基于多程腔技术的长纳秒脉冲532nm Nd:YAG调Q绿光激光器  

Nanosecond Pulse Width Stretched Q-Switched Nd:YAG Green Lasers Based on a Multipass Cavity

作　　者：宋艳洁 宗楠[1] 刘可[1] 涂伟[1] 杨峰[1] 卞奇 申玉[1] 王志敏[1] 薄勇[1,2] 彭钦军[1,2] 许祖彦[1,2] Song Yanjie;Zong Nan;Liu Ke;Tu Wei;Yang Feng;Bian Qi;Shen Yu;Wang Zhimin;Bo Yong;Peng Qinjun;Xu Zuyan(Key Laboratory of Solid State Laser Technical Institute of Physics and Chemistry Chinese Academy of Sciences,Beijing 100190,China;Key Laboratory of Function Crystal and Laser Technology Technical Institute of Physics and Chemistry Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院理化技术研究所固体激光重点实验室,北京100190 [2]中国科学院理化技术研究所功能晶体与激光技术重点实验室,北京100190 [3]中国科学院大学,北京100049

出　　处：《中国激光》2020年第12期14-19,共6页Chinese Journal of Lasers

基　　金：国家自然科学基金(61805259);国家重点研发计划(2016YFB0402103);中科院关键技术团队项目(GJJSTD20180004);中科院理化技术研究所所长基金(Y8A9021H11)。

摘　　要：自行研制出一种基于多程腔(MPC)技术的长纳秒脉冲532 nm Nd:YAG调Q激光器。在重复频率为10 kHz时,采用MPC技术,将激光脉冲宽度从可调范围110~260 ns扩展到460~600 ns。在最短脉冲宽度为460 ns时,532 nm激光的输出功率为6.5 W。理论模拟了532 nm激光输出功率和脉冲宽度随基频激光功率的变化曲线,理论值与实验数据较好地吻合。这种长纳秒脉冲532 nm绿光激光器对于工业和科学研究具有重要意义,如一些新材料的激光损伤特性研究。We have developed a nanosecond pulse width Q-switched stretched 532-nm Nd:YAG green laser based on a multipass cavity(MPC). The pulse widths were stretched from an adjustable regime of 110--260 ns to 460--600 ns by changing from single-pass to multipass operation at a pulse repetition rate of 10 kHz. At a typical pulse width of 460 ns, an average output power of 6.5 W at 532 nm was successfully achieved. The 532 nm output power and pulse width versus input power at 1064 nm were simulated. The simulated results were shown to be consistent with experimental data. Such nanosecond pulse lasers are interesting for both industrial and scientific applications, such as laser damage experiments for the development of new materials.

关 键 词：激光器 ND:YAG 多程腔 长纳秒脉冲 

分 类 号：TN248.1[电子电信—物理电子学]