Abstract

New transition metal doped ZnSe/As<sup>2</sup>S<sup>3</sup>:As<sup>2</sup>Se<sup>3</sup>composite materials are proposed for mid-IR fiber-lasers. Mid-IR room-temperature lasing of Cr:ZnSe/As<sup>2</sup>S<sup>3</sup>:As<sup>2</sup>Se<sup>3</sup>micro-composite material and Cr:ZnSe planar waveguide structures is demonstrated at 2.6 and 2.4 µm.

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