Polaron effects on the refractive index changes in cylindrical quantum dots with parabolic potential

被引：2

作者：

Li, Ning ^{[1
]}

Guo, Kang-Xian ^{[1
]}

Shao, Shuai ^{[1
]}

机构：

[1] Guangzhou Univ, Dept Phys, Coll Phys & Elect Engn, Guangzhou 510006, Guangdong, Peoples R China

来源：

SUPERLATTICES AND MICROSTRUCTURES | 2011年 / 50卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Quantum dots; Polaron effect; Refractive index changes; NONLINEAR-OPTICAL SUSCEPTIBILITY; 2ND-HARMONIC GENERATION; HYDROGENIC DONOR; ABSORPTION; PHONON; WELLS; FIELD; TRANSPORT;

D O I：

10.1016/j.spmi.2011.05.001

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The effect of electron-LO-phonon interaction on refractive index changes (RICs) for cylindrical quantum dots (CQDs) with an applied electric field is theoretically investigated. Analytic forms of the linear and third-order nonlinear the RICs are obtained for a cylindrical QD by using compact-density-matrix approach and iterative method, and the numerical results are presented for a GaAs cylinder quantum dot. The results show that the RICs coefficient is greatly enhanced and the peak shift to the aspect of high energy when considering the influence of electron-LO-phonon interaction. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：601 / 608

页数：8

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