基于LiB_3O_5晶体腔内倍频的126 W高稳定性532 nm声光调Q激光器  

126 W High-Stability Acousto-Optical Q-Switched 532 nm Laser Based on LiB_3O_5 Crystal Intracavity Frequency-Doubling

作　　者：周旭阳 王劲松[1] 梁旭 萧云峰 黄国林 Zhou Xuyang;Wang Jinsong;Liang Xu;Xiao Yunfeng;Huang Guolin(College of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun, Jilin 130022, China)

机构地区：[1]长春理工大学光电工程学院,吉林长春130022

出　　处：《激光与光电子学进展》2018年第5期247-253,共7页Laser & Optoelectronics Progress

基　　金：国家中小企业科技创新基金(110262122005651)

摘　　要：基于Ⅱ类相位匹配LiB3O5(LBO)晶体腔内倍频技术,获得了一种高稳定性532nm Nd…YAG声光调Q激光器。当声光调Q激光器的重复频率为12kHz时,可实现平均功率为126 W的绿光激光输出。通过测量可得,其脉冲宽度为52ns,脉冲能量为10.5mJ,峰值功率为205.9kW,且808nm的激光二极管光功率到532nm绿光的转换效率为9.19%。LBO晶体由控温炉精确控温,温度控制在±0.1℃以内,有利于高效率、高稳定二次谐波的产生。由实验结果可得,绿色激光器的输出功率稳定性较好,126 W的532nm绿光激光器连续工作3h的均方根不稳定性为±0.628%。A highly stable acousto-optical Q-switched 532 nm Nd：YAG laser based on a type II LiB3 O5 （LBO） crystal intracavity frequency-doubling is demonstrated. Average output power of 126 W of green laser is obtained at a repetition rate of 12 kHz for acousto-optical Q-switched laser. Test results show that the pulse width is 52 ns, which corresponds to a pulse energy of 10. 5 mJ and a peak power of 205. 9 kW. The diode-to-green optical conversion efficiency from 808 nm to 532 nm is 9.19 %. The LBO crystal＇s temperature is precisely controlled by a temperature control furnace with the precision of ± 0.1 ℃, which directly contributes to the high efficiency high- stability second harmonic generation. The output power of the green laser is very stable. The root mean square instability of green laser at 126 W is calculated to be ±0. 628% in 3 h of continuous work.

关 键 词：激光器 声光调Q 腔内倍频 二次谐波产生器 

分 类 号：TN248[电子电信—物理电子学]