Nonlinear optical properties of an off-center donor in a quantum dot under applied magnetic field

被引：38
|
作者：
Xie, Wenfang [1 ]
机构：
[1] Guangzhou Univ, Sch Phys & Elect Engn, Guangzhou 510006, Guangdong, Peoples R China
来源：
SOLID STATE COMMUNICATIONS | 2011年 / 151卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Quantum dot; Donor; Optical properties; ELECTRIC-FIELD; HYDROGENIC DONOR; ABSORPTIONS; IMPURITY; ENERGY;
D O I：
10.1016/j.ssc.2011.01.013
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The nonlinear optical properties of an off-center hydrogenic donor in a two-dimensional quantum dot under applied magnetic field are investigated in detail by using the matrix diagonalization method. Based on the computed energies and wave functions, the linear, third-order and total optical absorption coefficients as well as the refractive index changes have been examined between the ground state (L = 0) and the first excited state (L = 1). The results show that the ion position, the applied magnetic field, the confinement frequency, and the incident optical intensity have an important influence on the nonlinear optical properties of off-center donors. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：545 / 549
页数：5
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