Vectorial nonparaxial flattened gaussian beams and their beam quality in terms of the power in the bucket

被引:10
|
作者
Kang, Xiaoping [1 ]
Lue, Baida
机构
[1] Sichuan Univ, Inst Laser Phys & Chem, Chengdu 610064, Peoples R China
[2] Qiong Zhou Univ, Dept Phys, Wuzhishan 572200, Peoples R China
基金
中国国家自然科学基金;
关键词
vectorial nonparaxial flattened Gaussian beam; free-space propagation; power in the bucket;
D O I
10.1016/j.optcom.2005.12.032
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The closed-form propagation equations of vectorial nonparaxial flattened Gaussian beams in free space are derived and some special cases are discussed. The power in the bucket (PIB) is extended to the nonparaxial regime, where the intensity is replaced by the z component of the time-averaged Poynting vector, and used to characterize beam quality of nonparaxial beams in the far field. Numerical calculation results show the dependence of the PIB of vectorial nonparaxial FGBs on the waist-width to wavelength ratio w(0)/lambda and beam order N. (C) 2005 Elsevier B.V. All rights reserved.
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页码:1 / 7
页数:7
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