Infrared and Laser Engineering, Volume. 48, Issue 4, 405006(2019)
109.5 W output 1.94 micron Tm:YAP solid-state laser
A high power Tm:YAP laser device was reported. The laser gain medium was b-axis-cut YAP/Tm:YAP/YAP composite crystal rod. By using a LD module with a center wavelength of 795 nm for double-end pumping, when the temperature of the cooling water was set at 20 ℃, and the total pump power was 301.4 W, the linear polarized laser output of 1.94 μm with a maximum of 109.5 W was obtained. The optical-to-optical conversion efficiency was up to 36.3% and the slope efficiency was about 45.8%, the measured beam quality of M2 factor was 3.8 at the highest output power condition.
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Yuan Ligang, Zhou Shouhuan, Zhao Hong, Chen Guo, Wei Lei, Li Bao, Wang Keqiang. 109.5 W output 1.94 micron Tm:YAP solid-state laser[J]. Infrared and Laser Engineering, 2019, 48(4): 405006
Received: Feb. 13, 2019
Accepted: Feb. 25, 2019
Published Online: Jul. 23, 2019
The Author Email: Ligang Yuan (greenlaser@sina.com)