Abstract
We describe a cw optical parametric oscillator (OPO) with multigrating periodically poled . Pumped by a single-frequency 532-nm laser, the OPO emits single-frequency radiation at wavelengths from 0.77 to with as much as 60 mW of output power. Mode-hop-free operation for as long as 50 min, a low frequency drift , and as much as 700-MHz continuous frequency tuning of signal and idler are demonstrated.
© 1999 Optical Society of America
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