Propagation of various flat-topped beams in a turbulent atmosphere

被引：121
|
作者：
Cai, Yangjian [1 ]
机构：
[1] Royal Inst Technol, Sch Elect Engn, Div Electromagnet Engn, S-10044 Stockholm, Sweden
[2] Royal Inst Technol, Joint Res Ctr Photon, S-10044 Stockholm, Sweden
[3] Zhejiang Univ, Hangzhou 310058, Peoples R China
来源：
JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS | 2006年 / 8卷 / 06期
关键词：
flat-topped beam; propagation; turbulent atmosphere;
D O I：
10.1088/1464-4258/8/6/008
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The propagation of flat-topped beams with circular, elliptical and rectangular symmetries in a turbulent atmosphere is investigated. Analytical formulae for the average intensity of various flat-topped beams propagating in a turbulent atmosphere are derived in a tensor form. The formulae derived can easily be reduced to those for flat-topped beams propagating in free space (in the absence of turbulence). The propagation properties of flat-topped beams are studied in detail. We find that a flat-topped beam with circular or non-circular symmetry will evolve into a circular Gaussian beam in the far field under the influence of atmospheric turbulence, which is quite different to its properties in free space. Our method provides an effective and convenient way to analyse the propagation of various flat-topped beams in a turbulent atmosphere.
引用
收藏
页码：537 / 545
页数：9
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