Journal
JOURNAL OF NON-CRYSTALLINE SOLIDS
Volume 357, Issue 11-13, Pages 2463-2467Publisher
ELSEVIER
DOI: 10.1016/j.jnoncrysol.2010.11.060
Keywords
Chalohalide glass; Low-phonon energy; Sm3+ ions; Infrared emission
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The Sm3+-doped low-phonon-energy (LPE) Ge-Ga-Se-Csl glasses were studied. Upon excitation at 980 nm diode laser, intense 1.25 and 1.49 mu m near-infrared fluorescence bands with broad full width at half maximum (FWHM) of 49 and 53 nm were observed, respectively. About 180-300 mu s fluorescence lifetimes were obtained for the 1.49 mu m emission. The thermal properties and structure of glasses were investigated by differential thermal analysis (DTA) and Raman spectra, respectively. Spectroscopic characteristics of the optical transitions have been calculated by using the Judd-Ofelt theory and evaluated for excited levels. (C) 2010 Elsevier B.V. All rights reserved.
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