Chinese Optics Letters, 2011, 9 (6): 061403, Published Online: Apr. 28, 2011
Mid-infrared optical parametric oscillator based on ZnGeP2 pumped by 2- \mum laser Download: 1054次
可调谐激光器 光参量振荡器 ZGP晶体 中红外 140.3070 Infrared and far-infrared lasers 140.3580 Lasers, solid-state 140.3600 Lasers, tunable 190.4970 Parametric oscillators and amplifiers
Abstract
We present a 3~5 \mum optical parametric oscillator (OPO) based on ZGP pumped by KTP OPO 2.1-\mum laser. The tuning curves of ZGP OPO are calculated. The 8 \times 6 \times 18 (mm) ZGP crystal, whose end faces are antireflection coated at 2.1 and 3.7~4.6 \mum, is cut as \theta =53.5o, \phi =0o. When the pump power of 2.1-\mu m polarized laser is 15 W at 8 kHz, 5.7-W output power and 46.6% slope efficiency are obtained with a ZGPtype I phase match. Central wavelengths of the signal and idler lasers are 4.10 and 4.32 μm, respectively. Pulse duration is about 27 ns. Beam quality factor M2 is better than 1.8. The tunability of 3~5 \mu m can be achieved by changing the angle of the ZGP crystal.
Yuefeng Peng, Xingbin Wei, Weimin Wang. Mid-infrared optical parametric oscillator based on ZnGeP2 pumped by 2- \mum laser[J]. Chinese Optics Letters, 2011, 9(6): 061403.