Characterization of CsB_3O_5 crystal for ultraviolet generation

We present sum-frequency generation (SFG) characteristics of CsB(3)O(5) crystal (CBO). The effective nonlinear-optical coefficient of CBO in the ultraviolet range is close to its maximum. High-efficiency SFG with a picosecond Nd:YAG laser with output wavelengths of 355 and 266 nm was achieved. Experiments showed that CBO can be used under high power density without damage to the crystal.