Compact Q-switched Tm:YLF laser with high slope efficiency, high power stability and high beam quality

被引：2
作者：
Wei, Xingbin [1 ]
Liu, Zhengyi [1 ,2 ]
Zhang, Song [1 ,2 ]
Ye, Xianlin [1 ,3 ]
Ren, Huaijin [1 ]
Wang, Weimin [1 ]
Wu, Yingchen [1 ]
Li, Mi [1 ]
机构：
[1] China Acad Engn Phys, Inst Appl Elect, Key Lab Sci & Technol High Energy Laser, Mianyang 621900, Peoples R China
[2] China Acad Engn Phys, Grad Sch, Beijing 100088, Peoples R China
[3] Sichuan Univ, Coll Elect & Informat Engn, Chengdu 610064, Peoples R China
来源：
INFRARED PHYSICS & TECHNOLOGY | 2023年 / 133卷
基金：
中国国家自然科学基金;
关键词：
Tm; YLF; Diode pumped lasers; Q -switched lasers; Mid -infrared lasers; DIODE-PUMPED TM3+; RAMAN LASER; FIBER LASER; PEAK POWER; TM/YLF; PERFORMANCE; WAVELENGTH; CW;
D O I：
10.1016/j.infrared.2023.104834
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
This paper presents a high-efficiency and actively Q-switched Tm:YLF laser with a compact design by arranging the optical elements closest to each other in a linear cavity. With a flat output coupler (OC), slope efficiency of 74.7% and output power of 12.41 W were achieved in continuous-wave operation. Using a volume Bragg grating (VBG) as the OC and wavelength selector, the output power and slope efficiency of the 1.908 & mu;m laser were 10.65 W and 67.3%, respectively. The corresponding beam quality M2 was about 1.5 at the maximum power. The Tm:YLF laser with VBG revealed high stability with a power fluctuation of 0.45% and central wavelength variation of 0.23 nm for one-hour continuous testing. In pulsed operation at 10 kHz, average power of 10.07 W and slope efficiency of 66.0% were obtained. This actively Q-switched Tm:YLF laser of 10-W level will be an ideal pump source for compact and high-efficiency mid-infrared optical parametrical oscillators for practical applications.
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页数：7
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