激光技术2011，Vol.35Issue(6)：849-853,5.DOI:10.3969/j.issn.1001-3806.2011.06.033
ELGB在湍流大气中通过圆形光阑的传输特性
Propagation characteristics of elegant Laguerre-Gaussian beam passing through a circular aperture in turbulent atmosphere
摘要
Abstract
In order to study propagation characteristics of elegant Laguerre-Gaussian beam(ELGB) passing through a circular aperture in turbulent atmosphere, corresponding analytical formulate based on the extend Huygens-Fresnel integral were deduced and numerical simulation results were obtained. The results indicate that when the value of the truncation parameter S < 1, the beam profile of ELGB after propagating long distance is similar to that of the source, I. E. , hallow beam, but the central normalized intensity is larger than 0; however, the profile tends to Gaussian distribution as the parameter δ≥1. Meanwhile, the weaker the turbulent atmosphere is, the more easily it can preserve the average intensity profile as the source. And the average intensity profiles of different beam orders were also studied. The results are useful to laser beam propagation and free-space laser communication.关键词
大气与海洋光学/复宗量拉盖尔-高斯光束/拓展的惠更斯-菲涅耳原理/湍流大气/光阑Key words
atmospheric and ocean optics/ elegant Laguerre-Gaussian beam/ extend Huygens-Fresnel integral/ turbulent atmosphere/ aperture分类
数理科学引用本文复制引用
费津程,崔执凤,王家驷,屈军..ELGB在湍流大气中通过圆形光阑的传输特性[J].激光技术,2011,35(6):849-853,5.基金项目
安徽省自然科学基金资助项目(11040606M154) （11040606M154）
安徽省高校自然科学研究资助项目(KJ2010A155) （KJ2010A155）
