pigments including Co2TiO4، CoTiO3، Co2SiO4 and CoSiO3 has been studied. They can be found in dark green, light green, pink and blue, respectively. The sharp peak of the Co2TiO4 pigment can be seen at 686 cm-1. Also, the Raman peaks of CoTiO3 and Co2SiO4 are 680 cm-1 and 812 cm-1, respectively. The reflectance of Co2TiO4 and CoTiO3 are lower than 20 percent. The reflectance of Co2SiO4 and CoSiO3 are not similar. The reflectance of CoSiO3 was lower than 15 percent, while it is so high and variable for Co2SiO4 and even higher than 60 percent at 915 nm. Keywords: UV-Vis-NIR, Raman Spectroscopy, ceramic pigments, reflectance, colorimetry.  }, Keywords = {UV-Vis-NIR, Raman Spectroscopy, ceramic pigments, reflectance, colorimetry.  }, volume = {28}, Number = {2}, pages = {788-791}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2613-en.html}, eprint = {http://opsi.ir/article-1-2613-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {shetabi, vahid and Taherighahrizjani, Reza and mohajerani, ezeddi}, title = {Prediction and monitoring of leaf water content in cucumber plant using visible-near infrared spectroscopy (VIS/NIR)}, abstract ={The leaf water content of the plant is one of the physiological parameters that is commonly used to describe the growth status and productivity of the crop. Therefore, fast and non-invasive methods are important for predicting and monitoring plant leaf water. In this study, a fast and accurate method was used using visible-infrared spectroscopy (VIS-NIR) in the range (400-1100 nm) on cucumber plant to monitor leaf water content, which can be used to determine other biochemical parameters such as Used chlorophyll. The presented results can lead to the development of portable tools for simultaneous detection of water content and other biochemical parameters quickly and non-invasively.}, Keywords = {Leaf water content, Precision agriculture, UV-VIS spectroscopy.}, volume = {28}, Number = {2}, pages = {792-795}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2562-en.html}, eprint = {http://opsi.ir/article-1-2562-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {talari, behnam and NorouzianAlam, Shahab and Kiani, Hossein and Karami, Sajad and Ghafary, Bij}, title = {Determination of Concentration of the Residual Amoxicillin in Milk Using FTIR Spectroscopy}, abstract ={Abstract- One of the most common methods to observe the presence of unknown compounds in materials and solutions is FTIR Spectroscopy. In this paper, different concentrations of Amoxicillin solution were added to intact milk, and samples were analyzed using FTIR Spectroscopy. IR spectrum can show some absorption peaks, an indication absorption of passing light through the mixture of milk and Amoxicillin molecules. Between 1700 cm-1 to 1800cm-1 spectral region, there is a strong absorption peak, being stronger by increasing the amoxicillin concentration. Applying statistics operation as linear regression and calculate R-square, it revealed that there is a linear relation between concentration and absorption according to beer-lambert law. The R-square factor is about 0.96 with very low RSS (near 0.001).This experiment can be a validation of using the FTIR spectroscopy to detect amoxicillin dopant in milk, which is very useful and applicable in the global and national dairy and food industries.}, Keywords = {Milk, Antibiotic, Amoxicillin, Spectroscopy, Infrared}, volume = {28}, Number = {2}, pages = {796-799}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2740-en.html}, eprint = {http://opsi.ir/article-1-2740-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {TavakkoliVandishi, Mohammad Sadegh and Tavassoli, Has}, title = {Amplification of Cyclohexane Raman Spectra by Fiber-Enhanced Raman Spectroscopy (FERS)}, abstract ={Raman spectroscopy as a powerful sensing method has attracted the attention of many researchers. Disadvantages of this method are low cross-section of Raman scattering and weak Raman signal. Several methods have been proposed to amplify the Raman signal, including fiber-enhanced Raman spectroscopy. In this method, by increasing the optical path length, the interaction of the laser light with the sample increases and the Raman signal is amplified. Hollow core fibers and capillary tubes are often used. In capillary tubes, in order to Total internal reflection, liquids with a refractive index higher than the refractive index glass of the capillary tube are used. In this research, capillary tubes containing cyclohexane have been used as a target sample with a refractive index lower than glass, in different dimensions, as a waveguide. The effects of capillary tube diameter and length on increasing Raman signal were also investigated.}, Keywords = {Capillary Tube, Cyclohexane, Fiber-Enhanced Raman Spectroscopy, Refractive Index, Total Internal Reflection}, volume = {28}, Number = {2}, pages = {800-803}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2617-en.html}, eprint = {http://opsi.ir/article-1-2617-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {noori, adele and Bahreini, Maryam and aref, , Seyed Hashem}, title = {The impact of tip material and coating on electric field enhancement of tip-enhanced Raman spectroscopy (TERS)}, abstract ={In this paper, the finite difference time domain (FDTD) method is used to estimate the intensity and distribution of localized electric field enhancement in tip-enhanced Raman spectroscopy (TERS) in the vicinity of a conical tip with a diameter of 10 nm. The effect of using different tip materials in the vicinity of the substrate and also the effect of different tip coatings on the amount of electric field enhancement have been investigated. Tips in our TERS systems are made of materials such as gold, silver, aluminum and silicon, as well as a combination of these materials as coatings. Our simulation results show that the maximum enhancement produced with gold coating and substrate; and  the lower the extinction coefficient of the metal material, the more electric field enhancement is created.}, Keywords = {Electric Field Enhancement, Finite Difference Time Domain, Raman Spectroscopy, Tip-Enhanced Raman Spectroscopy.}, volume = {28}, Number = {2}, pages = {804-807}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2709-en.html}, eprint = {http://opsi.ir/article-1-2709-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Hossein, Fatemeh and souri, Dariush}, title = {Determination of the optical band gap of MoO3-V2O5-TeO2 glasses by DASF method}, abstract ={In this research, the bulk samples of xMoO3-(60-x)V2O5-40TeO2 compositions with different molar contents of 0≤x≤60 were prepared by rapid melt-quenching method. To investigate the optical properties, the optical absorption spectra of samples were taken within the wavelength range of 190-1100 nm. Then, derivation of absorption spectrum fitting method (shortened as DASF) was used as precise approach to determine the band gap and the exact nature of charge carriers transition. Results show that the minimum optical band gap is equal to 2.38 eV for x = 10. In addition, some optical quantities such as the width of the band tails (Urbach energy), refractive index (n) and dielectric constant (ε) were obtained for the under studied glasses. Results imply that the TVM10 sample is the optimal sample for optical applications such as optical fibers.}, Keywords = {derivation of absorption spectrum fitting, optical band gap, Urbach energy, refractive index}, volume = {28}, Number = {2}, pages = {808-811}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2702-en.html}, eprint = {http://opsi.ir/article-1-2702-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Azadi, Moein and Sharifi, Soheil and Hoseini, Mehdi}, title = {The effect of phenylalanine amino acid on the linear and nonlinear optical behavior of methyl red}, abstract ={In this study, the linear and Nonlinear absorption spectra of methyl red along with various concentrations of phenylalanine amino acid using a scanner and an optical spectrometer have been investigated. Also, The dipole moment of methyl red and phenylalanine molecules has been investigated.}, Keywords = {Adsorption , Methyl Red , Nonlinear Optics , Phenylalanine}, volume = {28}, Number = {2}, pages = {812-815}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2751-en.html}, eprint = {http://opsi.ir/article-1-2751-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {minaee, shiva and Tavassoli, Seyed Hass}, title = {Emission of photonic Nano jets by dielectric microspheres}, abstract ={In this study, the effect of the presence of SiO2 dielectric microspheres in the surface-enhanced Raman spectroscopy (SERS) method has been investigated by simulation. For this purpose, plane waves were irradiated to SiO2 microspheres in the presence of two gold nanoparticles and the production of substituted photonic nano jets was investigated. The results of the finite difference time domain (FDTD) simulation illustrated that SiO2 dielectric microspheres result in a better field distribution than the conventional (SERS) method. Therefore, the method used in this study is more efficient than conventional SERS methods, and by changing parameters such as refractive index, particle size, and incident wavelength, the intensity, position and, working distance of photonic nano jets can be adjusted.}, Keywords = {Dielectric microspheres, surface enhanced Raman Spectroscopy, Lumerical simulation, photonic nanojets}, volume = {28}, Number = {2}, pages = {816-819}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2609-en.html}, eprint = {http://opsi.ir/article-1-2609-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {gholipour, somayeh and bahreini, Maryam and jafarfard, Mohammad reza and hoseinzadegan, ahmad and mohseni, Majid and rafiei, Ali and bastani, parni}, title = {Study of UV light effect on graphene oxidation using Raman spectroscopy}, abstract ={Variations in properties due to graphene oxidation on one hand lead to the development of applications of graphene and materials based on it and on the other hand is considered as a disturbing factor in graphene research. One way to oxidize graphene is to use ultraviolet light. Using appropriate tools to distinguish graphene from oxidized graphene and studying the characteristics of each one can be useful in advanced research goals. In this work, a mercury lamp has been used as a source of ultraviolet light and the process of oxidation of graphene exposed to ultraviolet light has been investigated by Raman spectroscopy. The evoluation of graphene spectra, including the disappearance of the 2D peak and the emergence of the D peak, confirms the oxidation of the sample. The intensity and position of D peak increase as a function of exposure time.