高斯-贝塞耳光束在湍流大气中的传输特性  

Propagation Properties of Gaussian-Bessel Beams in a Turbulent Atmosphere

作　　者：陈宝算[1] 王涛[1] 陈子阳[1] 蒲继雄[1] 

机构地区：[1]华侨大学信息科学与工程学院,福建泉州362021

出　　处：《华侨大学学报（自然科学版）》2008年第3期347-352,共6页Journal of Huaqiao University(Natural Science)

基　　金：国家自然科学基金资助项目(60477041);福建省自然科学基金资助项目(A0510018)

摘　　要：根据广义惠更斯-菲涅耳原理,推导高斯-贝塞耳光束在湍流大气中传输时光强分布变化规律的理论公式.研究高斯-贝塞耳光束在湍流大气中的传输特性,讨论湍流扰动强弱及拓扑荷数大小对其传输特性的影响.研究结果表明,湍流扰动强弱及拓扑荷数的大小都会影响光束的传输特性.当拓扑荷数相同时,湍流扰动越强,则光强分布变化越快;当湍流扰动相同时,光强分布变化速度随拓扑荷数的增大而减小.Based on the generalized Huygens-Fresnel Principle, the intensity distribution formula of Gaussian-Bessel beams propagating in a turbulent atmosphere is derived. The propagation properties of Gaussian-Bessel beams in turbulent atmosphere are investigated. The influence of turbulence and topological charges on propagation properties is discussed. It is shown that both the turbulent atmosphere and topological charges will influence the beam propagation. For certain topological charges, the intensity distribution changes faster when the beam propagates in a stronger turbulence. However, for the same turbulent atmosphere, the intensity distribution of a Gaussian-Bessel beam changes slowly with the increasing of the topological charges.

关 键 词：高斯-贝塞耳光束 广义惠更斯-菲涅耳原理 湍流大气 传输特性 

分 类 号：O436[机械工程—光学工程]