Over 3.5 W of continuous-wave power at 3.4 μm was obtained by single-pass difference frequency mixing of 1.064 and 1.55 μm fiber lasers in a 5 cm long periodically poled lithium niobate crystal. Good agreement was obtained between the observed temperature dependence of the generated power and the prediction from focused Gaussian beam theory.
© 2014 Optical Society of America
Lasers and Laser Optics
Original Manuscript: June 26, 2014
Manuscript Accepted: July 15, 2014
Published: August 19, 2014
Shekhar Guha, Jacob O. Barnes, and Leonel P. Gonzalez, "Multiwatt-level continuous-wave midwave infrared generation using difference frequency mixing in periodically poled MgO-doped lithium niobate," Opt. Lett. 39, 5018-5021 (2014)