Journal
OPTICAL MATERIALS
Volume 57, Issue -, Pages 71-78Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optmat.2016.04.019
Keywords
Antimony glasses; Luminescence; Erbium/ytterbium doped glasses
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Funding
- Sao Paulo Research Foundation - FAPESP [2010/20776-5, 2013/07793-6]
- CNPq [502391/2014-6]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [10/20776-5] Funding Source: FAPESP
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Recent advances in glass chemistry have led to new multifunctional optical glasses of great technological importance. Glasses containing high amounts of antimony have been studied for use in nonlinear optics, near-infrared transmission, and as hosts for rare-earth ions in photonic devices. This work describes a luminescence study of Er3+ and Er3+/Yb3+ co-doping in a new SbPO4-GeO2 binary glass system. Near infrared and visible up-conversion emissions were observed in the green and red regions, which are enhanced when the samples are co-doped with Yb3+. Near-infrared emissions have good quantum efficiency and full width half maximum of 61 nm. Visible up-conversion emissions are governed by two photons and described by excited state absorption, energy transfer and cross-relaxation processes. (C) 2016 Elsevier B.V. All rights reserved.
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