Compact, continuous-wave, singly resonant optical parametric oscillator based on periodically poled RbTiOAsO4 in a Nd:YVO4 laser

We describe a compact all-solid-state continuous-wave, singly resonant optical parametric oscillator (SRO) based on periodically poled RbTiOAsO4. The SRO is pumped at 1.064 mum by a Nd:YVO4 laser, which is itself pumped by a 3-W diode laser. Using the intracavity technique produced an oscillation threshold for the SRO of only 1.6 W (diode-laser power). For 3 W of diode pump power some 65 mW was obtained in the (nonresonant) idler (wavelength 3.52 mum). Temperature tuning over the range 10-100 degreesC resulted in tuning ranges of 1.52-1.54 and 3.41-3.54 mum for the signal and the idler waves, respectively. Importantly, relaxation oscillations were absent. (C) 2003 Optical Society of America.