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Type: Artigo de periódico
Title: Thermo-optical Properties And Nonradiative Quantum Efficiency Of Er3+-doped And Er3+/tm3+-co-doped Tellurite Glasses
Author: Pilla V.
Chillcce E.F.
Rodriguez E.
Catunda T.
Munin E.
Cesar C.L.
Barbosa L.C.
Abstract: Thermal lens (TL) measurements were performed in tellurite glasses, 70TeO2-19WO3-7Na2O-4Nb2 O5 (mol%), undoped, doped with Er3+ (1.19 × 1020 ions/cm3) and co-doped with Er3+ (1.19 × 1020 ions/cm3)/Tm3+ (1.56 × 1020 ions/cm3). The absolute nonradiative quantum efficiency (φ{symbol}) was determined by the TL method. The φ{symbol} values for Er3+/Tm3+-co-doped and Er3+-doped tellurite glasses were 0.98 and 0.74, respectively. Fluorescence spectra were performed at λe = 488 nm and used to estimate the fluorescence quantum efficiency (η) using the TL results. These values were compared with results obtained by Judd-Ofelt calculations. © 2006 Elsevier B.V. All rights reserved.
Rights: fechado
Identifier DOI: 10.1016/j.jnoncrysol.2006.03.090
Date Issue: 2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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