}, Keywords = {Graphene, Graphene oxide, Raman spectroscopy, Defective graphene, Ultraviolet light}, volume = {28}, Number = {2}, pages = {820-823}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2707-en.html}, eprint = {http://opsi.ir/article-1-2707-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Mirzaei, Ali and Hamidi, Seyedeh Mehri and Ranjbaran, Maliheh and mosleh, mohamm}, title = {Sub Doppler spectral resolution of Rubidium vapor by frequency modulation spectroscopy}, abstract ={Accurate measurement of atomic transition between hyperfine splitting needs complicated measurement methods, as hyperfine states are sensitive to small changes in medium. Doppler and collisional broadenings are of Best-known limitations in experimental studies of hyperfine splitting that because hyperfine spectra be not fully resolved. In this study we experimentally show that frequency modulation of atomic transitions significantly increases spectral resolution of hyperfine splitting measurement. Also, our results prove considerable increase of signal to noise ratio because of impact of FM spectroscopic method.}, Keywords = {Atomic Cell, Doppler Broadening, Modulation Frequency spectroscopy, Rubidium vapor}, volume = {28}, Number = {2}, pages = {824-827}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2772-en.html}, eprint = {http://opsi.ir/article-1-2772-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Mollaaghababayi, Maede and HematiFarsani, Marziyeh and Mobashery, Abolhasan and Darbany, Mohammad rez}, title = {Using Inverse Spatial Offset Raman Spectroscopy (I-SORS) for detecting covering pharmaceutical substances}, abstract ={Different techniques have proposed for detection of covered substances and pharmaceutical samples without damaging them. Pharmaceutical samples with turbid cover cause of more fluorescence could not be detected by conventional Raman. In this project one of these techniques based on Raman spectroscopy was demonstrated which called Inverse SORS and it has used to detect acetaminophen tablet in usual coloure covers in pharmacies like white, yellow and red. Results show, by using this matter picks which hidden in conventional Raman have appeared and high signal to noise ratio was registered.}, Keywords = {Inverse SORS, Raman, Pharmaceutical Substances, Cover, fluorescence}, volume = {28}, Number = {2}, pages = {828-831}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2729-en.html}, eprint = {http://opsi.ir/article-1-2729-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Aliporghoveh, Neda and Barvestani, Jamal and Meshginghalam, Bahar}, title = {The investigation of Au and 〖TiO〗_2based surface plasmon resonance sensor in a D-shape photonic crystal fiber}, abstract ={Abstract –In this work, a photonic crystal fiber with a D-shaped cross section is presented as a sensor which is based on surface plasmon resonance. Mechanism of proposed sensor related to the variations of refractive index of analyte in the environment. The effect of surface geometry and structure on the wavelength and amplitude sensitivities has been investigated. The results show that changes in the surface geometry, structure and also introducing of titanium oxide have improved the performance of proposed sensor. The proposed sensor might have significant applications in identifying a variety of diseases and biomolecules.}, Keywords = {Keywords: Surface plasmon resonance, Refractive index sensor, Wavelength Sensitivity, Amplitude Sensitivity, Photonic crystal fibre}, volume = {28}, Number = {2}, pages = {833-836}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2583-en.html}, eprint = {http://opsi.ir/article-1-2583-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {kargariaan, Amene and ZAre, somayeh}, title = {Investigation of self-magnetic field effect on electron acceleration in IFEL mechanism}, abstract ={In this paper, the effect of a self-induced magnetic field on the electron acceleration by a plasma wave and on the free electron laser mechanism (IFEL) with a horizontal wiggler is investigated. In this mechanism, the electron moves in the wiggler field and receives energy from the plasma wave generated by the laser. Increasing the amplitude of the wiggler field increases the energy of the electron. In addition, the results show that the self- field created by the current generated by the energetic electrons increases the amplitude of the electron oscillations as well as the electron acceleration.}, Keywords = {Inverse free electron laser, horizontal wiggler, self magnetic field, plasma wave}, volume = {28}, Number = {2}, pages = {836-839}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2708-en.html}, eprint = {http://opsi.ir/article-1-2708-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {molaeifard, amin and JavadianSarraf, Mohammad and khatib, farzan and atarankakhgi, ebrahim}, title = {Hydrogen Sulfide Gas Sensor Based On Photonic Crystal Fiber}, abstract ={In this paper, a new geometric structure is designed for a photonic crystal fiber as a hydrogen sulfide gas sensor. The PCF-based gas sensors can detect the concentration of chemical material such as hydrogen sulfide. The geometric structure design is such that it enhances the interaction of light and gas in the fiber core and decreases the confinement loss and increases the relative sensitivity of the sensor. The overall calculation is completed by using a finite element method (FEM) with a perfectly matched layer (PML) boundary condition. The investigated results reveal the relative sensitivity of 47.394%   and confinement loss of 1.1×10-5 dB/cm at the 1.55µm wavelength.}, Keywords = {Gas sensor, PCF, relative sensitivity, confinement loss, hydrogen sulfide}, volume = {28}, Number = {2}, pages = {837-840}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2526-en.html}, eprint = {http://opsi.ir/article-1-2526-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {mirzaei, saee}, title = {Simulation of bright soliton in optical fiber}, abstract ={Abstract- In this paper, has been studied the nonlinear and dispersion effects in the optical fiber and also the bright soliton is simulated using the Optisystem software. In the configuration of simulation setup is used from the single mode fiber (SMF) and optical system.  We can adjust the nonlinear and dispersion effects and the fiber length and also the effective area}, Keywords = {Nonlinear effects, bright soliton, Optical fiber, Optisystem.}, volume = {28}, Number = {2}, pages = {845-848}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2713-en.html}, eprint = {http://opsi.ir/article-1-2713-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {gholipour, Alireza and raveshtian, mohamm}, title = {Modeling of Backhaul/Fronthaul Networks of 5G Cellular Telecommunication Based on XGPON Technology}, abstract ={In order to achieve the data speed predicted in the fifth generation of mobile telecommunications (5G) as well as to reduce latency, the capacity of the Backhaul / Fronthaul segment of the mobile telecommunication network must be increased. On the other hand, with the increase in frequency and data rate in 5G standards, (which will lead to an increase in the number of base stations and the occurrence of construction problems and increase the cost of network implementation) the need for more mobile and fixed telecommunications integration in the network Telecommunications are felt. In this paper, the compatibility of the two passive optical access technologies (XGPON) and mobile (5G) from the point of view of sharing the ODN section in the Backhaul / Fronthaul section of the 5G network has been investigated using power, delay and CNR budget analyzes. The simulations are performed in Optisystem software and the results prove the consistency of the idea proposed in the convergence of fixed and mobile telecommunications.}, Keywords = {Optical Distribution Network, Passive Optical Networks, Fifth Generation of Mobile Telecommunication}, volume = {28}, Number = {2}, pages = {849-852}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2701-en.html}, eprint = {http://opsi.ir/article-1-2701-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Parva, saba and Hatami, Mohsen and Honarasa, Gholamrez}, title = {Effect of phase on soliton propagation in few-mode fiber}, abstract ={Recently soliton propagation in few-mode fiber has been studied. In this paper, we used commercially few-mode fiber for investigating the soliton propagation. Three modes exist in this fiber, by considering polarization, we have six propagation modes. Initially, we calculate the propagation mode, effective cross-section, and dispersion for each mode then soliton propagation in fiber modes respect to phase are simulated. The nonlinear effect causes XPM which affects propagation modes to each other. Interestingly, these effects cause energy transfer between different modes and strongly depend on the phase difference. So, the results of this simulation can be used to design a self-organized all-optical switch.}, Keywords = {all-optical switching, bright soliton, cross phase modulation, few modes fiber}, volume = {28}, Number = {2}, pages = {853-856}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2756-en.html}, eprint = {http://opsi.ir/article-1-2756-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Talebi, Vahid and Soofi, Hadi}, title = {Simulation and Analysis of Distributed Partial Discharge Sensing in Power Transformer Oil, Employing Apodized Phase Shifted FBG}, abstract ={In this research, a distributed partial discharge detection system based on optical fiber sensing, and employing Apodized π-Phase Shifted Fiber Bragg Grating (FBG) sensors is proposed and analyzed, in order to detect power transformer oil breakdown. It is shown that applying phase shift on FBG can extremely enhance its sensitivity. In addition, by applying a Gaussian apodizaion on the FBG, we obtain almost 100% sidelobe suppression in its spectrum, which not merely does result in accurate detection but also gives us another degree of freedom to manipulate the line width of the sensor to the desired value.