LD脉冲侧面泵浦Nd∶YAG电光调Q低重频窄脉宽紫外激光器

白杨; 刘沛沛; 沈兆国; 任兆玉; 白晋涛

光子学报, 2009, 38 (7): 1617, 网络出版: 2010-05-10

LD脉冲侧面泵浦Nd∶YAG电光调Q低重频窄脉宽紫外激光器

LD pulse Side-pumped E-O Q-switched Nd∶YAG UV Laser with Short Pulse Width at Low Repetition Rate

论文大纲

白杨 ^*刘沛沛沈兆国任兆玉白晋涛

作者单位

西北大学光子学与光子技术研究所，陕西省全固态激光及应用工程技术研究中心,西安 710069

半导体激光脉冲侧面泵浦四倍频窄脉宽高峰值功率紫外激光器 LD pulse side-pumped Fourth harmonic generation Narrow width High peak power Ultraviolet laser

摘要

介绍了在1~20 Hz电光调Q情况下，半导体脉冲激光侧面泵浦Nd∶YAG晶体腔外四倍频266 nm紫外激光器的输出特性.实验采用直腔结构，在腔外分别利用KTP和BBO晶体产生532 nm倍频绿光、266 nm四倍频紫外激光.当泵浦电流为120 A、重复率为1 Hz时，266 nm紫外激光最大单脉冲能量为15.4 mJ、脉宽8 ns，峰值功率高达1.93 mW；重复率20 Hz时，获得了最大平均功率为156.2 mW的266 nm紫外激光输出，四倍频的转换效率为10.63％.同时利用一组分光镜，获得了352 mW的532 nm脉冲绿光和423 mW的1 064 nm脉冲红外光输出.

Abstract

Using BBO single pass fourth harmonic generation,the characteristic of a pulsed laser diode (LD) side-pumped Nd∶YAG crystal electro-optic Q-switched with the repetition rate from 1 to 20 Hz ultraviolet laser at 266 nm was presented.In the experiment,a simple straight cavity adopted KTP and BBO crystal were used for the second-harmonic generation and the fourth-harmonic generation differently.When the incident pumping current being 120 A at the repetition rate of 1 Hz,the largest single pulse energy of 15.4 mJ with pulse duration of about 8 ns,corresponding to the peak power as high as 1.93 mW was obtained.At the repetition rate of 20 Hz under the same pumping current,the maximum average power of 156.2 mW,corresponding to a conversion of 10.63% from 1 064 nm to 266 nm.Meanwhile,532 nm and 1 064 nm laser output was obtained by using a volume of beam splitter mirrors and the output pulse power of them is 352 mW and 423 mW separately.

参考文献

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白杨, 刘沛沛, 沈兆国, 任兆玉, 白晋涛. LD脉冲侧面泵浦Nd∶YAG电光调Q低重频窄脉宽紫外激光器[J]. 光子学报, 2009, 38(7): 1617. BAI Yang, LIU Pei-pei, SHEN Zhao-guo, REN Zhao-yu, BAI Jin-tao. LD pulse Side-pumped E-O Q-switched Nd∶YAG UV Laser with Short Pulse Width at Low Repetition Rate[J]. ACTA PHOTONICA SINICA, 2009, 38(7): 1617.

LD脉冲侧面泵浦Nd∶YAG电光调Q低重频窄脉宽紫外激光器

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