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Proceedings Paper

Down- and up-conversion emissions in Er-doped transparent fluorotellurite glass-ceramics
Author(s): A. Miguel; R. Morea; J. Gonzalo; J. Fernandez; R. Balda
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Paper Abstract

In this work, we report the near infrared and upconversion emissions of Er3+-doped transparent fluorotellurite glassceramics obtained by heat treatment of the precursor Er-doped TeO2-ZnO-ZnF2 glass. Structural analysis shows that ErF3 nanocrystals nucleated in the glass-ceramic sample are homogeneously distributed in the glass matrix with a typical size of 45±10 nm. The comparison of the fluorescence properties of Er3+-doped precursor glass and glass-ceramic confirms the successful incorporation of the rare-earth into the nanocrystals. An enhancement of the red upconversion emission due to 4F9/24I15/2 transition together with weak emission bands due to transitions from 2H9/2, 4F3/2,5/2, and 4F7/2 levels to the ground state are observed under excitation at 801 nm in the glass-ceramic sample. The temporal evolution of the red emission together with the excitation upconversion spectrum suggest that energy transfer processes are responsible for the enhancement of the red emission.

Paper Details

Date Published: 16 March 2015
PDF: 10 pages
Proc. SPIE 9359, Optical Components and Materials XII, 93590X (16 March 2015); doi: 10.1117/12.2075584
Show Author Affiliations
A. Miguel, Univ. del País Vasco (Spain)
R. Morea, Consejo Superior de Investigaciones Científicas (Spain)
J. Gonzalo, Consejo Superior de Investigaciones Científicas (Spain)
J. Fernandez, Univ. del País Vasco (Spain)
Materials Physics Ctr. CSIC-UPV/EHU (Spain)
R. Balda, Univ. del País Vasco (Spain)
Materials Physics Ctr CSIC-UPV/EHU (Spain)

Published in SPIE Proceedings Vol. 9359:
Optical Components and Materials XII
Shibin Jiang; Michel J. F. Digonnet, Editor(s)

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