摘要
热晕是高能激光大气传输的最重要非线性效应之一。本文编制了一套四维（三维空间，一维时间）程序用来模拟热晕及其相位补偿，对在实验条件下进行的热晕畸变及其自适应光学相位补偿实验作了数值模拟，从而将理论上的数值模拟和实验研究作了比较和分析。由计算和实验结果得到：热晕的存在会使高能激光在传输中光学质量变差，自适应光学系统对热晕造成的畸变有较好的修正，但如存在扰动（如初始光束自身不稳定，湍流扰动等），则会由于不稳定性而降低其修正效果。
Thermal blooming is one of the most important nonlinear effects on high energy laser propagation in the atmosphere. A set of 4D(3D for space, 1D for time)Program is given in this paper to simulate thermal blooming simutation and phase compensation. Numerical simulation in the experiment of simulating thermal blooming and adaptiv-optics phase compensaion for it is also made. The theoretical numerical simulation and the experimental rerarch are compared and analyzed.The results from theoretical computaion and the experiment show that the optical quality of high power laser propagating in the atmosphere will get bad due to thermal blooming, phase compensation is effective on correcting thermal blooming when there is perturbation (such as the instability of the beam turbulence fluctuation etc).
出处
《红外与激光工程》
EI
CSCD
1996年第1期51-59,共9页
Infrared and Laser Engineering
关键词
高能激光
热晕
数值模拟计算
实验
s: Thermal blooming, Adaptive optics ,Phase control ,High power lase (Optical phenomne), Atmospheric propagation aberration
