Unusual luminescence quenching and reviving behavior of Bi-doped germanate glasses

Here for the first time, we report an unusual annealing temperature dependent near-infrared (NIR) luminescence quenching and reviving behavior in Bi-doped MgO-Al₂O₃-GeO₂ glasses. Systematic characterizations of the samples by using differential thermal analysis (DTA), photoluminescence and absorptio...

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Published inOptics express Vol. 19; no. 23; pp. 23436 - 23443
Main Authors Xu, Beibei, Zhou, Shifeng, Guan, Miaojia, Tan, Dezhi, Teng, Yu, Zhou, Jiajia, Ma, Zhijun, Hong, Zhanglian, Qiu, Jianrong
Format Journal Article
LanguageEnglish
Published United States 07.11.2011
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Summary:Here for the first time, we report an unusual annealing temperature dependent near-infrared (NIR) luminescence quenching and reviving behavior in Bi-doped MgO-Al₂O₃-GeO₂ glasses. Systematic characterizations of the samples by using differential thermal analysis (DTA), photoluminescence and absorption spectra, X-ray diffraction (XRD) and transmission electron microscopy (TEM) indicate that this phenomenon is associated with the reversible reaction of Bi⁺ and Bi⁰ initiated by the change of local glass structure. Excitingly, wavelength tunable luminescence is also observed and it can be ascribed to selective excitation of active Bi⁺ center in different sites. These results not only open a new way for controlling luminescence properties of main group elements in glass but also provide great value for improving practical active-fiber drawing process.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.19.023436