}, Keywords = {Apodized FBG, Distributed Sensing, Optical Fiber Sensor, Partial Discharge, Transformer Oil}, volume = {28}, Number = {2}, pages = {857-860}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2746-en.html}, eprint = {http://opsi.ir/article-1-2746-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Bahrami-Chenaghlou, Faezeh and Habibzadeh-Sharif, amir and Ahmadpour, Afshi}, title = {Engineering the Spectral Characteristics of Silicon All-Pass Microring Resonator Using Bragg Grating}, abstract ={Nowadays, ultra-compact optical integrated circuits with wide bandwidth play an essential role in ultra-fast optical signals processing. In this paper, design, analysis, and engineering of the spectral characteristics for a silicon all-pass microring resonator based-on Bragg grating have been presented. The obtained results from the three-dimensional FDTD method in the frequency domain show that by changing the geometrical parameters of the Bragg grating, the 3 dB bandwidth of the microring resonator based-on Bragg grating has been increased by 29% compared to the conventional microring resonator at the resonance wavelength close to 1550 nm.}, Keywords = {Signal processing, Silicon photonics, Bragg grating, Microring resonator}, volume = {28}, Number = {2}, pages = {861-864}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2566-en.html}, eprint = {http://opsi.ir/article-1-2566-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {BashiriGodarzi, Farzad and Riahi, Ali and Moradi, Hame}, title = {Experimental study of the effect of polymeric material on Fabry-Perot based gas pressure ternary sensor}, abstract ={In this paper, two fabry-perot point optical fiber sensor are introduced to investigate the pressure of oxygen and nitrogen gas in the pressure range of 10 to 50 mbar. Fabry-Perot sensor probes are made with air cavity and with fixed lengths of 0.1 mm and suitable diaphragm with fixed thicknesses of 300 μm is layered on the optical fiber. Polyurethane (PU) and rigid polymer (Rigid PVC) materials were used for the sensor address layer and a sensor arrangement for measuring gas pressure was set up in the laboratory. The effect of polymer material as an important parameter on the sensitivity of gas pressure sensor was investigated. The results show that the sensor made with Rigid PVC coating is more sensitive than the sensor made with PU coating for both gases.}, Keywords = {Optical fiber, Optical fiber sensor, Fabry-Perot optical fiber sensor, Gas pressure, Polymer materials}, volume = {28}, Number = {2}, pages = {865-868}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2635-en.html}, eprint = {http://opsi.ir/article-1-2635-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {mohammadrahimzadeh, mehdi and bazouband, Fatemeh}, title = {Increasing the Bandwidth of CROW Raman Amplifier}, abstract ={In this study the combination of coupled micro-ring resonators named as CROW is investigated as Raman amplifier. Utilizing the ring resonators in the integrated optical circuits are the appropriate candidates for signal amplification. Because the self-feedback of light inside the rings leads to field enhancement and appearing the nonlinear effects like Raman effect and the desired signal can be amplified by accompanying the appropriate pump. In this paper increasing the bandwidth of amplification by Raman effect is desired. The effect of number of rings and coupling coefficients between them on increasing the amplified bandwidth are explored. The governing equations of fields are written by Matrix method. The frequency spectrum of output channel is studied by Mathematica software to investigate the signal amplification.}, Keywords = {Raman amplifier, micro-ring resonators, coupling coefficients}, volume = {28}, Number = {2}, pages = {869-872}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2636-en.html}, eprint = {http://opsi.ir/article-1-2636-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Bayat, mahdis and RezvaniJalal, Masoud and pishdast, Masoud and Abdikian, Alirez}, title = {Computational Study of Electrostriction Sound Wave Generated in Transmission of TEM01 Laser through an Optical Fiber}, abstract ={In this paper, numerical computation of sound wave generation by electrostriction mechanism in propagation of a laser pulse within an optical fiber is considered. To accomplish the study, the hydrodynamic wave equation is used. It is assumed that, the initial density perturbation is proportional to the second power of the electric field. In order to observe the two-dimensional propagation of the sound, TEM01 laser mode is incorporated. By numerical solving of the equation, resonant sound frequencies of the fiber and related eigen-functions are obtained. Using the expansion theorem, the transverse propagation of the sound is simulated by a mathematica code. Acoustic echoes in different points are observed with different temporal structure.}, Keywords = {Electrostriction sound, Hydrodynamic wave equation, Simulation, TEM01 laser mode}, volume = {28}, Number = {2}, pages = {873-876}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2672-en.html}, eprint = {http://opsi.ir/article-1-2672-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Heidaryzefreh, hossein and Talebi, Razieh}, title = {Simulation and fabrication of directional coupler by direct laser lithography method}, abstract ={In this paper, the fabrication of directional coupler based on SU-8 polymer material is investigated. In order to find the optimal parameters of directional coupler, Optiwave software, which is simulation software, is used. Direct laser mapping lithography method is used to fabricate directional coupler. The directional coupler consists of two identical waveguides, which are close to each other. Energy can be transferred between two waveguides due to the coupling of evanescent fields, which are propagating in each waveguide. In this paper, the light coupling between two waveguides is also studied. The directional coupler is used as optical filters, intensity modulators and optical switches}, Keywords = {directional coupler, light coupling, lithography, SU-8 polymer material, Direct write laser .}, volume = {28}, Number = {2}, pages = {877-880}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2741-en.html}, eprint = {http://opsi.ir/article-1-2741-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {sakha, fereshteh and yeganeh, mohammad and rasuli, saifollah}, title = {Phase extraction of quasi parallel interference fringes, single fringe and closed fringes using one-dimensional continuous wavelet transform and Hilbert transform}, abstract ={Abstract- Phase extraction is performed from interference patterns by different methods. Conventional methods such as Fourier and phase-shifting methods cannot be used on a single interference pattern having a small number of fringes without the use of modulation with a carrier spatial frequency. In this paper, the phase of quasi-parallel simulated interference fringes having a large number of fringes, a single fringe, and closed fringes, using the one-dimensional continuous wavelet method and Hilbert transform, is presented. Phase extraction for quasi-parallel fringes, even having a small number of fringes, is easily available with this method.}, Keywords = {Keywords: closed fringe, Hilbert transform, mother wavelet, phase extraction, wavelet.}, volume = {28}, Number = {2}, pages = {881-884}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2627-en.html}, eprint = {http://opsi.ir/article-1-2627-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {vahedi, mohammad and Jafarfard, Mohammad rez}, title = {Refractive index profile characterization for tapered optical fiber Hydrogen gas sensor}, abstract ={Abstract- In this paper، a single-mode tapered optical fiber sample، which is used for hydrogen gas sensing، is imaged using the Hilbert phase microscope method. By processing the resulting images in MATLAB software environment، after determining the phase obtained for the fiber، a three-dimensional matrix is created using the fiber phase image. By using the inverse radon transformation on the obtained matrix، the fiber refractive index profile will be accessible.}, Keywords = {Keywords: Radon transformation, Tapered Optical fiber, Fourier slice theorem, Hilbert phase microscopy, Hydrogen Sensor.}, volume = {28}, Number = {2}, pages = {885-888}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2592-en.html}, eprint = {http://opsi.ir/article-1-2592-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Radmard, Saeid and Moshaii, Ahmad and Abazari, Mohamm}, title = {Resonator Design for High Average Power Cavity-Dumped Thin-Disk-Laser}, abstract ={In this paper, the dependency of dioptric power of the active medium on pumping power is measured. Based on the measured data two different configurations for the laser resonator of a cavity-domed thin disk laser were designed, optimized and reported; V-shape and I-shape. In the design procedure considerations of an industrial laser resonator are assumed. Results of the designed resonators in miss-alignment sensitivity and M2 factor compared and discussed.}, Keywords = {Cavity-dumping, Laser resonator, Thermal lensing, Thin-disk laser,}, volume = {28}, Number = {2}, pages = {890-893}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2589-en.html}, eprint = {http://opsi.ir/article-1-2589-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {ghazanfar, mohsen and Behroodi, Ebrahim and Latifi, Hami}, title = {Design and Fabrication of an Auto-Focus System Based on Astigmatism Method for Direct Write Laser Lithography}, abstract ={There are many challenges to build an integrated photonic circuit. One of the challenges of building such circuits is the instant auto-focus of the laser beam on the surface of the photoresist. In this regard an auto-focus system was built and fabricated. This system is based on astigmatism method. This auto-focus system can distinguish surface roughness of the photoresist with resolution of 130 nanometers and operate without the use of any software and as a standalone system with very high speeds while the direct write laser lithography is being done.