12 W Mid-Infrared Output, Singly Resonant,
Continuous-Wave Optical Parametric Oscillator
Pumped by a Yb³⁺-Doped Fiber Amplifier¹

L. Liu*, X. Li, H. Xiao, X. J. Xu, and Z. F. Jiang

College of Optoelectric Science and Engineering, National University of Defense Technology,
Changsha, Hunan, China 410073

*e-mail: llwm0319@163.com

Received July 10, 2011; in final form July 28, 2011; published online November 28, 2011

Abstract—We report a continuous-wave singly resonant optical parametric oscillator (SRO) with more than
12 W of idler power at 3414 nm when it was operated at 30C. The SRO was directly pumped by a single-fre-
quency, ytterbium-doped fiber laser with 49 W linear polarization pump powers, and based on 50 mm long peri-
odically poled MgO:LiNbO₃ crystal (PPMgLN) in two-mirror linear cavity with 30.5 m grating period. It’s
pump power at threshold was 5.4 W. The slope-efficiency and quantum-limited performance reached 26 and
79.2%, respectively. The beam polarization matched the e e + e interaction in crystal. The idler waves were
temperature tuned in the range of 3654 to 3811 nm and 3248 to 3414 nm based on two 50 mm long PPMgLN
with 29.5 and 30.5 m grating period. To the best of our knowledge, this is the highest continuous-wave mid-
IR output obtained for a fiber laser pumped optical parametric oscillator (OPO).

DOI: 10.1134/S1054660X12010124

Pleiades Publishing home page | journal home page | top

If you have any problems with this server, contact webmaster.