强激光与粒子束, 2011, 23 (2): 290, 网络出版: 2011-03-02
高效腔外频率变换紫外激光器
High efficiency extra-cavity frequency conversion UV laser
摘要
为了得到高效的腔外频率变换355 nm紫外激光输出, 提出了一种利用3块LBO作为非线性频率变换晶体的新方案。采用LD端面泵浦Nd: YAG声光Q开关激光器作为基波源, 当入射泵浦功率为25 W、调制频率12 kHz时, 获得了6.2 W的1 064 nm激光输出, 经过非线性频率变换后, 获得了2.7 W的紫外355 nm激光输出, 光-光转换率43.4%。
Abstract
High efficiency extra-cavity third harmonic generation(THG) of 355 nm beam has been developed. A laser diode(LD) end-pumped, acoustic-optical Q-switched Nd: YAG laser was used as the fundamental wave source. With an input pump power of 25 W, the average power of 6.2 W at 1 064 nm was generated with the repetition rate of 12 kHz. Using the extra-cavity frequency conversion of three critical phase match LiO3O5 (LBO) crystals, 2.7 W third harmonic radiation at 355 nm was obtained. The optical-to-optical (1 064 nm to 355 nm) conversion efficiency was up to 43.5%.
李斌, 姚建铨, 丁欣, 张帆, 王鹏. 高效腔外频率变换紫外激光器[J]. 强激光与粒子束, 2011, 23(2): 290. Li Bin, Yao Jianquan, Ding Xin, Zhang Fan, Wang Peng. High efficiency extra-cavity frequency conversion UV laser[J]. High Power Laser and Particle Beams, 2011, 23(2): 290.