[Home ] [Archive]   [ فارسی ]  
:: Volume 20 - ::
ICOP & ICPET 2014, 20 - : 937-940 Back to browse issues page
Anisotropy Effect on the Nonlinear Optical Refractive Index Changes of a Three-Dimensional Quantum Dot Confined at the Center of a Cylindrical Nano-wire
Ghasem Safarpour Dr. * 1, Hosein Ganjipour Mr.
Abstract:   (2208 Views)
The effect of geometrical anisotropy is numerically investigated on the linear and nonlinear optical refractive index changes of a GaAs quantum dot which is located at the center of a Ga1-xAlxAs cylindrical nano-wire. The finite difference approximation has been used for obtaining energy eigenvalues and corresponding wave functions. Also, the compact density matrix formalism is applied to investigate linear, third order nonlinear and total optical refractive index (RI) changes. The optical properties are calculated as a function of the incident photon energy for different ellipsoid aspect ratio and dot radius. The results clearly reveal that the dot anisotropy plays an important role in determining the magnitude of nonlinear RI changes which enable us to adjust saturation condition. We also found that the dot anisotropy shifts optical spectrum towards both lower and higher energies which depend on the shape of dot (spherical, prolate or oblate quantum dot) and dot radius.
Keywords: Nonlinear refractive index changes, Anisotropic quantum dot, Nano-wire.
Full-Text [PDF 410 kb]   (579 Downloads)    
Type of Study: Research | Subject: Special
Send email to the article author

Add your comments about this article
Your username or Email:

CAPTCHA code


XML   Persian Abstract   Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Safarpour G, Ganjipour H. Anisotropy Effect on the Nonlinear Optical Refractive Index Changes of a Three-Dimensional Quantum Dot Confined at the Center of a Cylindrical Nano-wire. ICOP & ICPET. 2014; 20 :937-940
URL: http://opsi.ir/article-1-379-en.html


Volume 20 - Back to browse issues page
انجمن اپتیک و فوتونیک ایران Optics and Photonics Society of Iran
Persian site map - English site map - Created in 0.06 seconds with 30 queries by YEKTAWEB 3781