太赫兹科学与电子信息学报, 2015, 13 (6): 971, 网络出版: 2016-01-26
基于级联光电的 ns激光脉冲高对比度波形测量
High-contrast measurement for ns high-power laser pulse based on cascaded photodetection
摘要
为满足激光驱动惯性约束聚变 (ICF)点火中高对比度整形脉冲波形测试的需求，基于多脉冲波形拼接的级联光电探测法，在神光 III主机装置上开展了 ns高功率激光脉冲波形高对比度测量的实验研究。利用具有截止饱和特性的超快光电探测器，在实验中对凹形脉冲深度进行多通道波形测试。实验结果显示，经过多脉冲拼接得到的凹形脉冲底部具有 350:1的对比度，远大于单通道单脉冲波形 30:1的对比度。
Abstract
For the requirements of the measurement of the high-contrast shaped pulse Inertial Confinement Fusion(ICF) based on the cascaded photodetection of multiple pulses, experimental research on high-contrast measurement for ns high-power laser pulse is developed at SG-III laser system. Using the ultra-fast photodetector, the bottom of a concave pulse is measured through multi-channels in experiment. The experimental results show that the concave pulse obtained by the multi-pulses joint is of the contrast of 350:1 better than 30:1 obtained through single channel.
董军, 孙志红, 卢宗贵, 彭志涛, 夏彦文, 元浩宇, 张波, 刘华, 吕嘉坤, 唐军. 基于级联光电的 ns激光脉冲高对比度波形测量[J]. 太赫兹科学与电子信息学报, 2015, 13(6): 971. DONG Jun, SUN Zhihong, LU Zhonggui, PENG Zhitao, XIA Yanwen, YUAN Haoyu, ZHANG Bo, LIU Hua, LV Jiakun, TANG Jun. High-contrast measurement for ns high-power laser pulse based on cascaded photodetection[J]. Journal of terahertz science and electronic information technology, 2015, 13(6): 971.
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