摘要
讨论了环形孔径高斯光束的远场光斑能量分布 ,并给出了拟合表达式。首先推导了光束没有抖动时远场光斑的光能分布表达式 ,然后研究了各种不同中心遮拦和不同光束截断比 ,在有以及没有激光束抖动的情况下 。
The far-field irradiance distribution of a Gaussian beam which is transmitted from telescope with certain center obscure is researched in this paper. First, we derive a representation of irradiance distribution in far field of a Gaussian beam through a obscured telescope without beam's random jitter, and then give a approximation formula of encircled power and spot radius of certain encircled power ratio with and without beam's jitter due to telescope's center obscure. Finally, we researched the joint effects of truncation and obscure on a Gaussian beam's far-field energy distribution.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2000年第3期257-260,共4页
High Power Laser and Particle Beams
基金
国家 8 63信息获取与处理技术领域资助课题
关键词
高斯光束
远场光斑
环形孔径
Gaussian beam
center obsure
far-field spot
encircled power
