Abstract
An ultracompact, actively -switched optical parametric oscillator (OPO) has been realized that is only 30 mm in length, based on a semimonolithic microchip laser, a quadrupole deflector, and a monolithic periodically poled lithium niobate crystal. The OPO threshold was 550 mW when Nd:YAG was used as the gain material and 590 mW for , giving signal pulses of as much as in energy with Nd:YAG at 1 kHz and pulses with at 5 kHz, for 1.2- and 2-W laser diode pumping, respectively. The output was single frequency and could be tuned over the range 1540–3440 nm.
© 1999 Optical Society of America
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