摘要
利用数值模拟方法研究了高斯光束在弱湍流大气中闪烁的空间分布问题。详细给出了计算闪烁指数的方法,分析得出了闪烁指数空间分布的一般特征:闪烁指数在光轴上最小,随着离开光轴距离的增大而增大。模拟结果与Rytov理论预期的结果基本吻合,从而验证了两种方法的可靠性。
The spatial distribution characteristics of the scintillation of a Gaussian-beam propagating in a weak turbulent atmosphere are studied with a numerical simulation algorithm. The evaluation procedure of the scintillation index is investigated thoroughly. It is found that the off-axis scintillation index increases with the off-axis distance and the minimum is on the optical axis. The agreement between results of numerical simulations and the theoretical results validates the reliability of both methods.
出处
《量子电子学报》
CAS
CSCD
北大核心
2006年第3期320-324,共5页
Chinese Journal of Quantum Electronics
基金
国家863计划项目资助课题
关键词
大气光学
激光大气传输
闪烁效应
数值模拟
高斯光束
atmospheric optics
laser propagation in atmosphere
scintillation
numerical simulation
Gaussian-beam
