高重复频率窄脉宽电光调Q Nd:YVO<sub>4</sub>激光器

王旭; 孙哲; 程光华

doi:doi:10.3788/cjl201643.0601007

中国激光, 2016, 43 (6): 0601007, 网络出版: 2016-06-06

高重复频率窄脉宽电光调Q Nd:YVO₄激光器下载： 515次

High Repetition Rate and Short Pulse Width Electro-Optic Q-Switched Nd:YVO₄ Laser

论文大纲

王旭 ^1,2,*孙哲 ¹程光华 ¹

作者单位

¹ 中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室, 陕西西安 710119

² 中国科学院大学, 北京 100049

激光器电光调Q 电光偏转器窄脉宽高重复频率 lasers electro-optic Q-switch electro-optic deflector short pulse width high repetition rate

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摘要

采用磷酸钛氧铷（RTP）电光偏转器作为调Q开关，实现了连续激光二极管（LD）端面抽运Nd:YVO4的激光调Q运转。实验研究了输出耦合镜透射率不同、重复频率不同时激光器调Q的输出特性。当输出耦合镜透射率为60%，在5 kHz重复频率运转时，获得了平均输出功率为1.22 W、脉冲宽度为1.0 ns、峰值功率为244 kW的调Q脉冲输出；当重复频率为20 kHz时，得到的平均输出功率为2.67 W，脉冲宽度为2.2 ns，峰值功率为60.7 kW，对应斜率效率为37%，光束质量因子M2x= 1.226，M2y=1.229。并使用磷酸钛氧钾（KTP）晶体对激光器输出的1064 nm激光进行了腔外倍频，获得了重复频率为20 kHz、平均输出功率为1.33 W的532 nm绿光输出，倍频效率为50%。

Abstract

Using the rubidium oxygen titanium phosphate (RTP) electro-optic deflector as a Q-switch, we realize a continuous wave LD-pumped Q-switched Nd:YVO4 laser and study the output characteristics in experiments at different output coupling rates and different repetition rates. An output pulse train of 1.22 W average output power with pulse width of 1.0 ns and peak power of 224 kW is obtained at the repetition rate of 5 kHz and an output coupler with transmittance of 60%. Another out pulse of 2.67 W average output power with pulse width of 2.2 ns and peak power of 60.7 kW is obtained when the repetition rate is 20 kHz, the slope efficiency is 37%, and the beam quality factors are M2x=1.226, M2y=1.229. Further, by extra-cavity double-frequency based on a potassium titanium oxide phosphate (KTP) crystal, a green laser at 532 nm with repetition rate of 20 kHz and average output power of 1.33 W is obtained, and the corresponding frequency-doubling efficiency is 50%.

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王旭, 孙哲, 程光华. 高重复频率窄脉宽电光调Q Nd:YVO₄激光器[J]. 中国激光, 2016, 43(6): 0601007. Wang Xu, Sun Zhe, Cheng Guanghua. High Repetition Rate and Short Pulse Width Electro-Optic Q-Switched Nd:YVO₄ Laser[J]. Chinese Journal of Lasers, 2016, 43(6): 0601007.

高重复频率窄脉宽电光调Q Nd:YVO₄激光器下载： 515次

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