红外激光束经卡塞格伦系统衍射后的远场分布  

FAR-FIELD DISTRIBUTIONS OF INFRARED LASER BEAM PASSING THROUGH CASSEGRAIN SYSTEM

作　　者：李正直[1] 倪振宇[1] 

机构地区：[1]杭州大学物理系,浙江杭州310028

出　　处：《红外研究》1990年第1期15-20,共6页

基　　金：浙江省自然科学基金

摘　　要：把卡塞格伦系统等效为圆环光阑,利用高斯光束的贝塞尔级数展开,首次得到了红外激光束经卡塞格伦系统衍射后的远场分布表达式,对所得结果进行了讨论,并和均匀光波场的情形进行了比较。Using the Bessel series expansion of a Gaussian beam, the representation of farfield distributions of an infrared laser beam passing through the Cassegrain system, which is regarded as the obscured aperture, is presented for the first time. The results obtained are discussed and the situations for the incidences of both Gaussian and uniform beam are compared.

关 键 词：高斯光束 衍射图样 卡塞格伦系统 红外激光 远场分布 

分 类 号：O436.1[机械工程—光学工程] O435[理学—光学]