Studies on the third-harmonic generations in cylindrical quantum dots with an applied electric field

被引:71
|
作者
Shao, Shuai [1 ]
Guo, Kang-Xian [1 ]
Zhang, Zhi-Hai [1 ]
Li, Ning [1 ]
Peng, Chao [1 ]
机构
[1] Guangzhou Univ, Dept Phys, Coll Phys & Elect Engn, Guangzhou 510006, Guangdong, Peoples R China
基金
中国国家自然科学基金;
关键词
Quantum dots; Third harmonic generation; NONLINEAR-OPTICAL RECTIFICATION; ABSORPTION-COEFFICIENTS; 2ND-HARMONIC GENERATION; RAMAN-SCATTERING; SUSCEPTIBILITY; TRANSITIONS; MODEL;
D O I
10.1016/j.spmi.2010.09.010
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The third-harmonic generation (THG) coefficient for cylinder quantum dots with an applied electric field is theoretically investigated Using the compact density-matrix approach and the iterative method we get the analytical expression of the THG coefficient and the numerical calculations of the typical GaAs/AlAs cylinder quantum dots are presented The results show that the THG coefficient can reach the magnitude of 10(-9) m(2)/V-2 Apart from the length L and radius R of cylindrical quantum dots both the parabolic confining potential and an applied electric field can also Influence the THG coefficient (C) 2010 Elsevier Ltd All rights reserved
引用
收藏
页码:541 / 549
页数:9
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