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Synthesis and downconversion photoluminescence of Erbium-doped chalcohalide glasses of AgCl(I)–Ga2S3–La2S3 systems

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Abstract

Erbium-doped chalcohalide glasses of ${\rm AgCl}({\rm I}) {-} {{\rm Ga}_2}{{\rm S}_3} {-} {{\rm La}_2}{{\rm S}_3}$ systems were synthesized by using the melting-cooling method. The introduction of a halide component leads to a decrease in the absorption coefficient, and the addition of erbium leads to the emergence of narrow absorption bands associated with transitions in the f-shell of ${{\rm Er}^{3 +}}$ ions. Five PL bands were detected in erbium-doped samples when excited by a laser with a 532 nm wavelength, the most intense of which at 980 nm and 1540 nm are promising for use in optical amplifiers and fiber optic networks. It was established that the glass-forming matrix ${\rm AgCl} {-} {{\rm Ga}_2}{{\rm S}_3} {-} {{\rm La}_2}{{\rm S}_3}$, doped with ${{\rm Er}^{3 +}}$ ions, is an effective light-emitting medium in the near-infrared range. At the same time, the concentration quenching of the PL was observed in the ${\rm AgI} {-} {{\rm Ga}_2}{{\rm S}_3} {-} {{\rm La}_2}{{\rm S}_3}$ system when erbium content increases.

© 2021 Optical Society of America

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Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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