The continuous-wave high power laser emission of Nd:GdVO4 at the fundamental wavelength of 1.06 mm and its 531-nm second-harmonic obtained by intracavity frequency-doubling with a LBO nonlinear crystal is investigated under pumping by diode laser on the 4I9/2→4F5/2 transition, at 808 nm, and on the 4I9/2→4F3/2 transition, at 879 nm. 5.1 W at 531 nm with overall optical-to-optical efficiency of 0.31 was obtained from a 3-mm-thick 1.0-at.% Nd:GdVO4 laser medium and a 10-mm-long LBO nonlinear crystal. A careful alignment of the laser enables emission almost free of chaotic intensity fluctuations.

© 2005 Optical Society of America

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