强激光与粒子束, 2015, 27 (3): 032018, 网络出版: 2015-03-23   

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
作者单位
中国工程物理研究院 激光聚变研究中心, 四川 绵阳 621900
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10 mm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。
Abstract
By comparing and analyzing various frequency conversion schemes, a compatible harmonic generation system has been designed. With type-Ⅱ-type-Ⅱ crystal 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.
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王芳, 李富全, 贾怀庭, 周丽丹, 王礼权, 冯斌, 谢旭东, 朱启华, 张崑. 兼容多波长及多脉宽输出的频率转换系统设计[J]. 强激光与粒子束, 2015, 27(3): 032018. Wang Fang, Li Fuquan, Jia Huaiting, Zhou Lidan, Wang Liquan, Feng Bin, Xie Xudong, Zhu Qihua, Zhang Kun. Design of compatible harmonic generation system for multi wavelength and multiple pulse-width laser output[J]. High Power Laser and Particle Beams, 2015, 27(3): 032018.

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