}, Keywords = {Astigmatism, Auto-Focus, Integrated Photonic Circuit, Photoresist, Standalone}, volume = {28}, Number = {2}, pages = {894-897}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2622-en.html}, eprint = {http://opsi.ir/article-1-2622-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Radmard, Saeid and Pasandideh, Kaveh and Moshaii, Ahm}, title = {High Average Power Q-Switched Thin-Disk Laser}, abstract ={Design and fabrication of a high-average power Q-switched Yb:YAG thin-disk laser with average power of about 300W is presented. Modulation of the resonator loss is done using an acousto-optic cell. The dependency of the output pulse energy and average power on the pump power as well as the repetition rate was investigated. The values of these parameters are chosen in a range that the laser produces stable pulses. It was shown that the energy of the output pulses at enough high repetition rate and high pump power is less dependent on these parameters. The laser is stably operated in the repetition rate range of 0.5 to 10 kHz, with pulse width of about 1 microsecond. The maximum output pulse energy was 57 mJ which measured at the repetition rate of 1 kHz. To the best of our knowledge, it is the highest average power that has been reported in Q-switched thin-disk lasers.}, Keywords = {High average power, Q-Switching, Thin disk laser.}, volume = {28}, Number = {2}, pages = {898-901}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2591-en.html}, eprint = {http://opsi.ir/article-1-2591-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Aghbolaghi, Reza and Sahebghoran, Habib and Fallahi, Vahi}, title = {Annular Output Beam in Axicon-Based V-Shape Resonator}, abstract ={In this paper, an annular output beam generation has been simulated by utilizing an axicon in the V-shape thin-disk laser resonator. In addition, the predominant mode of the resonator has been extracted by employing Collins integral in the Fox-Li iteration method. The results show that the radius of curvatures of the thin-disk and output coupler mirror,  and distance between thin disk till output coupler mirror (OCM) play a significant role in producing of annular-shape beams.}, Keywords = {Conical lens, Annular Bessel beams, Thin-disk lasers, V-shape resonator.}, volume = {28}, Number = {2}, pages = {902-905}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2593-en.html}, eprint = {http://opsi.ir/article-1-2593-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Ebadian, Hassan and sheikhi, Omid and mardiha, mehd and maleki, abbas and Shahmohammdi, jav}, title = {Design and fabrication of variable reflection mirrors for pulsed solid-state lasers}, abstract ={In this research, based on Nd: YAG pulsed solid state laser at 1064 nm, variable reflectivity laser mirrors(VRM)  with Gaussian order n=2 with reflection of 15% and n=5 with reflection of 20% have been designed and manufactured. Comparison of experimental and theoretical results, indicates the accurate implementation of coating and adjustment of design parameters. These mirrors were installed in a Q-switched resonator arrangement and tested at a repetition rate of 10Hz at 100mJ/pulse with a pulse width of 12ns. Microscopic examinations show the absence of destructive effects on the coated surfaces.}, Keywords = {Variable Reflectivity Mirrors, laser resonator, Optical coating, Q-switched.}, volume = {28}, Number = {2}, pages = {906-909}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2662-en.html}, eprint = {http://opsi.ir/article-1-2662-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Pezh, Alireza and Kazemi, Babak and Maleki, Abbas}, title = {Design and fabrication of flashlamp power supply with square pulse operation for solid state lasers}, abstract ={In this paper flashlamp power supplies with square pulse operation are proposed for solid state lasers. Here, a 65 J and 10 Hz power supply for a 1 J Nd:YAG laser was demonstrated. The experimental results show the lamp impedance is transferred to a linear region and then an approximately current flows in the lamp. Moreover, the electrical energy is released in the flashlamp as a linearly form with time.}, Keywords = {square pulse, flash lamp, solid state lasers}, volume = {28}, Number = {2}, pages = {910-913}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2604-en.html}, eprint = {http://opsi.ir/article-1-2604-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Pezh, Alireza and BabaiyTooski, Majid and Maleki, Abbas and Ebadian, Hass}, title = {Design and fabrication of the third and fourth-harmonics of pulsed Nd:YAG laser}, abstract ={In this paper, a third and fourth harmonic generation scheme is proposed for pulsed Nd:YAG laser. Type II phase-matching DKDP and type I phase-matching KDP were used to generate 355 and 266 nm output wavelengths, respectively. With a 1.1 J Q-switched Nd:YAG laser and a type II phase-matching KTP used for frequency doubling, the maximum 220 mJ energy of 355 nm and the highest 65 mJ energy of 266 nm was obtained. The energy conversion efficiency for the third and fourth harmonics was 20 and 9%, respectively.}, Keywords = {harmonic generation, phase-matching, Nd:YAG laser}, volume = {28}, Number = {2}, pages = {914-917}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2612-en.html}, eprint = {http://opsi.ir/article-1-2612-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Farahbod, Amir Hossein and ZahediDezaji, Seyyed Morteza and mahmoudi, mohamm}, title = {Experimental Study of Mode Profile Behavior of LED-Pumped Solid-State Lasers with Improved Optical Pumping System}, abstract ={In this paper, the experimental findings where have been obtained by applying an optimized pumping system and arrays of white spectrum light-emitting diodes to pump Nd+3 doped 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 a total of 35 light-emitting diodes. The laser performance of the later pumping structure was compared for solid-state active medium such as Ce:Nd:YAG, Nd:YAG, and Nd:YLF, with equal optical losses, under laser relaxation oscillations. In addition, the dependence of mode structure of the laser oscillator with a different active medium in the white spectrum region has been studied experimentally.}, Keywords = {Optical pumping system, LED-pumped laser, Nd3+ Doped active medium, Ince-Gaussian mode}, volume = {28}, Number = {2}, pages = {918-921}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2608-en.html}, eprint = {http://opsi.ir/article-1-2608-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {torabi, Reza and Silakhori, kaveh and SalmaniNejhad, hami}, title = {Comparative study of spark pin-array and PCB surface plasma pre-ionization systems for TEA CO2 laser Performance}, abstract ={The performance of a homemade transversely excited atmospheric CO2 laser, capable to be alternatively run using UV spark pin-array (SPA) and PCB surface plasma pre-ionization systems, is comparatively studied. The performance of both types of pre-ionization in different working conditions was experimentally investigated and the output energies were compared with each other as well as the simulation results based on the six-temperature vibrational-rotational model. It has been found that the SPA system provides better discharge stability and uniformity with higher output energies, while using the PCB surface plasma configuration allowed the laser to operate with higher gas lifetime and lowered the need for helium in its gas mixture.}, Keywords = {TEA CO2 laser, pin-array pre-ionization, PCB surface plasma pre-ionization}, volume = {28}, Number = {2}, pages = {922-925}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2728-en.html}, eprint = {http://opsi.ir/article-1-2728-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {torabi, Reza and Silakhori, kaveh}, title = {Generalization of the 6-Temperature Model for Simulation of Super-Atmospheric Pulsed CO2 lasers Output}, abstract ={The output characteristics of a home-made 1-3 atm pulsed CO2 laser are simulated by using Six-Temperature Vibrational-Rotational Dynamic Model (6TVRM). The discharge volume was modeled by a non-linear distributed lumped electric circuit and the electron density was calculated by Transmission Line Method. Different characteristics of the laser pulses such as energy, build-up time and duration of the spike and tail parts were measured at various operational conditions of the pressure, discharge voltage and main capacitance. Then, the obtained data were compared with the simulation results calculated for the corresponding conditions. The good agreement observed between the experimental and simulation results has revealed the promising capability of 6TVRM to be generalized for describing the output behavior of the supper-atmospheric pulsed CO2 lasers.}, Keywords = {Six-Temperature Vibrational-Rotational Dynamic Model, 6TVRM, High Pressure CO2 Laser}, volume = {28}, Number = {2}, pages = {927-930}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2727-en.html}, eprint = {http://opsi.ir/article-1-2727-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Hamede, Sommer and Maleki, Abbas and NajafiVadod, yaser and Babaiy, Majid and Ebadian, Hass}, title = {Design and Simulation of pulsed Nd:YAG laser based on Master Oscillator Power Amplifier (MOPA) structure}, abstract ={Abstract- In this paper design of a high-power pulsed Nd:YAG laser in oscillator-amplifier structure by diode pumping method has been presented. In this paper, an oscillator stage with an output energy of 300 mJ with a pulse width of 13 nanoseconds is used as the main source and three stages of single-pass amplifier, which finally produces 3 joules of energy at a wavelength of 1064 nm. The total gain coefficient in the amplifier stages is 10 and the optical to optical efficiency is obtained in the whole 30% laser system.}, Keywords = {Keywords:Oscillator,Amplifier, gain coefficient, saturation energy}, volume = {28}, Number = {2}, pages = {931-934}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2738-en.html}, eprint = {http://opsi.ir/article-1-2738-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {masaeli, mahdi and Arabanian, Atoosa Sadat and Massudi, rez}, title = {Comparison of the intracavity and extra cavity of second harmonic generation in a nanosecond pulsed Nd:YAG laser with a repetition rate of the order of KHz}, abstract ={ An effective method to produce a laser beam in the visible region is second harmonic generation (SHG) from a laser beam in the infrared spectrum using nonlinear crystals. In this paper, an arrangement for the high-efficiency production of a nanosecond pulsed green laser is presented by intracavity second harmonic generation of a longitudinally pumped Nd:YAG laser. For this purpose, a L-shaped cavity is designed in such a way that the created thermal lens in the active medium due to laser pomp well compensated and the stability of the cavity is in established a range of 1 to 20 watts. Then, output power of SHG in this arrangement is compared with that of extra cavity SHG. Both simulation and experimental results illustrate a 30-fold. increase of the output green power of the arrangement with the intracavity second harmonic generation  compared to the extra cavity.