Abstract

The laser performances of the 1.06μm F3/24I11/24 four-level transition and of the 0.9μm F3/24I9/24 quasi-three-level transition were investigated using multipass pumped Nd-based media in thin-disk geometry. When pumping at 0.81μm into the F5/24 level, continuous-wave laser operation was obtained with powers in excess of 10  W at 1.06μm, in the multiwatt region at 0.91μm in Nd:YVO4 and Nd:GdVO4, and at 0.95μm in Nd:YAG. Intracavity frequency-doubled Nd:YVO4 thin-disk lasers with output powers of 6.4  W at 532  nm and of 1.6  W at 457  nm were realized at this pumping wavelength. The pumping at 0.88μm, which is directed into the F3/24 emitting level, was also employed, and Nd:YVO4 and Nd:GdVO4 thin-disk lasers with 9  W output power at 1.06μm and visible laser radiation at 0.53μm with output power in excess of 4 W were realized. Frequency-doubled Nd:vanadate thin-disk lasers with deep blue emission at 0.46μm were obtained under pumping directly into the F3/24 emitting level.

© 2007 Optical Society of America

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