光子学报, 2005, 34 (9): 1289, 网络出版: 2006-06-12
LD泵浦Nd:YAG/Cr:YAG腔外频率变换高功率紫外激光器
LD-pumped Nd: YAG Outcavity Fourth Harmonic Generation High Power Ultraviolet Laser
紫外激光器 四倍频 腔型设计 被动调Q Ultraviolet laser Fourth harmonic generation DPSSL DPSSL Cavity design passively Q-switched
摘要
用KTP晶体对激光二极管端面泵浦的Nd:YAG晶体,Cr:YAG被动调Q产生的1064 nm脉冲激光器进行腔外倍频,用BBO晶体四倍频产生266 nm紫外激光.用15 W的LD阵列,当LD泵浦功率为12 W的情况下,红外(1064μm)调Q平均输出功率为2.2 W,脉冲序列周期为40μs,脉宽为18 ns,峰值功率高达4.9 kW.采用KTP腔外二倍频,532 nrm的绿光输出平均功率为850 mW;用BBO腔外四倍频,266 nm的紫外光输出平均功率高达215 mW,绿光-紫外光光转换效率为25.2%,红外到紫外总的转换效率为9.8%.
Abstract
A diode-pumped,Cr∶YAG passively Q-switched Nd∶YAG laser with an ultraviolet output at 266 nm is studied.Usinga LDA with 15 W,when the incident pump power was 12 W,the passively Q-switched average power infrared output power reached 2.2 W,and the period of the pulse was 40 μs,and the width of the pulse was 18 ns,and the peak power rose up to 4.9 kW.Taking KTP as the second harmonic generation crystal,532 nm green light average power was 850 mW;Taking BBO crystal for fourth harmonic generation outcavity,266 nm ultraviolet average output power was 215 mW,the efficiency of green to ultraviolet conversation was 25.2.%,and the efficiency of infared to ultraviolet conversation was 9.8%.
谭成桥, 薛庆华, 贾富强, 亓岩, 郑权, 钱龙生. LD泵浦Nd:YAG/Cr:YAG腔外频率变换高功率紫外激光器[J]. 光子学报, 2005, 34(9): 1289. 谭成桥, 薛庆华, 贾富强, 亓岩, 郑权, 钱龙生. LD-pumped Nd: YAG Outcavity Fourth Harmonic Generation High Power Ultraviolet Laser[J]. ACTA PHOTONICA SINICA, 2005, 34(9): 1289.