}, Keywords = {cavity stability, intracavity second harmonic generation, longitudinally pump, thermal lens}, volume = {28}, Number = {2}, pages = {935-938}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2558-en.html}, eprint = {http://opsi.ir/article-1-2558-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {dashti, Mohse}, title = {Design and fabrication of an operational system for the atmospheric turbulence measurements based on moiré deflectometery}, abstract ={In recent years, experimental setups based on moiré deflectometry have been introduced to measure the atmospheric turbulence parameters.  The advantages of this method are its simplicity and cheapness. In this paper, a device based on this method is introduced to measure the Fried parameter r0 and the refractive index structure constant,Cn2 . These parameters are a measure of the intensity of atmospheric turbulence. A program written in MATLAB software in the form of a GUI makes it easier for different people to work with it.}, Keywords = {Deflectometry, Moiré, Turbulence}, volume = {28}, Number = {2}, pages = {939-942}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2626-en.html}, eprint = {http://opsi.ir/article-1-2626-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {farhadyan, Amir Hossein and DehghanBaghi, Mahdi}, title = {Mid Infrared Solid State Lasers: Importance, Application and Numerical Simulation}, abstract ={Mid infrared solid state lasers including Fe:ZnS(e), Cr:ZnS(e) and Er:YAG were introduced. Fe:ZnS(e) and Cr:ZnS(e) lasers can be widely used in the defense industry as new and important laser sources that also have good tuning capability. According to the introduced setup, Er:YAG laser was analyzed and numerically simulated as the main pump source. For pumping of Fe:ZnSe laser, we need to 250 mJ of free-running 3 micron laser, which according to calculations, pump and laser rod properties obtained.}, Keywords = {Chalcogenide lasers, Fe:ZnS(e), Cr:ZnS(e), Er:YAG, Rate equations}, volume = {28}, Number = {2}, pages = {944-947}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2693-en.html}, eprint = {http://opsi.ir/article-1-2693-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {mansouri, masoome and ghalambordezfuli, abdol mohham}, title = {Different stacking characterization of twisted bilayer MoS2, using moire patterns}, abstract ={Abstract- In this article, twisted bilayer MoS2 has been simulated. The results showed that the changes in moire patterns in terms of rotation angle can be considered as an indicator for determining the structural properties such as stacking factor ae well as band gap}, Keywords = {Keywords: moire patterns, heterostructures, vanderwaals.}, volume = {28}, Number = {2}, pages = {950-953}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2598-en.html}, eprint = {http://opsi.ir/article-1-2598-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Asakereh, Mahin and GhalamborDezfuli, Abdolmohamm}, title = {Investigation of the effect of silver nanoparticles on the photocatalytic properties of titanium dioxide for removing environmental pollutants with natural light source}, abstract ={With the expansion of industry and technology and the increase of modern urban life as well as more consumption of urban communities, today it is very important to pay attention to environmental pollutants, especially water resources. One of the most common pollutants in water resources is the industrial paints. In this paper, the rate of removal of water-soluble contaminants (methylene blue) by photocatalytic properties of titanium dioxide (TiO2) nanoparticles and the effect of adding silver nanoparticles (Ag) to TiO2 are investigated. Experimental studies in the natural conditions (sunlight and open-air) have been performed and the effects of sunlight exposure time, different amounts of photocatalyst, and pollutant concentrations have been investigated. The results show that the addition of silver nanoparticles to the TiO2 nanoparticles will significantly increase the amount of contaminant removal (methylene blue). it is predicted that the increase in the removal of aquatic pollution can be attributed to the high plasmonic properties and the strong interaction of the electromagnetic wave with plasmonic properties of silver nanoparticles, as well as shift in the spectral absorption region of the TiO2 / Ag compound from UV to the visible region.}, Keywords = {pollutant, Titanium dioxide, Photocatalyst, Silver, visible light}, volume = {28}, Number = {2}, pages = {954-957}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2575-en.html}, eprint = {http://opsi.ir/article-1-2575-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {ShananHayavi, Sedighe and GhalamborDezfuli, Abdolmohamm}, title = {Investigation the effect of nanoparticle size and grating periodicity on SERS signal amplification in optical nanobiosensors}, abstract ={  In this paper, we investigate the sensitivity of optical nanobiosensors with respect to the changes of the background’s optical properties. For this purpose, a nanobiosensor designed and modeled and the effects of changing the grating periodicity and nanoparticle size on enhancing its sensitivity have been investigated. The results show that the sensitivity of optical nanobiosensors to the changes in the background’s optical properties is of the order of 0.01nm / RIU. Also, the change in the size of nanoparticle as well as the change in the grating periodicity shows a red frequency shift.  }, Keywords = {size of nanoparticle, grating periodicity, nanobiosensors}, volume = {28}, Number = {2}, pages = {958-961}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2603-en.html}, eprint = {http://opsi.ir/article-1-2603-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Siadati, Seyed Mahdi and DadkhahTehrani, alireza and Mousavy, Seyedeh Soraya and Salmanishik, Somaieh and MajlesAra, Mohammad Hossi}, title = {Growth and investigation of optical properties of ZnO: Ni, ZnO:Ni@GQDs nanostructures}, abstract ={Abstract - In this study, pure zinc oxide nanoparticles and nickel-doped zinc oxide nanoparticles were prepared by sol-gel method and graphene quantum dots were prepared by pyrolysis method. Core-Shell structure, ZnO (pure and with nickel impurity)-graphene quantum dots was synthesized. The optical properties of these nanoparticles were studied by photoluminescence spectroscopy. According to the results, the contamination of zinc oxide with nickel element leads to a decrease in the peak intensity of ZnO emissions, but with the addition of quantum dots graphene, the intensity of emission peak increases. In the morphology study, the shape of the synthesized particles was investigated by scanning electron microscopy.}, Keywords = {ZnO, Nickel doped ZnO, Core-shell structure, Graphene quantum dots, Photoluminescence}, volume = {28}, Number = {2}, pages = {962-965}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2523-en.html}, eprint = {http://opsi.ir/article-1-2523-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {DehghanGhahfarokhi, Sima and Farahmandzadeh, Farzad and Molaei, Mehdi and Alehdaghi, Hassan and Karimipour, Masou}, title = {Investigation effect of gamma radiation on the optical and structural properties of CdTe / CdSe / CdS core/shell/shell QDs}, abstract ={ In this research CdTe/CdSe/CdS core/shell/shell QDs were synthesized by a novel and simple photochemical approach. Thioglycolic acid (TGA) was used as simultaneously as both of the capping agent molecule and S2- source for CdS shell growth around CdTe/CdSe QDs. XRD results confirmed successful formation of CdTe/CdSe/CdS core/shell/shell structure. Effect of  60Co gamma irradiation on optical and structural properties of CdTe and CdTe/CdSe/CdS core/shell/shell QDs was investigated. source for CdS shell growth around CdTe/CdSe QDs. The obtained results indicated stability of crystalline structure of QDs after gamma irradiation but PL intensity of the CdTe/CdSe/CdS QDs was decreased gradually after receiving different doses of gamma irradiation with a red shift in PL peak position.  }, Keywords = {CdTe/CdSe/CdS, QDs, Gamma irradiation, Dosimetry, luminescence}, volume = {28}, Number = {2}, pages = {966-969}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2619-en.html}, eprint = {http://opsi.ir/article-1-2619-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Zaheri, Leila and Jafari, akbar}, title = {Investigation of linear and nonlinear optical properties of copper oxide nanoparticles produced by laser ablation method}, abstract ={In this paper, copper oxide nanoparticles have been synthesized by laser ablation method with the second harmonic of Nd-YAG laser at 532 nm wavelength with a pulse width of 5 ns on a copper metal target (99.99% purity) in distilled water at two different laser pulse irradiation times. In order to investigate the linear optical properties of UV-VIS and nonlinear copper oxide nanoparticles, we used the Z-Scan method. The results of UV-Visible spectroscopy showed high absorption of nanoparticles. The results of Z-Scan were nonlinear and different refractive index values for production times of 9 and 15 minutes.}, Keywords = {Linear and Nonlinear optical properties, laser Ablation, CuO Nanoparticles, Z-Scan Method, Size of Nanoparticles}, volume = {28}, Number = {2}, pages = {970-973}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2668-en.html}, eprint = {http://opsi.ir/article-1-2668-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {cheraghchi, Roghayeh and RezvaniJalal, Masoud and Pishdast, Masoud and Abdikian, Alirez}, title = {Simulation of the Effect of Ion Drift Motion on the Shape of the Nano-Particles of Laser Ablation in Liquid}, abstract ={In this paper the growth of nano-particles in laser ablation within a liquid by Orbital Motion Limited mechanism (OML) is simulated. It is assumed that the expanding plasma of the ablation has a supersonic speed up to 8000 m/s. Calculation results show that such a drift motion will cause the nano-particles to lose their symmetric spherical shapes and get a pine-like shape. It is concluded that if the growth of nano-particles obeys the electrical charging theorem then the shape of the produced nano-particles in real experiments should not be spherical but must be pine-like instead. As such thing has not been seen in the synthesized nano-particles from the experimental liquid-phase ablation; it seems that the OML theorem for nono-particle growth is rather doubted.