Abstract

A crystalline Raman laser is pumped at $90°$ to the Raman laser axis by a single pass from a line-focused $532\mathrm{nm}$ pump laser of pulse duration $10\mathrm{ns}$. The Raman laser threshold was $6.1\mathrm{mJ}$, and at $12\mathrm{mJ}$ pump energy, a maximum output energy of $2.7\mathrm{mJ}$ was obtained with a slope efficiency of 46%. The threshold pump intensity is within a factor of 2 of the same device when end-pumped. The results highlight significant potential for coherent beam conversion and combination with enhanced degrees of flexibility and increased power.

© 2011 Optical Society of America

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