多路红外激光脉冲波形测量技术  

Pulse-shape measurement technology for multi-beams infrared laser

作　　者：卢宗贵[1] 夏彦文[1] 唐军[1] 孙志红[1] 刘华[1] 彭志涛[1] 徐隆波[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：《红外与激光工程》2011年第6期1129-1132,共4页Infrared and Laser Engineering

基　　金：中国工程物理研究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

摘　　要：介绍了一种用于高功率大型激光装置的多路红外激光脉冲波形测量原理和系统构成。整个测量系统由取样与光纤耦合单元、光纤传输单元、光纤合束与光电转换单元、数据采集单元构成,针对多路合束导致测量系统存在取样稳定性难题采用望远缩束、成像相结合的光纤耦合方法解决了光束的角漂问题,并对脉冲测试的影响因素进行了系统评价。实验结果表明,利用该系统测得的纳秒脉冲展宽量小于150 ps,系统稳定耦合角度变化范围大于±1 mrad。该技术降低了系统的复杂性,降低了测量成本,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 configuration and principle of the temporal profile measurement system were introduced,which was used for multi-beam infrared laser of the large high-power facility.The system was composed of power sampling unit,fiber transmission unit,multiplexing coupler unit,photoelectric conversion unit and data acquisition unit.For the systemic problem of sample stability in the multiplexing measurement system,the lens imaging method was adopted in sampling of optical fiber in order to solve the problem of the great drift of beams.The influence of the temporal profile measurement was systematically evaluated.The experiment results show that with the nanosecond-level pulse,the pulse broadening is controlled within 150 ps,and the range of coupling angle is bigger than ±1′.This technology has solved the stable coupling problem effectively,and guarantees the measurement system reliability.

关 键 词：光纤光学 脉冲波形 高功率激光 

分 类 号：TN247[电子电信—物理电子学]