}, Keywords = {Ion drifts motion, Laser ablation in liquid, Pine-like nano-particles}, volume = {28}, Number = {2}, pages = {974-977}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2647-en.html}, eprint = {http://opsi.ir/article-1-2647-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {shirin, simin and madani, amir and RoshanEntezar, Sam}, title = {Study of Pockels effect on the optical filters in chiral materials doped with metal nanoparticles}, abstract ={In this paper, the propagation of electromagnetic waves from a one-dimensional photonic crystal containing pseudo-isotropic nanocomposite structurally chiral materials in the absence and also in the presence of a low-frequency electric field is investigated. In the absence of applied voltage and metal nanoparticles, a photonic bandgap independent of circular polarization is created in the transmission spectra. In the presence of applied voltage, this photonic bandgap converted to a photonic bandgap sensitive to circular polarization. Also, it is shown that the applied voltage increases the width of this bandgap. In addition, it is observed that the applied voltage can even open a new photonic bandgap which is independent of the polarization when such a bandgap is not there in the absence of the low-frequency electric field. Also, due to the presence of metallic nanoparticles, this structure shows a new bandgap independent of polarization and voltage. Also, the effect of the material of metal nanoparticles on the transmission spectra of this structure is considered.}, Keywords = {Pockels effect, pseudo-isotropic, optical filters, structurally chiral, nanocomposite.}, volume = {28}, Number = {2}, pages = {978-981}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2633-en.html}, eprint = {http://opsi.ir/article-1-2633-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {asgari, davood and amjadi, Neda and malekfar, rasoul}, title = {Investigation and simulation of field enhancement in titanium nitride (TiN) -zinc oxide (ZnO) core-shell nanoparticles}, abstract ={- In this study, first the cross-sectional area of the adsorption using Mie theory for titanium nitride with a radius of 30 nm, zinc oxide shell with a thickness of 5 nm and the core-shell (titanium nitride-zinc oxide) were calculated. The results show that the nanostructure of the core-shell has better adsorption than the single particle state of titanium nitride and its adsorption has three resonance peaks. Then, the field enhancement for all three samples were calculated. The results show that the amount of field enhancement in the core-shell nanoparticles is less than that of pure titanium nitride nanoparticles. Then, for the wavelength of 532 nm, the shell radius was varied and it was observed that with increasing the shell radius, the amount of field enhancement starts to decrease.}, Keywords = {Core-shell nanoparticles, localized Surface Plasmon Resonance (LSPR), titanium nitride, zinc oxide, field enhancement,}, volume = {28}, Number = {2}, pages = {982-985}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2718-en.html}, eprint = {http://opsi.ir/article-1-2718-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {ahmadinejad, Ehsan and mahdieh, Mohammad Hossei}, title = {Laser-Induced Synthesis of Ag-Au Alloy Nanoparticles and the Effect of External Electric Fields on the Alloying Process}, abstract ={This paper discusses the results of synthesizing Ag-Au alloy nanoparticles (NPs) using a nanosecond pulsed laser. In this study, the colloidal Ag and Au NPs were separately prepared by nanosecond pulsed laser ablation in distilled water. An appropriate mixed sample of these colloidal NPs was post-irradiated under a uniform external electric field (EEF), resulting in Ag-Au alloy formation.  The synthesized colloidal alloy NPs were characterized using scanning electron microscopy (SEM) and UV-vis absorption spectroscopy. The results indicated that the EEF could significantly reduce the Ag-Au alloy formation time.  The results also showed that the localized surface plasmon resonance wavelength of the NPs synthesized under a uniform external electric field was less than those NPs produced apart from the field.}, Keywords = {Laser ablation, Ag-Au alloy nanoparticles, Surface plasmon, electric field.}, volume = {28}, Number = {2}, pages = {986-989}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2724-en.html}, eprint = {http://opsi.ir/article-1-2724-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {bonjakhi, mohsen and Mahdieh, Mohammad Hossei}, title = {Fabrication of silver nanoparticle films by pulsed laser deposition in flowless open air and studying the effect of distance between target and substrate}, abstract ={In the present work, pulsed laser deposition (PLD) of silver in open air is used to fabricate Ag nanoparticle (NP) films on the substrate without using flowing gas. The target was ablated by trains of nanosecond pulsed Nd:YAG laser beam. The deposited NP films on the substrate were characterized using energy dispersive x-ray spectrophotometry (EDS), high resolution transmission electron microscopy (HRTEM), and UV/Vis absorption spectroscopy. Surface plasmon resonance (SPR) characteristics of NPs were extracted from the data of UV/Vis spectrum. The effect of distance between target and substrate on absorption spectrum of NP film was investigated. The results show that it can significantly change the peak and bandwidth of absorption spectrum.}, Keywords = {Ag NP film, Pulsed laser deposition in flowless open air, Surface plasmon resonance, UV/Vis absorption spectrum.}, volume = {28}, Number = {2}, pages = {990-993}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2669-en.html}, eprint = {http://opsi.ir/article-1-2669-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {alizadeh, Ali and Rajabi, Yasser and BagheriMohagheghi, Mohammad Mehdi}, title = {The effects of initial laser intensity on the nonlinear optical properties of the ITO thin films}, abstract ={In this paper, Indium-Tin Oxide (ITO) thin films were deposited by spray pyrolysis. Then, optical and structural properties of thin films were studied by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) images, and UV-Vis spectroscopy. Also, nonlinear optical parameters (such as nonlinear refractive index and nonlinear absorption coefficient) were determined. The samples were placed in the Z-Scan setup. In this paper is used of four initial intensities, 2.7×109 W/m2, 0.938×109 W/m2, 0.28×109 W/m2 and 0.098×109 W/m2. The results showed that the nonlinear optical properties of ITO were changed with initial laser intensity.  }, Keywords = {Indium Thin Oxide (ITO), Nonlinear optics, Nonlinear refractive index, Nonlinear absorption coefficient, Laser intensity.}, volume = {28}, Number = {2}, pages = {994-997}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2753-en.html}, eprint = {http://opsi.ir/article-1-2753-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {keshavarz, Alireza and Jamalzadeh, Maryam}, title = {Increasing Optical Absorption With an Array of Nanoparticles on a Dielectric-Metal Substrate in The Infrared Region}, abstract ={  Nowadays, metal nanoparticles have been considered due to their desirable optical properties, and several methods have been developed for their fabrication and use in various devices. Surface plasmons are mass fluctuations of electrons in metals that can be excited by electromagnetic waves, which are a major component in routing and determining optical properties at the nanometer scale. In this study, the optical properties of a multilayer structure consisting of an array of nanoparticles located on a dielectric substrate are also factors affecting the increase of optical absorption. The optical properties of nanoparticles depend on the material, shape, size and dielectric environment, and various factors such as nanoparticle diameter, incident radiation angle and distance between nanoparticles affect the absorption improvement that has been investigated.    }, Keywords = {Plasmonic, Optical absorbtion, Nanoparticles.}, volume = {28}, Number = {2}, pages = {998-1001}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2752-en.html}, eprint = {http://opsi.ir/article-1-2752-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Haddad, Mohammad Ali and Zaremehrabadi, farzaneh and HossiniMotlagh, Najmeh Sadat}, title = {Investigation of the effect of pulsed and continuous laser radiation on the temperature changes of graphene oxide nanoparticles}, abstract ={The temperature variations of graphene oxide nanoparticles in an aqueous solution are investigated using 808 nm lasers operating in continuous and pulsed modes. To obtain the optimum temperature of cervical cancer cell death, different concentrations of graphene oxide in water solution were evaluated in irradiation. The results indicate that the temperature increase is proportional to the concentration of nanoparticles, irradiation time, and laser power.}, Keywords = {Cancer, Graphene Oxide, Laser, Nanoparticles, Photothermal therapy}, volume = {28}, Number = {2}, pages = {1002-1006}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2585-en.html}, eprint = {http://opsi.ir/article-1-2585-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {farahmandzadeh, farzad and alehdagi, hass}, title = {Investigating effect of ionizing gamma rays on optical properties of CdTe/ZnSe core/shell quantum dots}, abstract ={In this paper, CdTe/ZnSe core/shell quantum dots synthesized by microwave method. Effect of gamma irradiation on optical properties of CdTe/ZnSe quantum dots were investigated by 60Co in range of 0-20 kGy. The obtained results showed that photoluminescence (PL) intensity of CdTe/ZnSe quantum dots increased after receiving gamma irradiation dose and also observed a red-shift in PL spectrum of CdTe/ZnSe quantum dots. Based on obtained results CdTe/ZnSe quantum dots are good candidate to use in dosimeter applications.