文献类型：期刊文献

英文题名：Nonlinear optical properties in AlGaAs/GaAs symmetric coupled quantum wells

作者：Ti, Ruixia[1];Wang, Chaoyang[1];Wang, Guanghui[2]

第一作者：遆瑞霞

通讯作者：Ti, RX[1]

机构：[1]Xinxiang Univ, Coll Phys & Elect Engn, Xinxiang 453003, Henan, Peoples R China;[2]South China Normal Univ, Lab Nanophoton Funct Mat & Devices, Guangzhou 510006, Peoples R China

第一机构：新乡学院物理与电子工程学院

通讯机构：[1]corresponding author), Xinxiang Univ, Coll Phys & Elect Engn, Xinxiang 453003, Henan, Peoples R China.|[110717]新乡学院物理与电子工程学院;[11071]新乡学院;

年份：2021

卷号：38

期号：6

起止页码：1966-1973

外文期刊名：JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS

收录：;EI(收录号：20212310467041);Scopus(收录号：2-s2.0-85107271276);WOS:【SCI-EXPANDED(收录号:WOS:000658147500026)】；

基金：National Natural Science Foundation of China (51802275); Ninth Group of Key Disciplines in Henan Province (2018119); Science and Technology Research Project of Henan Province (202102210001); Key Scientific Project of Higher Education of Henan Province (19A610007, 20B140012); Doctoral Scientific Research Start-up Project of Xinxiang University (1366020083, 1366020099); Innovation and Entrepreneurship Training Program for College Students in Henan Province (202011071016, S202011071018).

语种：英文

外文关键词：Aluminum gallium arsenide - Gallium compounds - Iterative methods - Light absorption - Numerical methods - Refractive index - Semiconductor quantum wells

摘要：Based on the density matrix approach and iterative method, we calculated the analytic forms of linear and third-order nonlinear optical absorption coefficients and refractive index changes for symmetric coupled quantum wells (SCQWs) considering a two-level system, and gave the corresponding numerical results. The calculated results show that the optical properties of SCQWs are significantly better than those of asymmetrically coupled quantum wells, and the optical absorption coefficient and refractive index change are affected by the structure parameters of the SCQWs and the incident optical intensity. Their physical mechanisms are elucidated. (C) 2021 Optical Society of America