Scintillation measurements of broadband 980nm laser light in clear air turbulence

被引：2

作者：

Davidson, FM ^{[1
]}

Bucaille, S ^{[1
]}

Gilbreath, C ^{[1
]}

Oh, E ^{[1
]}

机构：

[1] Johns Hopkins Univ, Dept Elect & Comp Engn, Baltimore, MD 21218 USA

来源：

FREE-SPACE LASER COMMUNICATION AND ACTIVE LASER ILLUMINATION III | 2004年 / 5160卷

关键词：

optical communications; coherence; atmospheric optics; turbulence;

D O I：

10.1117/12.504863

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Intensity scintillation variances and intensity probability density functions (PDF) were experimentally measured for broad-band (2nm), 980 nm laser light reflected by two corner-cube retro-reflectors as a function of retro-reflector lateral spacing over a short (75 m) atmospheric optical path. The PDFs transitioned from broad double peaked "beta-shaped" densities to log-normal ones as the retro-reflector spacing was increased to exceed the optical field lateral coherence length. Specific spacing for a given average atmospheric refractive index structure constant C-n(2) eliminated coherent interference between light beams returned by each retro-reflector.

引用

页码：13 / 24

页数：12

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