Journal
OPTICAL MATERIALS
Volume 37, Issue -, Pages 281-286Publisher
ELSEVIER
DOI: 10.1016/j.optmat.2014.06.009
Keywords
Glasses; Metallic nanoparticles; Rare earth ions; Energy transfer; Luminescence; Thermal diffusivity
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Funding
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq), through the National Institute of Photonics (INCT Project)
- CAPES/COFECUB
- CNPq
- CAPES
- FAPEMIG
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The present work is devoted to the characterization of the thermal and spectroscopic properties of tellurite glasses, codoped with Er3+, Yb3+ and Tm3+ rare-earth ions and silver nanoparticles (NPs). The techniques used for this investigation were UV-visible and infrared absorption, time-resolved luminescence and thermal lens. Time-resolved luminescence studies indicate efficient Yb3+ --> Er3+ and Yb3+ --> Tm3+ energy transfers and intense Er3+ and Tm3+ mid-infrared emissions around 1550 nm and 1860 nm, respectively. The presence NPs is found to increase the thermal diffusivity of the materials and to shorten the mid-infrared emission lifetime of both the Er3+ and Tm3+ ions. (C) 2014 Elsevier B.V. All rights reserved.
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