Multipass pumped Nd-based thin-disk lasers: Continuous-wave laser operation at 1.06 and 0.9 μm with intracavity frequency doubling

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2007

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The laser performances of the 1.06 μm 4F3/2 → 4I11/2 four-level transition and of the 0.9 μm 4F3/2 → 4I9/2 quasi-three-level transition were investigated using multipass pumped Nd-based media in thin-disk geometry. When pumping at 0.81 μm into the 4F5/2 level, continuous-wave laser operation was obtained with powers in excess of 10 W at 1.06 μm, in the multiwatt region at 0.91 μm in Nd:YVO4 and Nd:GdVO4, and at 0.95 μm 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 0.88 μm, which is directed into the 4F3/2 emitting level, was also employed, and Nd:YVO4 and Nd:GdVO4 thin-disk lasers with ∼9 W output power at 1.06 μm and visible laser radiation at 0.53 μm with output power in excess of 4 W were realized. Frequency-doubled Nd:vanadate thin-disk lasers with deep blue emission at 0.46 μm were obtained under pumping directly into the 4F3/2 emitting level. © 2007 Optical Society of America.

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Forschungsinformationssystem der UHH

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