发光学报2005，Vol.26Issue(2)：215-219,5.
双量子阱中的子带光吸收
Intersubband Optical Absorption in Double Quantum Wells
摘要
Abstract
Recently, much attention has been focus on the investigation of the electroabsorption in the GaAs/AlGaAs quantum wells (QW's) because of its possibility of designing new types of electro-optic modulators. Much optical properties of the single QW's with different potential has been and being investigated experimently and theoriticaly with different methods. In these few years, the double quantum wells (DQWs) became the focus of the research. In this paper, by using the density matrix formalism and iterated method, the first-and the third-order intersubband optical absorption of double quantum well with infinit boundary was investigated theoretically. Thereafter, a typical GaAs/AlGaAs DQWs is presented to get the results. The results show that the peak absorption varies with the width of the intermediate potential barrier. And it also shows that the absorption decrease as the incident optical intensity increasing.关键词
双量子阱/子带光吸收Key words
double quantum wells/optical absorption coefficient分类
数理科学引用本文复制引用
邓永晴,郭康贤,于凤梅,俞友宾,王瑞强..双量子阱中的子带光吸收[J].发光学报,2005,26(2):215-219,5.基金项目
国家自然科学基金(60478010) （60478010）
广东省自然科学基金(030500,04105406)资助项目 （030500,04105406）