}, Keywords = {Keywords: Gamma rays, Dosimeter, Quantum dots, photoluminescence, CdTe/ZnSe}, volume = {28}, Number = {2}, pages = {1006-1009}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2750-en.html}, eprint = {http://opsi.ir/article-1-2750-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Asadian, Zahra and sasanighamsari, mortez}, title = {Glycine effects on the optical properties of colloidal In2O3 nanoparticles}, abstract ={High-quality colloidal In2O3 nanocrystals were synthesized by the sol-gel method. Glycine was used as a surfactant to control the optical properties of the prepared sample. Structural analysis and optical spectroscopy were employed to identify colloidal In2O3 nanocrystals.  The optical properties of the colloidal In2O3 nanocrystals were evaluated using UV visible absorption and photoluminescence spectroscopy which showed that there are two absorption peaks located around 303 and 250 nm. The colloidal In2O3 nanocrystals emitted white light. Fourier transform infrared (FT-IR) spectroscopy was also used to identify the chemical composition of the prepared Sol.  Experimental results have shown that highly stable nanocrystals colloidal nanocrystals have been synthesized with strong white emissions that have sufficient potential for photonic applications such as light-emitting diodes.}, Keywords = {Sol-Gel Method, In2O3, Colloidal Nanoparticles}, volume = {28}, Number = {2}, pages = {1010-1014}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2545-en.html}, eprint = {http://opsi.ir/article-1-2545-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {arghavan, mohammad mahdi and sasanighamsari, morteza and sabouridodaran, amir abbas and gaeeni, mohammad rez}, title = {Preparation and optical characterization of Y6(NO3)3O(OH)8.16H2O colloidal sample doped with Nd+3}, abstract ={Abstract- Today, rare earth elements and their complexes have important applications and for this reason, they have attracted a lot of attention. Among their important applications, they are applied in bioimaging and optoelectronic devices. In this paper, after preparing combination of yttrium-containing clusters with the chemical formula of Y6(NO3)3O(OH)8.16H2O, its optical properties have been investigated using photoluminescence, FTIR, XRD and absorption spectroscopy. The results show the formation of N-H, OH and Y-O bonds, purity and the presence of yttrium and neodymium in the sample.}, Keywords = {Yttrium, Clusters, Rare earth elements}, volume = {28}, Number = {2}, pages = {1014-1017}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2611-en.html}, eprint = {http://opsi.ir/article-1-2611-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Kushki, Ehsan and MirzaeiMohammadabadi, Fatemeh and Ghasedi, Arman and baedi, Havad and RazaghiKashani, Si}, title = {Detection of Stark effect in PVA@TiO2 nanocomposite}, abstract ={Abstract- In this paper TiO2 nanoparticles (TiO2 NPs) were completely embedded in biocompatible and biodegradable poly(vinyl alcohol) (PVA) polymer. The obtained results were exhibited that upon substituting TiO2 NPs in PVA polymeric matrix an electrical dipole moment could be induced onto the surface of TiO2 NPs and it can increase the band gap energy due to the induced Stark effect and subsequent degeneracy of energy levels. This effect was detected by utilizing a simple spectroscopic technique.}, Keywords = {polymeric matrix, poly(vinyl alcohol), Stark effect, TiO2 nanoparticles}, volume = {28}, Number = {2}, pages = {1018-1021}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2663-en.html}, eprint = {http://opsi.ir/article-1-2663-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Taheri, Yosra and Raoufi, Davoo}, title = {Introduce of two innovative geometrical parameters for surface roughness modeling by atomic force microscope (AFM) test results}, abstract ={In the present study, two innovative geometrical parameters have been introduced for modelling and more detailed study of surface roughness in Atomic Force Microscope (AFM) test. These parameters are: the average modulus of surface slope and the modulus of curvature of the peaks-valleys. In order to investigate the applicability of these two parameters, the results obtained from these two parameters were compared with two common parameters obtained from the AFM test results using a case study.}, Keywords = {AFM analysis, Thin layer, Modulus of curvature of the peaks-valleys, Average modulus of surface slope}, volume = {28}, Number = {2}, pages = {1022-1025}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2582-en.html}, eprint = {http://opsi.ir/article-1-2582-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Hosseini, Elahe and Mir, Ali and Farmani, Ali}, title = {Nanostructured black phosphorus sensing platform for label-free detection of Avian Influenza Virus}, abstract ={One of the most important and common respiratory infections is the influenza virus. In this paper, a multilayer black phosphorus-based nanostructure is introduced to identify a variety of influenza viruses. The proposed nanostructure is a grating-shaped structure based on black phosphorus and Al2O3 substrate. To achieve the transmission spectrum of each of these three types of viruses (H9N2, H5N2, H1N1) in the terahertz range, FDTD numerical analysis has been used for this structure. The change in resonance frequency is greater for the H9N2 virus because the real part of its refractive index is relatively larger. Here, too, the rate of change is examined based on the different thicknesses of the H9N2 virus. Also, changes in the refractive index of the environment have been used to calculate important parameters in the sensors, such as sensitivity, FWHM, and figure of merit. As a result, the designed terahertz nanosensor can be used as a highly sensitive biosensor to detect different types of influenza viruses in the terahertz region.}, Keywords = {Black Phosphorus, Nanostructure, Refractive Index, Surface Plasmon, Transmission, Virus detection}, volume = {28}, Number = {2}, pages = {1026-1029}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2758-en.html}, eprint = {http://opsi.ir/article-1-2758-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {gaeeni, Mohammadreza and Bakoei, Ali and sasani, Mortez}, title = {Synthesis and characterization of lithium niobite nanoparticles by sol-gel method}, abstract ={Abstract- LiNbO3 nanoparticles were synthesized by sol-gel method. Structural analysis and optical spectroscopy were used to identify LiNbO3 nanoparticles. To investigate the optical properties of LiNbO3 nanocrystals, UV visible absorption spectroscopy was used which showed that the absorption peak is about 250 nm. Fourier transform infrared (FT-IR) spectroscopy was also used to identify the chemical composition of the prepared Sol. Finally, two luminescence emission peaks were detected, one at 420 (purple) and the other at 485 nm (blue). Experimental results have shown that liNbO3 nanocrystals have been synthesized with strong purple and blue emissions that have sufficient potential for quantum photonic applications such as waveguides.}, Keywords = {Sol-Gel Method, LiNbO3, Nanoparticles.}, volume = {28}, Number = {2}, pages = {1030-1033}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2691-en.html}, eprint = {http://opsi.ir/article-1-2691-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Dirikvand, Tahereh and zadsar, Mahdi and neghabi, mi}, title = {Impeovement of quality factor and reduction of spectral bandwidth of microcavity OLED by Bragg mirrors}, abstract ={In this work, the design and fabrication  of a green microcavity OLED by Al-electrode layer as a  top mirror and a Distributed Bragg Reflector (DBR) bottom mirror in order to enhance quality factor(more than51) with high reflectivity and optimal electrical properties was considered.The experimental results show a substantial enhancement of the electroluminescence (EL) intensity as well as a reduction of the spectral width at a half maximum. Finally, we analysed the parameters that still limit the Q-factor, paving the way for future improvements. The proposed approach can be exploited for the fabrication of novel organic light sources for represents an important step towards the realization of  organic lasers}, Keywords = {Exiton, Organic Light Emitting Diod , Microcavity, Optical properties}, volume = {28}, Number = {2}, pages = {1034-1037}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2733-en.html}, eprint = {http://opsi.ir/article-1-2733-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Aliakbari, Amir and Amiri, Peiman and Salehi, Hamdollah}, title = {Ab-initio study of the optical properties nano-MXene of yttrium carbide (Y2C)}, abstract ={The calculations are mainly performed using the quantum-espresso calculation package and quasi-potential method in density functional theory and local density approximation. The imaginary contribution diagram of the dielectric function follows; The absorption starts from tiny energies, which indicates that Y2C nano-MXene has no energy bandgap and shows the metallic nature. The energy loss spectrum shows that the sharp plasmonic energy peaks for Y2C nano-MXene in the x, y, and z directions are 6.5, 6.73, and 6.75 eV, respectively. Therefore, there is the most energy loss in the mentioned energies, and in higher energies, the energy loss function tends to zero values.}, Keywords = {Density functional theory, Optical properties, Nano-MXene, Energy loss function, Metallic nature.}, volume = {28}, Number = {2}, pages = {1039-1042}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2638-en.html}, eprint = {http://opsi.ir/article-1-2638-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {malmir, maryam}, title = {Study of the Electronic and Optical properties of Graphene modified by Boron}, abstract ={Abstract- In the framework of the density functional theory (DFT) and using the full potential augmented plane wave (FP-LAPW) method, the present study calculates and investigates the electric and structural properties and optical properties with the random phase approximation (RPA) of the pristine graphene and Boron doped graphene. In doped graphene, the Dirac cone will be disappeared. The real part of the dielectric function of the pristine graphene is negative in the energy range of 4.21 eV to 5.02 Ev, and this structure shows a metallic manner, while this part is removed in Boron doped graphene. The intensity and number of picks are different in the absorption, reflection, and loss spectra of the two structures.}, Keywords = {Density functional theory, Electronic properties, Graphene, Optical properties.