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

页码：105 / 115

页数：11

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