We describe a cw optical parametric oscillator (OPO) with multigrating periodically poled LiTaO<sub>3</sub> . Pumped by a single-frequency 532-nm laser, the OPO emits single-frequency radiation at wavelengths from 0.77 to 1.73μm with as much as 60 mW of output power. Mode-hop-free operation for as long as 50 min, a low frequency drift (<70MHz/h), and as much as 700-MHz continuous frequency tuning of signal and idler are demonstrated.
© 1999 Optical Society of America
(160.4330) Materials : Nonlinear optical materials
(190.4360) Nonlinear optics : Nonlinear optics, devices
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
U. Strössner, A. Peters, J. Mlynek, S. Schiller, J.-P. Meyn, and R. Wallenstein, "Single-frequency continuous-wave radiation from 0.77 to 1.73 μm generated by a green-pumped optical parametric oscillator with periodically poled LiTaO3," Opt. Lett. 24, 1602-1604 (1999)