摘要
通过半导体激光二极管(LD)垂直阵列端面泵浦Nd:YAG晶体获得了高能量1064 nm调Q激光输出。根据LD波长随温度线性变化的物理特性,通过调节LD温度改变泵浦光波长,使其偏离Nd:YAG的吸收峰,降低了激光介质泵浦端面增益,有效抑制了制约调Q激光输出能量的自激振荡。在LD泵浦能量530 m J时,产生了95 m J的1064 nm激光输出,相应的光光转换效率为18%,调Q动静比为73%,激光脉宽8 ns,光束发散角为2.5 mrad.
A high energy 1064 nm Q-switched laser was obtained by end pumping Nd:YAG crystal with a vertical array of semiconductor laser diodes(LD).According to the physical characteristics of linear change of LD wavelength with temperature,the wavelength of pump light deviated from absorption peak of Nd:YAG by adjusting the temperature of LD,and the gain of pumping end of laser medium was reduced,which effectively suppressed the self-excited oscillation restricting the output energy of Q-switched laser.1064 nm laser with a maximum output of 95 m J was generated under pump energy of530 m J.The corresponding optical conversion efficiency was 18%and the Q-switching ratio of dynamic to static was 73%.The laser pulse width was 8 ns and divergence angle was 2.5 mrad.
作者
谢仕永
宋普光
王彩丽
王三昭
冯跃冲
张弦
刘娟
樊志恒
史小玄
薄铁柱
蔡华
Xie Shiyong;Song Puguang;Wang Caili;Wang Sanzhao;Feng Yuechong;Zhang Xian;Liu Juan;Fan Zhiheng;Shi Xiaoxuan;Bo Tiezhu;Cai Hua(China Building Materials Academy Co.,Ltd,Beijing 100024,China;Key Laboratory of China Building Materials Industry for Special Photoelectric Materials,Beijing 100024,China;CNBM Guangxin Technology Co.,Ltd,Zaozhuang 277101,China)
出处
《红外与激光工程》
EI
CSCD
北大核心
2020年第S02期163-168,共6页
Infrared and Laser Engineering
关键词
全固态激光器
端面泵浦
调Q
自激振荡
all solid state laser
end pumping
Q-switching
self-excited oscillation
