Effect of intense laser field on the nonlinear optical susceptibilities in an asymmetric single quantum well

被引：7
|
作者：
Panda, B. K. [1 ]
Panda, S. [2 ]
机构：
[1] Ravenshaw Univ, Dept Phys, Cuttack 753003, Orissa, India
[2] Ravenshaw Univ, Dept Math, Cuttack 753003, Orissa, India
来源：
SUPERLATTICES AND MICROSTRUCTURES | 2013年 / 61卷
关键词：
Laser radiation effects; Excitons; Eigenvalues and eigen functions; Fourier series; Optoelectronic devices; Infrared detectors; APPLIED ELECTRIC-FIELD; 2ND-HARMONIC GENERATION; STARK SHIFT; RECTIFICATION; TRANSITIONS; ABSORPTION; MODEL; ATOMS; BAND;
D O I：
10.1016/j.spmi.2013.06.002
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
In the present paper, the effect of a high-frequency laser field on a single asymmetric rectangular quantum well is studied in the Fourier series method. The effect of laser field on the confining potential of the quantum well is taken through the laser dressing parameter which depends upon the strength of intensity and the magnitude of frequency of the laser field. The step type confining potential of the rectangular asymmetric well is modified by the laser dressing parameter to a smooth function. In this quantum well, linear, third-order nonlinear, nonlinear optical rectification and second harmonic generation susceptibilities under another laser source with low frequency are calculated using the density matrix method. The linewidths for susceptibilities are estimated taking the electron scattering with the longitudinal optic phonon. Compared to laser undressed well, the nonlinear optical properties in the laser dressed well are blue shifted and enhanced due to larger energy separations and oscillator strengths, respectively. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：124 / 133
页数：10
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