High average power passively Q-switched Yb:YAG micro-laser

被引：1
|
作者：
McIntosh, Chris [1 ]
Hays, A. D. [1 ]
Chinn, Stephen R. [2 ]
Goldberg, Lew [1 ]
Leach, Jeffrey [1 ]
机构：
[1] US Army Combat Capabil Dev Command DEVCOM, C5ISR Ctr, Night Vis & Elect Sensors Directorate, Ft Belvoir, VA 22060 USA
[2] Fibertek Inc, 13605 Dulles Technol Dr, Herndon, VA 20171 USA
来源：
SOLID STATE LASERS XXIX: TECHNOLOGY AND DEVICES | 2020年 / 11259卷
关键词：
Q-switch; passively Q-switched; Cr:YAG; ytterbium doped yttrium aluminum garnet; Yb:YAG; saturable absorber; MW PEAK POWER; NM;
D O I：
10.1117/12.2546693
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We demonstrate operation of a compact, passively Q-switched Yb:YAG laser producing 10W average power at 1030nm in an 8.5kHz train of 1.2mJ, 1.6ns pulses. The laser is cw end-pumped with a fiber-coupled wavelength-stabilized 940nm diode. The pump light from the 105 mu m diameter (0.1 NA) pigtail is collimated using a short focal length lens and directed into a 3mm long, 1mm thick 10 at.% Yb:YAG crystal. The saturable absorber is a Cr4+ :YAG crystal with 76% unsaturated transmission. The laser's slope efficiency is 52% and the optical-to-optical conversion efficiency is 33% at a pump power of 30W.
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页数：7
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