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

Mid-infrared ZnGeP₂ parametric oscillator directly pumped by a pulsed 2 μm Tm-doped fiber laser

Daniel Creeden, Peter A. Ketteridge, Peter A. Budni, Scott D. Setzler, York E. Young, John C. McCarthy, Kevin Zawilski, Peter G. Schunemann, Thomas M. Pollak, Evan P. Chicklis, and Min Jiang
Opt. Lett. 33(4) 315-317 (2008)

Efficient mid-infrared laser using 1.9-µm-pumped Ho:YAG and ZnGeP₂ optical parametric oscillators

P. A. Budni, L. A. Pomeranz, M. L. Lemons, C. A. Miller, J. R. Mosto, and E. P. Chicklis
J. Opt. Soc. Am. B 17(5) 723-728 (2000)

High-efficiency mid-infrared ZnGeP₂ optical parametric oscillator in a multimode-pumped tandem optical parametric oscillator

Poh Boon Phua, Kin Seng Lai, Rui Fen Wu, and Tow Chong Chong
Appl. Opt. 38(3) 563-565 (1999)

A 41-W ZnGeP₂ optical parametric oscillator pumped by a Q-switched Ho:YAG laser

Bao-Quan Yao, Ying-Jie Shen, Xiao-Ming Duan, Tong-Yu Dai, You-Lun Ju, and Yue-Zhu Wang
Opt. Lett. 39(23) 6589-6592 (2014)

High peak-power mid-infrared ZnGeP₂ optical parametric oscillator pumped by a Tm:fiber master oscillator power amplifier system

Martin Gebhardt, Christian Gaida, Pankaj Kadwani, Alex Sincore, Nils Gehlich, Cheonha Jeon, Lawrence Shah, and Martin Richardson
Opt. Lett. 39(5) 1212-1215 (2014)