高能激光准直传输远场斯特雷尔比与数值验证  

Strehl Ratio Expressions for High Energy Laser Beams and Numerical Analysis

作　　者：张鹏飞[1] 范承玉[1] 乔春红[1] 马慧敏[1] 张京会[1] 王英俭[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所大气成分与光学重点实验室,安徽合肥230031

出　　处：《光学学报》2012年第7期29-36,共8页Acta Optica Sinica

基　　金：中国科学院合肥物质科学研究院知识创新工程青年人才基金(Y03Rc21121)资助课题

摘　　要：利用扩展惠更斯-菲涅耳原理对高能激光在大气中的传输进行了分析,获得了高能激光准直传输轴上及峰值斯特雷尔比的积分表达式,并使用激光大气传输四维仿真程序对该表达式的适用范围进行了分析及数值模拟验证。结果表明,积分表达式可以很好地适用于无自适应光学系统补偿时的高能激光湍流热晕传输问题,可以用于自适应光学系统补偿时弱热晕条件下的湍流热晕角非等晕问题和弱热晕及中等热晕条件下的湍流热晕聚焦非等晕问题。The propagation performance of high energy laser beams in atmosphere is studied by using extended Huygens-Fresnel diffraction integral, and expressions of axis and peak Strehl ratio are proposed. To examine the scope of these expressions, the results of wave-optics code are compared. It is found that the performance of high energy laser beams in atmosphere can be evaluated by using these expressions when the adaptive optics system is opened, but there is much difference between expressions and the results of wave-optics code under the condition of strong thermal blooming when adaotive optics svstem is closed.

关 键 词：大气光学 扩展惠更斯-菲涅耳原理 高能激光 斯特雷尔比 非等晕性 

分 类 号：TN012[电子电信—物理电子学]