Abstract

The recent development of the nonlinear material caesium lithium borate (CLBO) has led to significant advances in high average power UV generation by nonlinear frequency conversion of high-pulse-rate visible laser sources. CLBO is an attractive material because of its relatively low walk off, and moderately high angular and temperature acceptance, particularly in comparison to BBO. Kojima et al¹ have used CLBO to generate 20W of UV at a conversion efficiency of 19.4% by frequency doubling the green output of a solid-state laser source operating at a pulse rate of 10kHz. We have generated 4.7W of UV with 35% efficiency using a kinetically enhanced copper laser pump source operating at a pulse rate of 10kHz².

© 2001 EPS