PERFORMANCE OF A DEGENERATE KTIOPO4 OPTICAL PARAMETRIC OSCILLATOR, SYNCHRONOUSLY PUMPED BY A MODE-LOCKED AND Q-SWITCHED ND-YAG CONTINUOUS-WAVE OSCILLATOR SLAB AMPLIFIER COMBINATION
Wt. Lotshaw et al., PERFORMANCE OF A DEGENERATE KTIOPO4 OPTICAL PARAMETRIC OSCILLATOR, SYNCHRONOUSLY PUMPED BY A MODE-LOCKED AND Q-SWITCHED ND-YAG CONTINUOUS-WAVE OSCILLATOR SLAB AMPLIFIER COMBINATION, Journal of the Optical Society of America. B, Optical physics, 10(11), 1993, pp. 2191-2194
We used a cw-pumped, Q-switched, and mode-locked Nd:YAG oscillator and
a cw-pumped, multipass traveling-wave amplifier with a face-pumped to
tal-internal-reflection Nd:YAG slab as the gain element to produce an
80-W, TEM00 diffraction-limited beam at a Q-switching rate of 10 kHz (
50 W at 3 kHz). The output of this device was used to synchronously pu
mp a degenerate optical parametric oscillator that utilized six KTiOPO
4 crystals as nonlinear converters. A maximum average power of 14 W at
2.128 mum was generated with a conversion efficiency of 25% at 4.25 k
Hz.