Abstract
We report on what are, to our knowledge, the best results obtained with an orientation-patterned GaAs optical parametric oscillator (OPO) pumped by a Q-switched Ho:YAG laser. Up to are obtained for of pump power, corresponding to an optical-to-optical conversion efficiency of 46.5% with a threshold of . Optical damage occurred at a fluence of about . The thickness of the crystal limited the pump power. Slope efficiencies are of the same order as those obtained with OPOs pumped with the same Ho:YAG laser.
© 2009 Optical Society of America
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