Abstract
Rare earth doped glass–ceramics transparent in the infrared region up to 16μm have been prepared and studied. The enhancement of the emission of Er3+ ions at 1.54μm with increasing crystallinity was demonstrated in a selenium-based glass–ceramic having a composition of 80GeSe2–20Ga2Se3+1000ppmEr. The optical transmission, microstructure and luminescence properties of a base glass and glass–ceramics were investigated. Luminescence intensities up to 7 times greater were obtained in glass–ceramics in comparison to the base glass. These materials are promising candidates for the production of new laser sources in the mid-infrared region.
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