High-efficiency mid-infrared optical parametric oscillator based on PPMgO:CLN.
The experimental results of a high-efficiency mid-IR laser are presented on a quasi-phase-matched single-resonated optical parametric oscillator in PPMgO:CLN pumped by a 1064 nm laser of an elliptical beam. The pump source was an acousto-optical Q-switched cw-diode-side-pumped Nd:YAG laser. The beam polarization matched the e-ee interaction in PPMgO:CLN. When the crystal was operated at 110 degrees C and the pump power was 104 W with a repetition rate of 7 kHz, average output powers of 16.7 W at 3.84 microm and 46 W at 1.47 microm were obtained. The slope efficiency of the 3.84 microm laser with respect to the pump laser was 19.1%. The M(2) factors of the 3.84 mum laser were 2.03 and 5.89 in the parallel and perpendicular directions, respectively.
Institute of Applied Electronics, China Academy of Engineering Physics, P.O. Box 919-1013, Mianyang Sichuan 621900, China. qiaopyf@yahoo.com.cn
Yuefeng
Y
Peng
Weimin
W
Wang
Xingbin
X
Wei
Deming
D
Li