We have generated 4.7 W of UV (255-nm) radiation with wall plug efficiency of 0.12% by frequency doubling the green (511-nm) output of a kinetically enhanced medium-scale copper-vapor laser (CVL) in cesium lithium borate (CLBO). Frequency doubling in β -barium borate produced 3.9 W of UV radiation with wall plug efficiency of 0.1%. We found that conversion was better with CLBO because of the reduced constraints on CVL beam quality, less UV absorption, and smaller UV walk-off.
© 1998 Optical Society of America
Rodney I. Trickett, Michael J. Withford, and Daniel J. W. Brown, "4.7-W, 255-nm source based on second-harmonic generation of a copper-vapor laser in cesium lithium borate," Opt. Lett. 23, 189-191 (1998)