Abstract

We realized a compact mid-IR room temperature operating ${\mathrm{Dy}}^{3+}\text{:}{\mathrm{PbGa}}_2{\mathrm{S}}_4$ laser, excited by a diode-pumped Nd:YAG laser at a wavelength of $1318\mathrm{nm}$. The pumping laser was operating in pulsed mode with a pulse length of $4\mathrm{ms}$ and repetition rate of $20\mathrm{Hz}$. Maximum pumping energy at a wavelength of $1318\mathrm{nm}$ was $15\mathrm{mJ}$. Energy up to $90\mathrm{\mu J}$ and mean output power of $1.8\mathrm{mW}$ was obtained at a wavelength of $4290\mathrm{nm}$ with a slope efficiency with respect to absorbed pumping energy better than 3%.

© 2010 Optical Society of America

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