Abstract

We exploited Nd3+ laser emission at 1061.9 nm (F43/2I411/2 channel) in a self-χ2 active GdAl3BO34:Nd3+ laser crystal. UV radiation was obtained from a 1.8% yield from self-sum-frequency mixing:  1/pump +1/1061.9=1/UV, during pumping in the Nd3+4G5/2G27/2 levels near 588 nm. The UV tunability had a range of 378–382 nm. We have demonstrated, for the first time to our knowledge, generation of coherent IR radiation from a self-difference-frequency mixing laser: 1/pump -1/1061.9=1/IR. We got a 0.5% yield and tunability in the 1305–1365-nm range.

© 2002 Optical Society of America

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