A high-power picosecond optical parametric oscillator (OPO) based on a 47-mm periodically poled lithium niobate crystal is described. More than 12 W of total average power—almost 8 W of signal power at 1.85 µm and more than 4 W of idler radiation at 2.5 µm —is simultaneously extracted from less than 18 W of average pump power. The OPO is synchronously pumped by 80-ps (FWHM) cw mode-locked pulses at 1.064 µm , and its output is tunable from 1.7 to 2.84µm . Nearly transform-limited signal pulses are obtained following the introduction of two intracavity etalons.
© 2002 Optical Society of America
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4360) Nonlinear optics : Nonlinear optics, devices
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
C. W. Hoyt, M. Sheik-Bahae, and M. Ebrahimzadeh, "High-power picosecond optical parametric oscillator based on periodically poled lithium niobate," Opt. Lett. 27, 1543-1545 (2002)