兼容多波长及多脉宽输出的频率转换系统设计  

Design of compatible harmonic generation system for multi wavelength and multiple pulse-width laser output

作　　者：王芳[1] 李富全[1] 贾怀庭[1] 周丽丹[1] 王礼权[1] 冯斌[1] 谢旭东[1] 朱启华[1] 张崑[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》2015年第3期157-161,共5页High Power Laser and Particle Beams

摘　　要：通过对多种频率转换方案的深入对比分析,设计了一套兼容多波长及多脉宽高效输出的频率转换系统。采用"Ⅱ+Ⅱ"类双晶体级联的方式,可以实现"偏振失配"三倍频和Ⅱ类双晶体正交级联二倍频两种模式间的快速切换。通过数值模拟程序优化了晶体构型,结果表明,当两块晶体厚度均为10mm时,可以兼顾低功率长脉冲和高功率短脉冲对效率和稳定性的需求。By comparing and analyzing various frequency conversion schemes,a compatible harmonic generation system has been designed.With type-Ⅱ-type-Ⅱcrystal combination configuration,polarization mismatch third harmonic generation and type-Ⅱ orthogonal quadrate second harmonic generation can be quickly switched.The thicknesses were optimized to be 10 mm for both crystals by numerical simulation method,as a result,the requirements of high efficiency for long pulse with low intensity,as well as high stability for short pulse with high intensity,can be satisfied.

关 键 词：多波长 多脉宽 正交级联二倍频 偏振失配三倍频 

分 类 号：TN241[电子电信—物理电子学]