高功率装置紫外脉冲的光纤取样技术研究  

Research on sampling of optical fiber for ultraviolet pulse-shape measurement of high power laser

作　　者：夏彦文[1] 唐军[1] 孙志红[1] 刘华[1] 彭志涛[1] 徐隆波[1] 卢宗贵[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：《激光杂志》2010年第3期40-41,共2页Laser Journal

基　　金：中物院激光聚变研究中心和等离子体物理国家级重点实验室创新基金资助

摘　　要：针对高功率激光装置激光束数多、脉冲短、角漂移大等问题,在紫外光时间脉冲波形测试中采用成像光纤耦合取样技术,理论设计并制作透镜成像的耦合取样系统,实验测试该系统对时间脉冲波形测试产生影响。实验结果表明,取样系统耦合角度范围大于±1’、对光束平移量在±2mm范围能够不失真的探测时间波形,脉冲幅度起伏变化在2倍,时间脉冲波形测试畸变量在20ps内。该技术有效地解决了时间脉冲波形测试中稳定耦合问题,保证了测量系统的可靠性。The lens imaging method is adopted in sampling of optical fiber for the measurement of temporal profile of high power laser in order to solve the problem of multi-beams,the short pulse,and the great drift of beams.The beam coupling system using lens imaging method is designed,and the influence of temporal profile is given in experimentally.It is shown that the range of coupling angle is bigger than ±1＇,the beam shift between 2mm,pulse fluctuation range is less than 2 times,and the time distortion quantity in 20ps.This technology has solved the stable coupling problem effectively,and guaranteed the measurement system reliability.

关 键 词：光纤光学 光耦合 脉冲波形 脉冲展宽 高功率激光 

分 类 号：TN247[电子电信—物理电子学]