We present a novel technique for tuning an optical parametric oscillator (OPO) through electro-optically induced shape variations of the parametric gain spectrum in quasi-phase-matched lithium niobate (LN). The diode-pumped, triply resonant continuous-wave OPO is based on a 58-mm-long LN crystal that consists of three equally long sections, the outer sections being periodically poled with a 50% duty cycle. The center section is single-domain material and serves as a tunable phase shifter through the electro-optic effect. By application of a voltage of up to 1230 V, the OPO signal and idler wavelengths are tuned over 102 nm from 1560 to 1660 nm, in good agreement with theory.
© 2002 Optical Society of America
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4360) Nonlinear optics : Nonlinear optics, devices
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(230.2090) Optical devices : Electro-optical devices
P. Gross, M. E. Klein, H. Ridderbusch, D.-H. Lee, J.-P. Meyn, R. Wallenstein, and K.-J. Boller, "Wide wavelength tuning of an optical parametric oscillator through electro-optic shaping of the gain spectrum," Opt. Lett. 27, 1433-1435 (2002)