Hollow Gaussian beams in strongly nonlocal nonlinear media

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 propagat...

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Bibliographic Details
Published inChinese physics B Vol. 19; no. 12; pp. 310 - 317
Main Author 杨振军 陆大全 胡巍 郑一周 高星辉
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.12.2010
Subjects
临界功率
传输过程
强度分布
解析表达式
非局域
非线性介质
高斯光束
Online AccessGet full text
ISSN1674-1056
2058-3834
DOI10.1088/1674-1056/19/12/124212

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Summary: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.
Bibliography:O435
O437
strong nonlocality, hollow Gaussian beam, beam propagation
11-5639/O4
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/19/12/124212