有限方阱势下一维GaxAl1-xAs/GaAs/GaxAl1-xAs量子点非线性光学性质的约束Stark效应、静水压力和温度研究

IF 0.8 Q4 NANOSCIENCE & NANOTECHNOLOGY
R. Chaurasiya, S. Dahiya, R. Sharma
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引用次数: 0

摘要

本文利用COMSOL multiphysics和Matlab等仿真软件,在电场、静水压力和温度存在的情况下,研究了有限平方阱电位下一维Ga x Al 1−x As/GaAs/Ga x Al 1−x As量子点的非线性光整流、吸收系数和折射率。结果表明:电场增大时,光整流系数谐振峰呈现蓝移,静水压力和温度增大时,谐振峰呈现红移后蓝移;在电场、温度和静水压力的变化下,折射率和吸收系数也有类似的变化趋势。所获得的理论结果将通过调整量子点的性能和控制其某些特定特性,为非线性光电器件的设计、优化和应用提供新的机会。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A study of confined Stark effect, hydrostatic pressure and temperature on nonlinear optical properties in 1D GaxAl1-xAs/GaAs/GaxAl1-xAs quantum dots under a finite square well potential
A BSTRACT In the present paper, investigations of nonlinear optical rectification, absorption coefficient and refractive index in a 1D Ga x Al 1 − x As/GaAs/Ga x Al 1 − x As quantum dots under a finite square well potential using simulation software such as COMSOL Multi-Physics and Matlab have been carried out in the presence of electric field, hydrostatic pressure and temperature. Results show that the resonant peaks of ORC (optical rectification coefficient) exhibit a blue shift under increasing of the electric field, while a red shift trailed by a blue shift is displayed under increasing of hydrostatic pressure and temperature. Similar trends take place for the refractive index as well as for the absorption coefficient under changing of the electric field, temperature and hydrostatic pressure. The attained theoretical results would pave a novel opportunity in designing, optimizing and applications of nonlinear opto-electronic devices by tuning the performance of the quantum dots and controlling some of their specific properties.
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来源期刊
Nanosystems: Physics, Chemistry, Mathematics
Nanosystems: Physics, Chemistry, Mathematics NANOSCIENCE & NANOTECHNOLOGY-
CiteScore
1.80
自引率
11.10%
发文量
64
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