Second-order moments of a multi-Gaussian Schell-model beam in a turbulent atmosphere

被引：48
作者：
Du, Shengcai [1 ]
Yuan, Yangsheng [1 ]
Liang, Chunhao [1 ]
Cai, Yangjian [1 ]
机构：
[1] Soochow Univ, Sch Phys Sci & Technol, Suzhou 215006, Peoples R China
来源：
OPTICS AND LASER TECHNOLOGY | 2013年 / 50卷
基金：
中国国家自然科学基金;
关键词：
Mult-Gaussian Schell-model beam; Turbulent atmosphere; Second-order moments; DARK HOLLOW BEAMS; FLAT-TOPPED BEAMS; PARTIALLY COHERENT BEAMS; SCINTILLATION INDEX; AVERAGE INTENSITY; PROPAGATION FACTOR; GENERAL BEAMS; POLARIZATION;
D O I：
10.1016/j.optlastec.2013.01.027
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The multi-Gaussian Schell-model (MGSM) beam was introduced recently [Opt. Lett. 37, 2970 (2012); J. Opt. Soc. Am. A 29, 2159 (2012)]. In this paper, we derive analytical expressions for the second-order moments of the Wigner distribution function of a MGSM beam in a turbulent atmosphere based on the extended Huygens-Fresnel integral. With the help of the derived formulae, the evolution properties of the propagation factor and the effective radius of curvature of a MGSM beam in a turbulent atmosphere are studied in detail. Our results show that a MGSM beam is affected less by the atmospheric turbulence than a GSM beam, which will be useful in long-distance free-space optical communications. (c) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：14 / 19
页数：6
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