聚焦脉冲激光大气传输热晕效应的数值分析

推进技术 ›› 2007, Vol. 28 ›› Issue (5): 574-577.

聚焦脉冲激光大气传输热晕效应的数值分析

冯晓星,范承玉,王英俭,乔春红

中国科学院安徽光学精密机械研究所大气光学中心安徽合肥230031;中国科学院安徽光学精密机械研究所大气光学中心安徽合肥230032;中国科学院安徽光学精密机械研究所大气光学中心安徽合肥230033;中国科学院安徽光学精密机械研究所大气光学中心安徽合肥230034

发布日期:2021-08-15
基金资助:
国家“九七三”项目(61328)

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

Center for Atmospheric Optics,Anhui,Inst.of Optics and Fine Mechanics,Academia Sinica,Hefei 230031,China;Center for Atmospheric Optics,Anhui,Inst.of Optics and Fine Mechanics,Academia Sinica,Hefei 230032,China;Center for Atmospheric Optics,Anhui,Inst.of Optics and Fine Mechanics,Academia Sinica,Hefei 230033,China;Center for Atmospheric Optics,Anhui,Inst.of Optics and Fine Mechanics,Academia Sinica,Hefei 230034,China

Published:2021-08-15

摘要/Abstract

摘要： 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-NP可以在一定条件下对序列脉冲激光进行定量表征的结论。

关键词: 激光大气传输;序列脉冲;风场渡越时间;数值计算

Abstract: The thermal blooming effects of focusing multipulse 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 P can describe thermal blooming effects of multi-pulse laser propagating through the practical air under certain conditions.

Key words: Propagation;Multi-pulse;Gas transit time across the beam;Numerical calculation

冯晓星,范承玉,王英俭,乔春红. 聚焦脉冲激光大气传输热晕效应的数值分析[J]. 推进技术, 2007, 28(5): 574-577.