Hollow Gaussian beams in strongly nonlocal nonlinear media

doi:10.1088/1674-1056/19/12/124212

中国物理B ›› 2010, Vol. 19 ›› Issue (12): 124212-124212.doi: 10.1088/1674-1056/19/12/124212

Hollow Gaussian beams in strongly nonlocal nonlinear media

杨振军, 陆大全, 胡巍, 郑一周, 高星辉

Laboratory of Photonic Information Technology, South China Normal University, Guangzhou 510631, China

收稿日期:2010-05-04 修回日期:2010-06-02 出版日期:2010-12-15 发布日期:2010-12-15
基金资助:
Project supported by National Natural Science Foundation of China (Grant Nos. 10804033 and 10674050), Program for Innovative Research Team of Higher Education of Guangdong Province of China (Grant No. 06CXTD005), the Specialized Research Fund for the Doctoral Program of Higher Education (Grant No. 200805740002), and the Natural Science Foundation of Hebei Province of China (Grant No. F2009000321).

Hollow Gaussian beams in strongly nonlocal nonlinear media

Yang Zhen-Jun(杨振军), Lu Da-Quan(陆大全), Hu Wei(胡巍)^†ger, Zheng Yi-Zhou(郑一周), and Gao Xing-Hui(高星辉)

Laboratory of Photonic Information Technology, South China Normal University, Guangzhou 510631, China

Received:2010-05-04 Revised:2010-06-02 Online:2010-12-15 Published:2010-12-15
Supported by:
Project supported by National Natural Science Foundation of China (Grant Nos. 10804033 and 10674050), Program for Innovative Research Team of Higher Education of Guangdong Province of China (Grant No. 06CXTD005), the Specialized Research Fund for the Doctoral Program of Higher Education (Grant No. 200805740002), and the Natural Science Foundation of Hebei Province of China (Grant No. F2009000321).

摘要/Abstract

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.

Abstract: 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.

Key words: strong nonlocality, hollow Gaussian beam, beam propagation

中图分类号: (Fourier optics)

42.30.Kq

42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation)

杨振军, 陆大全, 胡巍, 郑一周, 高星辉. Hollow Gaussian beams in strongly nonlocal nonlinear media[J]. 中国物理B, 2010, 19(12): 124212-124212.

Yang Zhen-Jun(杨振军), Lu Da-Quan(陆大全), Hu Wei(胡巍), Zheng Yi-Zhou(郑一周), and Gao Xing-Hui(高星辉). Hollow Gaussian beams in strongly nonlocal nonlinear media[J]. Chin. Phys. B, 2010, 19(12): 124212-124212.

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Hollow Gaussian beams in strongly nonlocal nonlinear media

Hollow Gaussian beams in strongly nonlocal nonlinear media

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