ZnSe and other zinc chalcogenide semiconductor materials can be doped with divalent transition metal ions to create a
mid-IR laser gain medium with active function in the wavelength range 2 - 5 microns and potentially beyond using
frequency conversion. As a step towards fiberized laser devices, we have manufactured ZnSe semiconductor fiber
waveguides with low (less than 1dB/cm at 1550nm) optical losses, as well as more complex ternary alloys with
ZnSxSe(1-x) stoichiometry to potentially allow for annular heterostructures with effective and low order mode corecladding
waveguiding.
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