400 mm口径片状放大器JG2钕玻璃增益与激光输出性能实验研究  

Gain and laser output performance of JG2 Nd:glass in 400 mm aperture slab amplifier

作　　者：陈林 吴文龙[2] 赵军普[2] 王振国[2] 柳强[1] Chen Lin;Wu Wenlong;Zhao Junpu;Wang Zhenguo;Liu Qiang(Department of Precision Instruments,Tsinghua University,Beijing 100084,China;Research Center of Laser Fusion,Chinese Academy of Engineering and Physics,Mianyang 621900,China)

机构地区：[1]清华大学精密仪器系,北京100084 [2]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《红外与激光工程》2021年第10期101-106,共6页Infrared and Laser Engineering

摘　　要：介绍了用于惯性约束聚变研究高功率激光驱动装置400 mm口径片状放大器系统的JG2钕玻璃片激光增益与激光输出性能等实验研究结果。利用一组三片长的400 mm口径4×2组合式片状放大器系统开展的增益性能实验结果表明,系统工作电压31 kV时小信号净增益系数达到5.37%/cm,小信号增益倍数为1.284倍/片/程,发次运行完成后利用0.3 m/s的洁净干燥气体进行冷却,热恢复时间约为2 h;利用大口径高通量验证实验平台开展的实验结果表明,基于JG2与N41钕玻璃片的优化组合使用最高输出能量达到21.3 kJ/1053 nm,目前已稳定运行500余发,未出现包边胶层异常与材料体损伤等故障。The experiment result of gain performance of JG2 Nd:glass and the output of whole furniture was introduced which would be applied in 400 mm aperture slab amplifiers from high power inertial confinement fusion laser equipment.A 4×2 combined slab amplifier system of three-pieces-length and 400 mm-aperture was used to study the gain function.The gain and output experiment results of JG2 Nd:glass show that the small signal gain coefficient reaches 5.37%/cm,and the gain multiple of small signal is 1.284 times/pass when the system operating voltage is 31 kV.The thermal recovery time is about 2 h after cooling with clean and dry gas at a velocity of 0.3 m/s.Besides,experimental results acquired by Integration-Test-Bed(ITB)laser facility show that the optimal combination of JG2 and N41 Nd:glass reaches the maximum output energy of 21.3 kJ/1053 nm,and has been operated stably for more than 500 shots,without any faults such as abnormal cladding layer and material body damage.

关 键 词：400mm口径片状放大器 小信号增益系数 激光输出能力 实验研究 

分 类 号：TN244[电子电信—物理电子学] TN248.1