Abstract

Different regimes of laser operation and stimulated Raman scattering (SRS) for a laser diode (LD)-pumped $\mathrm{Pb}\mathrm{Mo}{\mathrm{O}}_4:{\mathrm{Nd}}^{3+}$ crystal have been investigated. Under $1.5\mathrm{W}$ LD pumping, the output power of the $\mathrm{Pb}\mathrm{Mo}{\mathrm{O}}_4:{\mathrm{Nd}}^{3+}$ laser in the free-running mode at $1056\mathrm{nm}$ reached $0.65\mathrm{W}$ with a slope efficiency of up to 53%. Using different $\mathrm{Li}\mathrm{F}:{\mathrm{F}}_2^{-}$ saturable absorbers, we achieved a maximum pulse energy of $11\mu \mathrm{J}$ at a $1.4\mathrm{ns}$ pulse duration and a maximum output power of $0.35\mathrm{W}$ $\left(10\mu \mathrm{J}\right)$ at a $7\mathrm{ns}$ pulse width in the passively Q-switched mode. $\mathrm{Pb}\mathrm{Mo}{\mathrm{O}}_4:{\mathrm{Nd}}^{3+}$ self-Raman-laser operation at $1163\mathrm{nm}$ (first Stokes) was obtained for the first time, to our knowledge. The self-Raman-laser output pulse energy was measured to be as high as $6\mu \mathrm{J}$ and the pulse duration was estimated to be shorter than $500\mathrm{ps}$.

© 2006 Optical Society of America

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