多路激光功率平衡测量技术  

Power Balance Measurement Technique of Multi-Beam Laser

作　　者：孙志红[1] 王文义[1] 刘华[1] 夏彦文[1] 彭志涛[1] 徐隆波[1] 傅学军[1] 元浩宇[1] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《中国激光》2009年第6期1493-1497,共5页Chinese Journal of Lasers

基　　金：高温高密度等离子体物理国防科技重点实验室(9140C6803020703)资助课题

摘　　要：针对现在多路大功率激光器的功率平衡缺乏对评定参数计算方法的细致讨论,提出了瞬时功率和激光装置束间功率不平衡度的详细数值计算方法。根据理论模拟结果,选取平顶脉冲时间脉冲波形半峰全宽对应的中心位置作为时间波形的时间基准进行功率平衡计算。实验中,用光电转换元件、示波器和能量卡计分别进行各路激光束到达靶点的时间同步、脉冲时间波形和能量测试,计算得到多路激光瞬时功率和激光装置束间功率不平衡度,并分析瞬时功率测试结果的不确定度,从而给出多路激光功率平衡测量技术和方法。The calculation methods have been developed for estimating the power and power imbalance, for that there is no disscussion on calculation method of power balance in detail currently. According to the results of theoretical simulation, the center position of temporal profile full width half maximum is fixed as the base point of power balance calculation for the flat-top pulse. Photo-electricity conversion component, oscillograph, and energy calorimeter are used to measure beam synchronization of arrive target, temporal profile and energy. Detailed results of the power and the power imbalance of laser facility from these calculations are proposed, and the uncertainty is analyzed. Consequently, the measurement technique and methods of multi-beam laser power balance are given.

关 键 词：测量 激光功率 功率不平衡度 时间波形 不确定度 

分 类 号：O434.12[机械工程—光学工程]