Abstract

An efficient intracavity frequency-doubled Raman laser was obtained by using an $\mathrm{Sr}\mathrm{W}{\mathrm{O}}_4$ Raman medium, an Nd:YAG ceramic gain medium, and a KTP frequency-doubling medium. Three laser cavities, including a two-mirror cavity, a three-mirror coupled cavity, and a folded cavity, were investigated. With the coupled cavity, a $2.93\mathrm{W}$, $590\mathrm{nm}$ laser was obtained at an incident pump power of $16.2\mathrm{W}$ and a pulse repetition frequency of $20\mathrm{kHz}$; the corresponding conversion efficiency was 18.1%. The highest conversion efficiency of 19.2% was obtained at an incident pump power of $14.1\mathrm{W}$ and a pulse repetition frequency of $15\mathrm{kHz}$. The obtained maximum output power and conversion efficiency were much higher than the results previously obtained with intracavity frequency-doubled solid-state Raman lasers.

© 2009 Optical Society of America

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