Abstract

We report a room temperature (RT) operation of a Fe:CdTe laser pumped by a Q-switched 2.94 μm $\mathrm{Er}\text{:}{\mathrm{Y}}_3{\mathrm{Al}}_2{({\mathrm{AlO}}_4)}_3$ laser. The Fe:CdTe laser produced 2 mJ of output energy at $\lambda =5.55\mathrm{\mu m}$ with slope efficiency of 16% with respect to absorbed pump energy. With the use of an intracavity prism, the spectral tuning was demonstrated in the 5.1–6.3 μm range, being the longest wavelength tuning achieved for ${\mathrm{Fe}}^{2+}\text{:}\mathrm{II}–\mathrm{VI}$ lasers. The lifetime of the upper laser level was measured to be 530 ns at RT.

© 2019 Optical Society of America

Room temperature Fe²⁺:Cd_1-xMn_xTe laser generating at 5.4–6  μm

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