Doubly resonant continuous-wave optical parametric oscillator pumped by a single-mode diode laser

The performance characteristics of a doubly (signal and idler) resonant con tinuous-wave optical parametric oscillator based on periodically poled lith ium niobate and pumped by a 100-mW single-mode laser diode at 810 nm are re ported. Pump power thresholds as low as 16 mW and wavelength tuning over th e range 1.15-1.25 mu m at the signal and 2.31-2.66 mu m at the idler were a chieved through variation of crystal temperature, pump wavelength, and grat ing period. Up to 5 mW of signal output was obtained with the single-mode d iode pump, and signal powers of up to 39 mW were obtained when pumping with a 400-mW injection-locked broad-area diode laser. (C) 1998 Optical Society of America.