Abstract

A high-power 588nm light produced by an intracavity frequency-doubling acousto-optic Q-switched self-frequency Raman laser is reported. A 20-mm-long YVO4Nd:YVO4 composite crystal and a 15-mm-long LiB3O5 (LBO) with noncritical phase-matching (θ=90°, ϕ=0°) cut were adopted for efficient self-Raman laser operation and second-harmonic generation, respectively. By the optimizing the focus position of incident pump light and Q-switch repetition rate, yellow light with 5.7W average power was generated under the pump power of 23.5W, corresponding to the overall diode-yellow conversion efficiency of 24.2% and slope efficiency of 32%. The pulse width is about 16ns, and the pulse energy is up to 95μJ.

© 2009 Optical Society of America

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