Abstract

We report a pulsed intracavity sum-frequency generator in a diode-pumped, dual-wavelength Nd:YVO4 laser whose operation was optimized with two electro-optic Q switches built in a monolithic periodically poled lithium niobate (PPLN) crystal. The dual PPLN Q switches, though integrated, are able to work separately at their respective working wavelengths of 1064 and 1342nm. At 4.8W diode pump power and 5kHzQ-switching rate, a maximum orange (593nm) output peak power of >480W was achieved in this laser system using the Q-switch opening-time offset technique. This power is ~1.7 times higher than that obtained with the system operated in a conventional single-Q-switch mode.

© 2010 Optical Society of America

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