Tunable UV generation to 0.2325 mu m in LiB/sub 3/O/sub 5/

LiB/sub 3/O/sub 5/ has been found to be phase matchable for sum-frequency generation down to 0.2325 mu m at 20.0 degrees C by mixing the Nd:YAG laser wavelength at 1.0642 mu m with the second harmonic of a visible dye laser. Sellmeier's equations, which are highly accurate from 0.22 to 1.32 mu m, are reported. It is demonstrated that a much shorter wavelength of 0.218 mu m could be generated in this compound by mixing the fourth harmonic of a Nd:YAG laser with the idler of the KNbO/sub 3/ parametric oscillator tuned to 1.208 mu m.<
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