The far-field directionality of partially coherent flat-topped beams propagating through atmospheric turbulence

被引：10
|
作者：
Ji, Xiaoling [1 ]
机构：
[1] Sichuan Normal Univ, Dept Phys, Chengdu, Peoples R China
来源：
JOURNAL OF MODERN OPTICS | 2008年 / 55卷 / 13期
基金：
中国国家自然科学基金;
关键词：
far-field directionality; partially coherent flat-topped beam; atmospheric turbulence;
D O I：
10.1080/09500340801966165
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The far-field directionality of partially coherent flat-topped beams propagating through atmospheric turbulence is studied. The closed-form expressions for the mean squared beam width and angular spread of partially coherent flat-topped beams propagating through atmospheric turbulence are derived. It is shown that two partially coherent flat-topped beams may generate the same angular spread, and there exist equivalent partially coherent flat-topped beams which may have the same far-field directionality as a fully coherent Gaussian beam in free space and also in atmospheric turbulence. The far-field directionality of Gaussian Schell-model (GSM) beams in atmospheric turbulence is treated as a special case of partially coherent flat-topped beams. The theoretical results are illustrated by numerical examples and interpreted physically.
引用
收藏
页码：2105 / 2115
页数：11
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