Journal
JOURNAL OF NON-CRYSTALLINE SOLIDS
Volume 355, Issue 7, Pages 447-452Publisher
ELSEVIER
DOI: 10.1016/j.jnoncrysol.2009.01.011
Keywords
Infrared glasses; Fluorides; Heavy metal oxides; Optical properties; Absorption; Optical spectroscopy; FTIR measurements; Raman spectroscopy; Oxide glasses; Tellurites; Thermal properties; Calorimetry; Glass transition
Funding
- EU [ASIA-LINK-CN/ASIA-LINK/004 (81206)]
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Glasses based on (85-x)TeO2-xZnF(2)-12PbO-3Nb(2)O(5) (x = 0-40) system have been studied for the first time for fabricating mid-infrared optical fiber lasers. The thermal and optical properties including UV-Vis, Raman as well as FTIR spectra are reported. It is demonstrated that increasing the ZnF2 concentration to 30 mol% significantly increased the thermal stability of the glass. Adding ZnF2 also reduced the hydroxyl (OH) content of the glass resulting in lower optical absorption in the mid-infrared region, which is crucial for infrared laser applications. The glass absorption cut-off edge near 400 nm blue-shifts with increasing ZnF2 addition. Raman spectra show a depolymerization of the glass network with increasing transformation of TeO3+1 to TeO3 structures. (C) 2009 Elsevier B.V. All rights reserved.
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