强激光系统光学元件波前相位梯度分析  

RMS gradient analysis of the high power laser system components

作　　者：张蓉竹[1] 石琦凯[2] 江腾蛟[1] 蔡邦维[1] 

机构地区：[1]四川大学电子信息学院光电系,四川成都610064 [2]成都精密光学工程研究中心,四川成都610041

出　　处：《强激光与粒子束》2003年第2期129-131,共3页High Power Laser and Particle Beams

基　　金：国家 8 63计划项目资助课题

摘　　要：介绍了在高功率固体激光系统中用于评价光学元件对光束聚焦特性影响的参数———波前相位梯度及其检测原理和计算方法 ,并与常用的光学元件评价参数P V值、RMS值以及新引入的评价方式———PSD进行了比较。得到了高功率激光系统中几种典型光学元件的相位梯度分析结果 ,结果表明利用相位梯度分析方法能够有效的对光学元件的加工质量进行评价。To specify the component focus performance the author uses the RMS gradient so that the direct relationship of the fabrication quality and the focus performance of the laser beam can be easily found. In this paper the definition of the RMS gradient and its characteristics are introduced, the differences between the RMS gradient and the P-V, RMS,PSD are discussed. The RMS gradient analyzing results of some typical components employed in the high power laser system are presented. The results show that the RMS gradient is a kind of efficient tool to specify the optical components' fabrication quality.

关 键 词：波前相位梯度 光学元件 强激光系统 ICF 光束聚焦特性 惯性约束核聚变 驱动力系统 

分 类 号：TL639[核科学技术—核技术及应用] TN24[电子电信—物理电子学]