聚焦脉冲激光大气传输热晕效应的数值分析

Numerical analysis of thermal blooming effects for focusing multi-pluse laser propagation in atmosphere

利用激光大气传输四维程序对序列脉冲激光大气传输热晕效应进行了数值计算和分析。对于均匀大气路径上聚焦传输序列脉冲激光进行数值仿真计算得到，风场渡越时间内的脉冲数Np在2～6之间有利于传输；然后对实际大气模式下序列脉冲激光进行了数值计算，得到的平均脉冲数N^-p可以在一定条件下对序列脉冲激光进行定量表征的结论。

The thermal blooming effects of focusing multi-pulse laser was computed and analyzed by four-dimension code of laser propagation in atmosphere. The laser efficiency of propagation can be improved by using multi-pulse laser in the uniform atmosphere, when the number of pulses per flow time .Np is from 2 to 6. The defined average pulses N^-p can describe thermal blooming effects of multi-pulse laser propagating through the practical air under certain conditions.