The Evolution of cosh-Gaussian Beams in Strong Nonlocal Nonlinear Media

被引：0
|
作者：
Chen, R-P. [1 ,2 ]
Zhong, L-X. [3 ]
Wu, Q. [4 ]
Dai, C-Q. [1 ]
Zhou, G. [1 ]
机构：
[1] Zhejiang A&F Univ, Sch Sci, Linan 311300, Zhejiang, Peoples R China
[2] S China Normal Univ, Sch Informat & Optoelect Sci & Engn, Guangzhou 510006, Guangdong, Peoples R China
[3] Zhejiang Univ Finance & Econ, Sch Finance, Hangzhou 310018, Peoples R China
[4] Ohio State Univ, Dept Elect & Comp Engn, Columbus, OH 43210 USA
来源：
LASERS IN ENGINEERING | 2013年 / 25卷 / 1-2期
关键词：
Nonlinear optics; strong nonlocal nonlinear (SNN) media; moments method; Hermite-sinusoidal-Gaussian (HSG) beams; PROPAGATION;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We investigate the dynamical properties of the cosh-Gaussian beams in strong nonlocal nonlinear (SNN) media. Based on the moments method. the evolution of cosh-Gaussian beam widths in the root-mean-square (RMS) sense are analytically obtained. The critical powers that keep the RMS beam widths invariant during propagation with uniform wavefront are given. The analytical solution of the cosh-Gaussian beams in SNN media is obtained by the technique of variable transformation. The numerical and graphical results provide intuitive pictures for the evolution of the cosh-Gaussian beams in SNN media. The cosh-Gaussian beams always periodically transform to cos-Gaussian beams as well as revive during propagation in SNN media, despite the difference of their symmetry and initial power. The RMS beam widths of cosh-Gaussian beams are negatively correlated with the initial powers in the SNN medium.
引用
收藏
页码：105 / 115
页数：11
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