Abstract

Efficient cw and passively Q-switched operation with self-stimulated Raman scattering conversion was demonstrated in a compact diode-pumped Yb:KLu(WO4)2 laser. A cw output power of 3.28W was obtained with an optical efficiency of 48.2% and a slope efficiency of 78.2% with respect to the incident pump power. Stable Q-switched operation was achieved with a Cr4+:YAG saturable absorber, generating 32.4μJ fundamental pulses with a duration of 1.41ns at 1030.6nm and 14.4μJ Raman pulses with a duration of 0.71ns at 1137.6nm. At an incident pump power of 7.0W, the average output power reached 0.9 and 0.4W for fundamental and Raman radiation, with slope efficiencies of 32.1% and 14.1%, respectively.

© 2005 Optical Society of America

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