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Proceedings Paper

Photothermal spectroscopic characterization in tellurite glasses codoped with rare-earth ions
Author(s): Viviane Pilla; Enver F. Chillcce; Eugenio Rodriguez; Thomaz Catunda; Egberto Munin; Carlos L. Cesar; Luiz C. Barbosa
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Paper Abstract

Thermal Lens (TL) and spectroscopic characterizations were performed in 70TeO2-19WO3-7Na2O-4Nb2O5 (mol%) tellurite glasses. TL measurements were accomplished in Er3+ /Tm3+ co-doped tellurite glasses in function of the Tm2O3 concentration (0.4-1.6 x1020 ions/cm3). Fluorescence spectra at 488 nm showed that Er3+ /Tm3+ co-doped tellurite glasses present several emission bands between (500-1800) nm. However, the more intense emission bands correspond to the Tm3+ and Tm3+ transitions (4I13/24I15/2 and 3F43H6), respectively. The absolute nonradiative quantum efficiency (φ) was determined by TL method. Higher values of φ were obtained with the increase of Tm2O3 concentration inside of the Er3+/Tm3+ co-doped tellurite glasses. These results are corroborated by the Judd-Ofelt calculations.

Paper Details

Date Published: 28 February 2006
PDF: 7 pages
Proc. SPIE 6116, Optical Components and Materials III, 61160X (28 February 2006); doi: 10.1117/12.646583
Show Author Affiliations
Viviane Pilla, Univ. do Vale do Paríba (Brazil)
Enver F. Chillcce, Univ. Estadual de Campinas (Brazil)
Eugenio Rodriguez, Univ. Estadual de Campinas (Brazil)
Thomaz Catunda, Univ. de São Paulo (Brazil)
Egberto Munin, Univ. do Vale do Paríba (Brazil)
Carlos L. Cesar, Univ. Estadual de Campinas (Brazil)
Luiz C. Barbosa, Univ. Estadual de Campinas (Brazil)

Published in SPIE Proceedings Vol. 6116:
Optical Components and Materials III
Michel J. F. Digonnet; Shibin Jiang, Editor(s)

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