Mid-infrared optical parametric oscillator based on ZnGeP2 pumped by 2- μm laser
Chinese Optics Letters, Vol. 9, Issue 6, pp. 061403- (2011)
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Abstract
We present a 3~5 μm optical parametric oscillator (OPO) based on ZGP pumped by KTP OPO 2.1-μm laser. The tuning curves of ZGP OPO are calculated. The x 6 x 18 (mm) ZGP crystal, whose end faces are antireflection coated at 2.1 and 3.7~4.6 μm, is cut as Θ =53.5o, Φ =0o. When the pump power of 2.1-μm 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 μm can be achieved by changing the angle of the ZGP crystal.
© 2011 Chinese Optics Letters
OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.3600) Lasers and laser optics : Lasers, tunable
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
Citation
Yuefeng Peng, Xingbin Wei, and Weimin Wang, "Mid-infrared optical parametric oscillator based on ZnGeP2 pumped by 2- μm
laser," Chin. Opt. Lett. 9, 061403- (2011)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-9-6-061403
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