基于WS_2可饱和吸收体的被动调Q Tm,Ho:LLF激光器  

WS_2 Saturable Absorber for Passively Q-Switched Tm,Ho:LLF Lasers

作　　者：令维军[1] 夏涛[1] 董忠[1] 路飞平[1] 刘勍[1] 赵小龙[1] 李可[1] 王勇刚[2] 

机构地区：[1]天水师范学院激光技术研究所,甘肃天水741000 [2]陕西师范大学物理学与信息技术学院,陕西西安710062

出　　处：《中国激光》2017年第7期209-213,共5页Chinese Journal of Lasers

基　　金：国家自然科学基金(61465012;61564008;61461046;61665010;61661046);瞬态光学与光子技术国家重点实验室开放基金(SKLST201307);天水师范学院重点学科项目(TSSY201505)

摘　　要：利用二维过渡金属材料WS_2作为2μm波段可饱和吸收体,采用典型的X型四镜腔结构,实现了Tm,Ho:LuLiF_4激光器低阈值被动调Q运转。实验结果表明,吸收功率为260mW时开始启动调Q运转,吸收抽运功率大于650mW时,调Q激光脉冲进入稳定运转。抽运功率为2000mW时,在中心波长1895nm波段输出功率为88mW,典型脉冲宽度为4μs,重复频率为16.89kHz,对应最大单脉冲能量为5.21μJ。结果表明,WS_2材料可以作为2μm固体激光器的可饱和吸收体。The WS2 is used as a saturable absorber in 2 μm band. A low-threshold passively Q-switched Tin, Ho.＇LuLiF4 laser with a typical X-type four-cavity structure is demonstrated. The experimental results show that the Q-switched operation starts at the absorbed pump power of 260 mW and becomes stable when it is over 650 mW. When the absorbed pump power is 2000 mW, the output power is 88 mW, corresponding to the typical pulse duration of 4 μs, the repetition frequency of 16.89 kHz, and the maximum single pulse energy of 5.21 /μJ. The results show that the WSz material can be used as a saturable absorber for passively Q-switched lasers in 2 μm band.

关 键 词：激光技术 WS2可饱和吸收体 被动调Q激光器 Tm Ho:LuLiF4激光器 低阈值激光器 

分 类 号：TN248.1[电子电信—物理电子学]