Abstract

We demonstrate UV generation in ${\mathrm{CsB}}_3{\mathrm{O}}_5$ (CBO) crystals grown by the top-seeded solution growth technique. 355-nm UV light was generated by use of a type II CBO crystal as a sum frequency of the fundamental light and the second harmonic of a nanosecond $\mathrm{Nd}:{\mathrm{YVO}}_4$ laser. A 3.0-W output of the third-harmonic was obtained at a repetition rate of 31 kHz. The conversion efficiency from the fundamental light to the third harmonic reached 30%, which was 1.5 times higher than that obtained with a type II ${\mathrm{LiB}}_3{\mathrm{O}}_5$ crystal under the same experimental conditions.

© 2003 Optical Society of America

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