Propagation characteristics of a high-power broadband laser beam passing through a nonlinear optical medium with defects

被引：2

作者：

Xueqiong Chen ^{[1
]}

Xiaoyan Li ^{[1
]}

Ziyang Chen ^{[1
]}

Jixiong Pu ^{[1
]}

Guowen Zhang ^{[2
]}

Jianqiang Zhu ^{[2
]}

机构：

[1] Fujian Provincial Key Laboratory of Light Propagation and Transformation, College of Information Science & Engineering,Huaqiao University

[2] National Laboratory on High Power Laser and Physics Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences

来源：

High Power Laser Science and Engineering | 2013年 / 1(Z1)卷 / Z1期

基金：

中国国家自然科学基金;

关键词：

broadband laser beam; defects; nonlinear medium; self-focusing;

D O I：

暂无

中图分类号：

TN241 [激光物理和基本理论];

学科分类号：

0702 ; 070207 ;

摘要：

The intensity distributions of a high-power broadband laser beam passing through a nonlinear optical medium with defects and then propagating in free space are investigated based on the general nonlinear Schr¨odinger equation and the split-step Fourier numerical method. The influences of the bandwidth of the laser beam, the thickness of the medium,and the defects on the light intensity distribution are revealed. We find that the nonlinear optical effect can be suppressed and that the uniformity of the beam can be improved for a high-power broadband laser beam with appropriate wide bandwidth. It is also found that, under the same incident light intensity, a thicker medium will lead to a stronger self-focusing intensity, and that the influence of defects in the optical elements on the intensity is stronger for a narrowband beam than for a broadband beam.

引用

页码：132 / 137

页数：6

共 3 条

[1] Nonlinear temporal pulse cleaning techniques and application[J]. Yi Xu,Jianzhou Wang,Yansui Huang,Yanyan Li,Xiaomin Lu,Yuxin Leng.High Power Laser Science and Engineering. 2013(02)
[2] Beam positioning stability analysis on large laser facilities[J]. Fang Liu,Zhigang Liu,Liunian Zheng,Hongbiao Huang,Jianqiang Zhu.High Power Laser Science and Engineering. 2013(01)
[3] Transverse intensity distributions of a broadband laser modulated by a hard-edged aperture .2 Runwu Peng,Yunxia Ye,Zhixiang Tang,Dianyuan Fan. J. Opt. Soc. Amer. A . 2005

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