Polaron effects on the optical rectification in asymmetrical semi-exponential quantum wells

被引：20
|
作者：
Xiao, Bo [1 ]
Guo, Kangxian [1 ]
Mou, Sen [1 ]
Zhang, Zhongmin [1 ]
机构：
[1] Guangzhou Univ, Coll Phys & Elect Engn, Dept Phys, Guangzhou 510006, Guangdong, Peoples R China
来源：
SUPERLATTICES AND MICROSTRUCTURES | 2014年 / 69卷
基金：
中国国家自然科学基金;
关键词：
Quantum well; Optical rectification; REFRACTIVE-INDEX CHANGES; IMPURITY BINDING-ENERGY; TILTED MAGNETIC-FIELD; ABSORPTION-COEFFICIENTS; ELECTRIC-FIELD; WIRES;
D O I：
10.1016/j.spmi.2014.01.016
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Polaron effects on the optical rectification in asymmetrical semiexponential quantum wells(ASEQWs) are theoretically investigated. The expressions for optical rectification(OR) is obtained with the framework of the compact-density-matrix approach and iterative method. It is founded that with considering the electron-Lophonon interaction(ELOPI), the energy levels and the wave functions of an electron confined in ASEQWs are obtained. Numerical results are illustrated for a typical GaAs/AlGaAs. It is founded that when considering the electron-Lo-phonon, the resonant peak of the OR A is enhanced, and the blue shifts are also observed. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：122 / 128
页数：7
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