High-power continuous-wave ultraviolet generation by frequency doubling of an argon laser

Abstract

Continuous-wave 257-nm coherent light with a power of 1.2 W is generated by using an intracavity frequency doubling argon laser. In the laser resonator, an elliptical focusing technique is employed to minimize the risk of optical damage to a beta barium borate (BBO) nonlinear optical crystal without sacrificing the frequency conversion coefficient. © 1992 The Japan Society of Applied Physics.