Abstract
We report a high-efficiency continuously tunable single-frequency doubly resonant optical parametric oscillator (OPO) based on periodically poled KTiOPO4. Pumped by a frequency-doubled Nd:YLF laser at , the OPO has a low threshold of and can deliver up to single-frequency output at and single-frequency output at with of pump power. Coarse and continuous frequency tuning are also demonstrated experimentally.
© 2011 Optical Society of America
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