光参量啁啾脉冲放大增益特性研究  

Study on gain properties of optical parametric chirped pulse amplification

作　　者：黄小军[1] 张树葵[1] 袁晓东[1] 王晓东[1] 唐军[1] 曾小明[1] 魏晓峰[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》2002年第4期516-520,共5页High Power Laser and Particle Beams

基　　金：中国工程物理研究院重大基金资助课题 ( YJ2 0 1)

摘　　要：通过对非线性三波耦合方程组进行数值求解 ,研究了光参量放大 (OPA)的增益特性及饱和放大特性。给出了泵浦光、信号光参数对参量增益的影响及其与晶体饱和长度的关系。结果表明 :OPA具有传统啁啾脉冲放大 (CPA)系统所不具有的优点 ,将有可能取代传统的 CPA系统而作为超短超强激光系统的新型前端。Theoretical analysis and detailed numerical simulation on optical parametric chirped pulse amplification(OPCPA) are presented in this paper. The characters of optical gain and saturation amplification under different conditions of pumping beam and signal beam are obtained. The signal beam grows exponentially in weak signal regime until the is fully depleted, which shows good agreement with the analytical solution. We also find that the initial intensity of pump and signal have great effect on the gain of OPA. Therefore, the crystal length has to be carefully chosen once that the parameters of pump and signal are set. Also a design example of OPCPA and it's calculated result are given.

关 键 词：啁啾脉冲 光参量放大 增益 饱和放大 超短超强脉冲激光 

分 类 号：TN24[电子电信—物理电子学] TN722.32