高重复频率高效率光参量啁啾脉冲放大研究  

High-repetition-rate and high-conversion-efficiency in optical parametric chirped-pulse amplification system

作　　者：曾小明[1] 魏晓峰[1] 朱启华[1] 黄小军[1] 王晓东[1] 刘兰琴[1] 周凯南[1] 王逍[1] 楚晓亮[1] 郭仪[1] 唐晓东[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：《强激光与粒子束》2005年第B04期101-104,共4页High Power Laser and Particle Beams

基　　金：高温高密度等离子体物理国防重点实验室基金资助课题(51480040204JW0701)

摘　　要：准相位匹配晶体在光参量放大过程具有更大的有效非线性系数,数值分析显示在光参量前级放大过程中就能够提供6.2×106 的高增益饱和放大,参量转换效率大于25%,并基于准相位匹配的参量增益特性给出了一个全二极管激光器泵浦的亚TW级高重复频率OPCPA系统的优化设计。Great nonlinear coefficients of quasi-phase-matching crystals may be used in optical parametric chirped-pulse amplification （OPCPA） system. This is particularly true for the applications that require high repetition rates and small pump energies. The numerical simulations show that a saturatiom amplificatiom gain of above 6.2 ×10^6and over 25% pump-to-signal conversion efficiency can be obtained with a periodically poled crystal in the first stage of the optical parametric amplification. A high repetition rate and sub-terawatt OPCPA laser system with diode-laser pumping was discussed.

关 键 词：光参量啁啾脉冲放大(OPCPA) 准相位匹配 高重复频率 

分 类 号：TN241[电子电信—物理电子学]