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低温液冷块状Yb∶YAG激光放大器

Cryogenic Liquid-Cooled Yb∶YAG Bulk Amplifier

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摘要

针对高功率激光的应用需求,提出一种新构型的低温激光放大器方案,采用低温液体侧面冷却三角形沟槽设计的块状Yb∶YAG晶体,抑制了介质内寄生振荡,改善了热管理效果,实现了放大器高效储能与提取,获得了能量为9.4 J、脉冲宽度为10 ns、重复频率为5 Hz、远场3.3倍衍射极限的激光输出,为后续更大能量的Yb∶YAG激光放大器设计提供了有益的参考。

Abstract

An innovative laser amplifier architecture based on cryogenically cooled Yb∶YAG bulk is developed for high-power laser application. The Yb∶YAG bulk with triangular-section channels on the side is cooled using a cryogenic liquid to suppress parasitic oscillation in the medium and improve heat management. This architecture realizes high-efficiency energy storage and extraction of the amplifier, and a laser output with energy of 9.4 J, pulse width of 10 ns, repetition frequency of 5 Hz, diffraction limit far field of 3.3 is obtained, when high energy storage and extraction efficiency of the amplifier are realized. It provides a useful reference for the subsequent design of Yb∶YAG laser amplifier with large energy.

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DOI:10.3788/CJL201946.0901008

所属栏目:激光器件与激光物理

基金项目:中物院高能激光科学与技术重点实验室基金;

收稿日期:2019-04-09

修改稿日期:2019-05-14

网络出版日期:2019-09-01

作者单位    点击查看

严雄伟:中国工程物理研究院激光聚变研究中心, 四川 绵阳 621900
蒋新颖:中国工程物理研究院激光聚变研究中心, 四川 绵阳 621900
王振国:中国工程物理研究院激光聚变研究中心, 四川 绵阳 621900
郑建刚:中国工程物理研究院激光聚变研究中心, 四川 绵阳 621900IFSA协同创新中心, 四川 绵阳 621900
李敏:中国工程物理研究院激光聚变研究中心, 四川 绵阳 621900
肖凯博:中国工程物理研究院激光聚变研究中心, 四川 绵阳 621900

联系人作者:郑建刚(zjg8861@gmail.com)

备注:中物院高能激光科学与技术重点实验室基金;

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引用该论文

Xiongwei Yan,Xingying Jiang,Zhenguo Wang,Jiangang Zheng,Min Li,Kaibo Xiao. Cryogenic Liquid-Cooled Yb∶YAG Bulk Amplifier[J]. Chinese Journal of Lasers, 2019, 46(9): 0901008

严雄伟,蒋新颖,王振国,郑建刚,李敏,肖凯博. 低温液冷块状Yb∶YAG激光放大器[J]. 中国激光, 2019, 46(9): 0901008

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