We demonstrate UV generation in CsB3O5 (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 Nd:YVO4 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 LiB3O5 crystal under the same experimental conditions.
© 2003 Optical Society of America
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.3610) Lasers and laser optics : Lasers, ultraviolet
(160.4330) Materials : Nonlinear optical materials
(190.2620) Nonlinear optics : Harmonic generation and mixing
H. Kitano, K. Sato, N. Ushiyama, M. Yoshimura, Y. Mori, and T. Sasaki, "Efficient 355-nm generation in CsB3O5 crystal," Opt. Lett. 28, 263-265 (2003)