Hollow Gaussian beams in strongly nonlocal nonlinear media

被引：27

作者：

Yang Zhen-Jun ^{[1
]}

Lu Da-Quan ^{[1
]}

Hu Wei ^{[1
]}

Zheng Yi-Zhou ^{[1
]}

Gao Xing-Hui ^{[1
]}

机构：

[1] S China Normal Univ, Lab Photon Informat Technol, Guangzhou 510631, Guangdong, Peoples R China

来源：

CHINESE PHYSICS B | 2010年 / 19卷 / 12期

基金：

中国国家自然科学基金;

关键词：

strong nonlocality; hollow Gaussian beam; beam propagation; PROPAGATION; SOLITONS; GENERATION; ATOMS; TRAP;

D O I：

10.1088/1674-1056/19/12/124212

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The propagation of hollow Gaussian beams in strongly nonlocal nonlinear media is studied in detail. Two analytical expressions are derived. For hollow Gaussian beams, the intensity distribution always evolves periodically. However the second-order moment beam width can keep invariant during propagation if the input power is equal to the critical power. The interaction of two hollow Gaussian beams and the vortical hollow Gaussian beams are also discussed. The vortical hollow Gaussian beams with an appropriate topological charge can keep their shapes invariant during propagation.

引用

页数：8

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