Investigation of quadratic electro-optic effects and electro-absorption process in GaN/AlGaN spherical quantum dot

Title
Investigation of quadratic electro-optic effects and electro-absorption process in GaN/AlGaN spherical quantum dot
Author(s)
주상우Mohammad Kouhi[Mohammad Kouhi]Ali Vahedi[Ali Vahedi]Abolfazl Akbarzadeh[Abolfazl Akbarzadeh]요네스피로즈살라리
Keywords
CORE-SHELL NANODOTS; INFRARED PHOTODETECTORS; DIELECTRIC CONFINEMENT; IMPURITY STATES; WELL; SUSCEPTIBILITY; CDSE/ZNS
Issue Date
201403
Publisher
SPRINGER
Citation
NANOSCALE RESEARCH LETTERS, v.9
Abstract
Quadratic electro-optic effects (QEOEs) and electro-absorption (EA) process in a GaN/AlGaN spherical quantum dot are theoretically investigated. It is found that the magnitude and resonant position of third-order nonlinear optical susceptibility depend on the nanostructure size and aluminum mole fraction. With increase of the well width and barrier potential, quadratic electro-optic effect and electro-absorption process nonlinear susceptibilities are decreased and blueshifted. The results show that the DC Kerr effect in this case is much larger than that in the bulk case. Finally, it is observed that QEOEs and EA susceptibilities decrease and broaden with the decrease of relaxation time.
URI
http://hdl.handle.net/YU.REPOSITORY/32797http://dx.doi.org/10.1186/1556-276X-9-131
ISSN
1556-276X
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공과대학 > 기계공학부 > Articles
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