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83% net efficiency in generating 700 mW of cw blue by IR diode laser doubling with PPKTP

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We report on high efficiency resonant doubling at 486nm using periodically poled KTP. A stable blue power of 700 ± 5 mW was obtained using the 840 mW output power of a FBG stabilized PM fiber coupled IR semiconductor laser. This gives an overall conversion efficiency of 83%. To obtain this result, all losses in the system were carefully studied and minimized.

© 2010 Optical Society of America

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