Luminescence from bismuth-germanate glasses and its manipulation through oxidants

  • We report on the luminescence properties of bismuth-germanate glasses in which the speciation of bismuth is controlled via addition of CeO2 as an oxidant. A glass system with the composition (70.5-x)GeO2 – 24.5Bi2O3 – 5WO3: xCeO2, with x = 0...2.0, is analyzed in terms of optical properties and redox states of bismuth and cerium. We show that optical transmission and luminescence in the visible to near-infrared (NIR) spectral range can be adjusted by the ratio of bismuth and cerium. Specifically, ultra-broad NIR luminescence spanning the range of 1000 – 1600 nm can be obtained for x ≤ 0.1. This is of particular interest for application of this type of glass in fiber-optical amplifiers where We report on the luminescence properties of bismuth-germanate glasses in which the speciation of bismuth is controlled via addition of CeO2 as an oxidant. A glass system with the composition (70.5-x)GeO2 – 24.5Bi2O3 – 5WO3: xCeO2, with x = 0...2.0, is analyzed in terms of optical properties and redox states of bismuth and cerium. We show that optical transmission and luminescence in the visible to near-infrared (NIR) spectral range can be adjusted by the ratio of bismuth and cerium. Specifically, ultra-broad NIR luminescence spanning the range of 1000 – 1600 nm can be obtained for x ≤ 0.1. This is of particular interest for application of this type of glass in fiber-optical amplifiers where no additional dopants would be required.show moreshow less

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Metadaten
Author:Anja Winterstein, Sean Manning, Heike Ebendorff-Heidepriem, Lothar Wondraczek
URN:urn:nbn:de:bvb:29-opus-36003
Document Type:Article
Language:English
Date of Publication (online):2012/10/10
Publishing Institution:Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
Release Date:2012/10/10
SWD-Keyword:-
Original publication:Optical Materials Express 2.10 (2012): S. 1320-1328. 10.10.2012 <http://www.opticsinfobase.org/ome/abstract.cfm?URI=ome-2-10-1320>
Institutes:Naturwissenschaftliche Fakultät -ohne weitere Spezifikation-
Dewey Decimal Classification:530 Physik
Collections:Von der FAU geförderte Open Access Artikel 2012

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