Development of Nonlinear Optical Crystals for Generation of Deep-Ultraviolet Light

Abstract

This paper reviews recent advances and challenges in some nonlinear optical borate crystals used for deep ultraviolet light generation. We describe a newly developed large, high-quality CsLiB6O10 (CLBO) crystal and high-power DUV light generation at 266 nm from the frequency quadrupling of a picosecond- pulsed 1064-nm laser. We introduce stable, 10000-hour operation of a 266-nm picosecond laser with an average power of 20 W. We also report achieving an average power of 53 W at 266 nm.