利用脉冲复制环提高纳秒脉冲单次测量的动态范围  

Enhanced-Dynamic-Range Single-Shot Measurement of Nanosecond Optical Pulses Based on Fiber Pulse Replication Loop

作　　者：潘雪[1] 李学春[1] 李国扬[1] 陈宇[1] 王江峰[1] 姜有恩[1] 张鹏[1] 卢兴华[1] 

机构地区：[1]中国科学院上海光学精密机械研究所高功率激光物理国家实验室,上海201800

出　　处：《中国激光》2012年第4期163-167,共5页Chinese Journal of Lasers

摘　　要：提出了一种提高纳秒光脉冲单次测量动态范围的方法,其中光纤脉冲复制环用来产生时域上幅度呈指数递减的脉冲复制串,有效环增益为0.955。经软件补偿脉冲复制串使其具有相同的幅度,然后累加平均前18个脉冲,能够将注入的单发纳秒光脉冲动态范围提高2.74倍,这样就可以实现利用光电探测管和示波器对100:1高对比度的惯性约束核聚变(ICF)脉冲测量。A new method is proposed to enhance dynamic range single-short measurement of nanosecond optical pulses.A fiber pulse replication loop system is developed to generate temporal replicated pulse train with an exponential decay curve,and the effective loop gain is 0.955.By compensating each pulse to the same amplitude and averaging 18 pulses in the front of the replicated pulse train,the dynamic range can be improved more than 2.74 times.It can meet the need of 100：1 high dynamic range inertial confinement fusion pulse measurement by combination PIN diode in conjunction with oscilloscopes.

关 键 词：测量 纳秒光脉冲测量 动态范围 光纤脉冲复制环 对比度 

分 类 号：O439[机械工程—光学工程]