Propagation of Hermite-cosh-Gaussian laser beams in n-InSb

被引：31
|
作者：
Patil, S. D. [1 ]
Takale, M. V.
Dongare, M. B.
机构：
[1] Shivaji Univ, Dept Phys, Div Nonlinear Opt, Kolhapur 416004, Maharashtra, India
来源：
OPTICS COMMUNICATIONS | 2008年 / 281卷 / 18期
关键词：
Hermite-cosh-Gaussian beams; n-InSb; parabolic wave equation; self-focusing/defocusing;
D O I：
10.1016/j.optcom.2008.05.045
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The propagation of Hermite-cosh-Caussian (HChG) laser beams in n-InSb are investigated for 0, 1 and 2 mode indices. The field distribution in the medium is expressed in terms of beam-width parameter f and decentred parameter b. The differential equations for f-parameter are established by parabolic wave equation approach under paraxial approximation. Analytical solutions are obtained under the condition R-n < R-d, where, R-n is the self-focusing length and R-d is the diffraction length. The behaviour of f-parameter with the dimensionless distance of propagation eta for various b values is examined by numerical estimates. The results are presented graphically. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：4776 / 4779
页数：4
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