宽带光参量放大过程中的转换效率提升  

Conversion-efficiency improvement during broadband optical parametric amplification

作　　者：温静[1] 左言磊[1] 周松[1] 王波鹏[1] 曾小明[1] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,等离子体物理重点实验室,四川绵阳621900

出　　处：《强激光与粒子束》2014年第5期105-109,共5页High Power Laser and Particle Beams

基　　金：国家高技术发展计划项目

摘　　要：建立了宽带光参量放大数值模拟平台,并基于此对宽带光参量放大系统的能量转换效率提升进行优化设计,根据模拟计算结果可以对实验中能够达到的最优化能量转换效率进行预判。建立了验证实验平台并进行了实验,研究并攻克了实验中遇到的参量荧光抑制、信号光,泵浦光空间精确匹配、脉宽精确匹配、时间波形整形等关键技术难点。在抑制参量荧光的同时实现了宽带光参量放大过程能量转换效率的提升,在单级宽带光参量放大过程中获得了30%的能量转换效率。We simulated the amplification process during the broadband optical parametric amplification, and we proposed an improved design for high conversion-efficiency during broadband optical parametric amplification based on our simulation re- sult. We carried out an experimental research based on our design. After our research on the key technologies, such as spatial shaping, temporal shaping, superfluorescence suppression, bandwidth matching, we increased the conversion efficiency with sup- pression of the superfluorescence. The conversion efficiency with our one-stage optical parametric amplification could reach 30 %.

关 键 词：宽带光参量放大 参量荧光抑制 能量转换效率 信噪比 时间整形 

分 类 号：O436.1[机械工程—光学工程]