We report on what is believed to be the first singly resonant cw optical parametric oscillator (SRO) that is directly pumped by a diode laser. The SRO consists of a 38-mm-long periodically poled LiNbO<sub>3</sub> crystal in a four-mirror signal-resonant ring cavity. Pumped by 2.5 W of 925-nm diode-laser radiation, the SRO generates 480 mW of single-frequency idler radiation at 2.1μm . The wavelengths of the signal and the idler output are tuned in the ranges of 1.55 to 1.70μm and 2.03 to 2.29μm, respectively, by tuning the wavelength of the diode laser from 924.0 to 925.4 nm.
© 1999 Optical Society of America
(160.4330) Materials : Nonlinear optical materials
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
M. E. Klein, D.-H. Lee, J.-P. Meyn, K.-J. Boller, and R. Wallenstein, "Singly resonant continuous-wave optical parametric oscillator pumped by a diode laser," Opt. Lett. 24, 1142-1144 (1999)