Abstract

The first (to our knowledge) resonantly pumped laser action based on the ${}^{3}F_3\Rightarrow {}^{3}H_4$ transition of a ${\mathrm{Pr}}^{3+}$ ion is demonstrated. ${\mathrm{Pr}}^{3+}$-doped $\mathrm{Rb}{\mathrm{Pb}}_2{\mathrm{Cl}}_5$ laser in-line pumped at $\sim 1547\mathrm{nm}$ exhibited slope efficiency of over 21% at $1676.5\mathrm{nm}$, despite the marginal quality of the laser sample available for this proof-of-concept experiment. This is believed to be the first non-${\mathrm{Er}}^{3+}$ resonantly pumped $\sim 1.6\mu \mathrm{m}$ eye-safe laser ever reported.

© 2009 Optical Society of America

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