基于无水乙醇冷却的Yb:YAG片状晶体激光放大特性研究  

Amplification Characteristic of Low Temperature Yb:YAG Crystal Disc Cooled by Alcohol

作　　者：张振华[1] 程小劲[1] 王建磊[1] 李磊[1] 杨中国[1] 施翔春[1] 陈卫标[1] 

机构地区：[1]中国科学院上海光学精密机械研究所上海市全固态激光器与应用技术重点实验室,上海201800

出　　处：《中国激光》2011年第7期74-78,共5页Chinese Journal of Lasers

摘　　要：采用无水乙醇低温冷却Yb:YAG片状放大器结构,验证温度对准三能级结构Yb:YAG晶体自吸收的影响。详细研究了放大器在不同条件下的放大性能。在光抽运能量为2.17 J时,单通双程的小信号增益在低温(213 K)下可达3倍;采用双通四程放大结构,小信号增益提高到9倍,获得了单脉冲能量60 mJ的信号光输出。We describe a low temperature Yb：YAG crystal disc laser amplifier cooled by alcohol and stuided detailed the re-absorption of Yb：YAG crystal at different temperatures.The amplifier′s characteristic has a decided change with different temperatures.For double-pass amplifier,the small signal gain of 3 is obtained at the temperature of 213 K when the pump energy is 2.17 J.For four-pass amplifier,the output energy of 60 mJ per pulse is obtained,corresponding to a small signal gain of 9.

关 键 词：激光放大器 YB:YAG晶体 无水乙醇低温冷却 双通放大器 

分 类 号：TN248.1[电子电信—物理电子学]