Tj. Edwards et al., CONTINUOUS-WAVE SINGLY RESONANT OPTICAL PARAMETRIC OSCILLATOR BASED ON PERIODICALLY POLED RBTIOASO4, Optics letters, 23(11), 1998, pp. 837-839
We report a continuous-wave optical parametric oscillator (OPO) based
on periodically poled RbTiOAsO4 (PPRTA). The singly resonant OPO, whic
h is located within a Ti:sapphire laser, has a high-finesse signal cav
ity and delivers a maximum output power of 270 mW to the nonresonant i
dler wave at 2.92 mu m, through a 4.5-mm PPRTA crystal. For room-tempe
rature operation and a crystal with a 30-mu m grating period, pump tun
ing over 838-848 nm results in OPO turning over 1.13-1.27 mu m (signal
) and 2.53-3.26 mu m (idler), limited by the bandwidth of optical coat
ings. PPRTA exhibits thermal properties superior to those of periodica
lly poled LiNbO3. (C) 1998 Optical Society of America.