激光束在大气中长距离传输聚焦特性的研究  

Focus Characteristics of Laser Beam for Long Distance Propagation in Atmosphere

作　　者：李现勤[1] 程兆谷[1] 蒋金波[1] 许国良[1] 石鸿斌[1] 赵全忠[1] 

机构地区：[1]中国科学院上海光学精密机械研究所,上海201800

出　　处：《光学学报》2001年第3期324-329,共6页Acta Optica Sinica

基　　金：国家自然科学基金!(699780 2 2 )资助项目

摘　　要：研究了大气湍流与热晕对于几种不同波长激光束的长距离传输聚焦特性的影响。The influence of atmospheric turbulence and thermal blooming on focus characteristics of laser beam is studied for several typical lasers with different wavelength. It is shown that during the long distamce propagation in atmosphere, the excursion of the laser beam axis is very otvious, the main reason of which is the diffraction index of atmosphere changes with the altitude and temperature The excursion of the laser beam axis for long distance propagation in atmosphere is obtained for several laser beam axes. The calculations coincide with the experimental result.

关 键 词：聚焦特性 光束质量 光束漂移 大气传输 湍流 热晕 激光束 

分 类 号：TN241[电子电信—物理电子学]