}, volume = {28}, Number = {2}, pages = {1043-1046}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2623-en.html}, eprint = {http://opsi.ir/article-1-2623-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {ArabJafari, Maliheh Sadat and Bayat, Farzaneh and Jamshidi-Ghaleh, kazem}, title = {Two-step synthesis of PMMA colloidal glasses using free emulsion polymerization method}, abstract ={In this paper, colloidal glasses of polymethyl methacrylate (PMMA) which contain polymeric microspheres with various diameters are synthesized. To do this, first, the monodisperse colloidal particles of PMMA with a diameter of 246 nm were prepared using the suspension polymerization method. Then, they were used as a primary polymer to make colloidal particles consisting of different sizes using the free emulsion polymerization method. The vertical deposition method, which is a method based on the self-assembly of microspheres, was used for the growth of colloidal glasses. Furthermore, the properties of polymeric microspheres were investigated using UV-Vis spectroscopy. Colloidal glasses similar to colloidal crystals can be applied as templates in colloidal lithography.}, Keywords = {Colloidal glasses, Free emulsion polymerization method, Polymeric microspheres, Suspension Polymerization, Vertical deposition method.}, volume = {28}, Number = {2}, pages = {1047-1050}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2722-en.html}, eprint = {http://opsi.ir/article-1-2722-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {jahanisabet, Danial and rostami, mohammad and Vatanpour, Vahi}, title = {The Study of structural, electronic and optical properties of the bulk and monolayer of MoS_2 samples}, abstract ={The MoS2 monolayer was successfully synthesized, and 2H-MoS2 dominant phase formation and exfoliation were confirmed using XRD, FTIR and FESEM analyzes. The peaks observed in the UV-vis spectrum are related to the A and B excitons, and a shift in the absorption peak towards lower energies is detected in the monolayer sample due to quantum confinements. The band structure of the samples is calculated using the density functional theory and it is found that the energy gap changes from the indirect state for the bulk sample to the direct state for the monolayer sample.}, Keywords = {MoS2 monolayer, Optical properties, Band structure, Density functional theory}, volume = {28}, Number = {2}, pages = {1051-1054}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2735-en.html}, eprint = {http://opsi.ir/article-1-2735-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Naranji, Elham and Panahi, Somayeh and aliannezhadi, Maryam}, title = {Effect of excimer laser pulse number On gold-silver thin film}, abstract ={Abstract- In this paper, ArF excimer laser irradiation with a wavelength of 193 nm was used to treat the gold-silver binary thin film samples for the purpose of producing a suitable substrate for surface-enhanced Raman spectroscopy. Experiments were performed with 1, 5 and 10 laser pulses at an energy fluence of 75 mJ/cm2. The results show that the LSPR peaks of the nanostructures produced by 5 laser pulses is sharper and more intense than other samples and the intensity of the rhodamine 6G Raman spectrum with a concentration of 10-5 M in the presence of this substrate increased significantly. Therefore, the sample produced with 5 pulses of the laser is suitable for SERS-based applications.}, Keywords = {Gold-Silver thin film, laser excimer, Localized surface plasmon resonances (LSPR), Surface Enhanced Raman Spectroscopy}, volume = {28}, Number = {2}, pages = {1055-1058}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2683-en.html}, eprint = {http://opsi.ir/article-1-2683-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Javypour, Reza and KhazaeiNezhad, Mahdi}, title = {Metamaterial-based broadband adsorbent containing molybdenum disulfide monolayer via surface plasmon}, abstract ={In order to enhance the broadband absorption of visible light in molybdenum disulfide monolayers, a perfect light absorber with a structure consisting of a relatively simple unit cell has been proposed. Absorption of this absorber is achieved by using FDTD simulations above 90% of the wavelength of 650 to 850 nm.}, Keywords = {broadband light absorption, FDTD, Lumerical package, MoS2 mono layers, surface plasmon}, volume = {28}, Number = {2}, pages = {1059-1062}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2732-en.html}, eprint = {http://opsi.ir/article-1-2732-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {bozorgmanesh, afsaneh and karimimooneuniversityofkashan, paris}, title = {Fabrication of Silver Nanostructures to Investigate Their Effect on Surface Enhanced Raman Spectroscopy of Deltamethrin}, abstract ={Pollution of the environment by chemicals such asherbicides,weed control pesticides,insecticides that pollute water and soil and food sources and are a threat to public health.The aim of the present study was to increase the Raman spectroscopy signal of deltamethrin toxin in which we used the plasmonic property of silver nanostructure to improve the Raman signal. First,silver nanostructure were fabricated by reflux method and after layering on HF etched glass,diffrent concentration of deltamethrin toxin were placed on these plasmonnic substrate.The lowest consntration of deltamethrin was detected.}, Keywords = {Surface enhanced spectroscopy, silver nanostructures, deltamethrin toxin, plasmonic substrate, Raman scattering}, volume = {28}, Number = {2}, pages = {1068-1071}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2534-en.html}, eprint = {http://opsi.ir/article-1-2534-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Shojaeifard, Elham and Aliakbari, Amir}, title = {Numerical study of the sensitivity of a metal-insulated plasmonic nanostructure to the refractive index of the coating material for sensing applications}, abstract ={Plasmonic properties are created by the excitation of surface plasmons by light radiation, which is mostly used in sensing applications. We investigate some of the affecting factors on the sensitivity of these sensors based on localized surface plasmon resonance in this article. The structure discussed in this article includes a substrate of glass, nickel, and gold disk with different thicknesses on them. Studies are in the visible-infrared spectrum range and the results of simulation with the FDTD method show the sensitivity of the structure to the refractive index of the environment, period, and thickness of the metal layer.}, Keywords = {Surface Plasmon, sensor, gold disk, FDTD method}, volume = {28}, Number = {2}, pages = {1072-1075}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2677-en.html}, eprint = {http://opsi.ir/article-1-2677-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {Sadrolhosseini, Amir Reza and Sadrolhosseini, Amir Reza and Hamidi, Seyedeh Mehri and Kazamzad, Mahmood and Sadeghi, Somayeh}, title = {Photoluminescence Enhancement In Polyaniline-Gold Nanocomposite}, abstract ={In this study, the polyaniline-gold nanoparticles were prepared using the laser ablation technique in the chitosan solution. The polyaniline tablet was used as a target to prepare the polyaniline nanoparticles in the chitosan solution. After that, the gold target was immersed in the chitosan- polyaniline solution and the gold nanoparticles were formed in the solution using the laser ablation technique. The UV-vis, Fourier transform infrared spectra, and photoluminescence results confirmed the polyaniline nanoparticles and the gold nanoparticles were formed in the chitosan solution. The photoluminescence spectra show the gold nanoparticles enhanced the photoluminescence property of nanocomposite.   }, Keywords = {laser ablation, polyaniline nanoparticles, gold nanoparticles, chitosan, photoluminescence}, volume = {28}, Number = {2}, pages = {1076-1079}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2618-en.html}, eprint = {http://opsi.ir/article-1-2618-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {esmaeili, Melika and arabanian, Atoosa Sadat and masoodi, Rez}, title = {Investigation of the formation of microbump and microjet structures on the surface of thin metal film irradiated with femtosecond laser pulses and the effect of pulse parameters on these structures}, abstract ={Recently, in material processing science, ultra-short pulsed lasers have received a lot of attention because of their unique properties such as ultra-short pulse duration, high intensity and low energy threshold required for laser processing. Irradiating of the surface of the metal film deposited on the glass substrate by femtosecond laser pulse can lead to the formation of structures in the form of bumps, jets, etc. with dimensions of the order of micrometers on the surface of the metal film. The size and shape of these structures depend on the laser pulse and the metal film parameters. In this paper, the formation of bump-shaped and jet-shaped structures on a gold metal film that has been irradiated by ultra-short pulse is simulated by using two-temperature and elastoplastic models. Then, the effect of incident pulse parameters such as pulse length, pulse energy and fluence and focal diameter on the height of the formed structure is investigated.}, Keywords = {ultra-short laser pulse and metal Interaction, Laser Processing, Elasto-plastic theory, Two-Temperature. Model}, volume = {28}, Number = {2}, pages = {1080-1083}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2686-en.html}, eprint = {http://opsi.ir/article-1-2686-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} } @article{ author = {BorhaniZarandi, Mahmood and Jahanbakhshizade, Naser}, title = {Study on the effect of oleic acid as cosurfactant on the structure and morphology of synthesized NiO nanoparticles}, abstract ={-In this study we synthesized a static suspension of NiO nanoparticles which can be used in flexible perovskite solar cells. In one sample we used oleylamine as surfactant and in another sample oleic acid used as cosurfactant. The phase and morphology of samples studied by X-Ray diffraction (XRD) and scanning electron microscopy (SEM). XRD results indicate formation of NiO nanoparticles in two samples .Analysis shows  usage of oleic acid reduced nanoparticles size.  }, Keywords = {: Nanoparticle, Nickel Oxide, Surfactant}, volume = {28}, Number = {2}, pages = {1083-1086}, publisher = {انجمن اپتیک و فوتونیک ایران}, url = {http://opsi.ir/article-1-2748-en.html}, eprint = {http://opsi.ir/article-1-2748-en.pdf}, journal = {Optics and Photonics Society of Iran}, issn = {1126-3278}, eissn = {10}, year = {2022} }