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Proceedings Paper

Lifetime of the 4I13/2 excited levels of the Er3+ -ion in the glass system TeO2-WO3-Na2O-Nb2O5
Author(s): E. F. Chillcce; Sergio Paulo A. Osorio; Eugenio Rodriguez; Carlos Lenz Cesar; Luiz Carlos Barbosa
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Paper Abstract

Tellurite glasses optical fibers became promising for optical amplifiers due to its high rare earth ions solubility. One of the most important parameter for optical amplification is the lifetime of the excited states, which strongly depends on the crystal field around the ions. That crystal field changes dramatically with the host glass and with rare earth concentration. Excited state lifetime studies have been performed on Er3+-doped-TeO2-WO3-Na2O-Nb2O5 glass system. Therefore, we decided to study the Er3+ excited states lifetimes and compared with the Judd-Ofelt theory predictions. We measured only the 4I13/2 to 4I15/2 transitions lifetimes. The other transitions lifetimes can be inferred by knowing the Ω2, Ω4, Ω6 Judd-Ofelt parameters. These parameters were calculated with the electric-magnetic dipole transition oscillator strength for the desired excited levels and ground state obtained from the optical absorption spectra. After performing this calculation we estimated that maximum quantum efficiency (η), measured/calculated lifetimes ratio, would be achieved at 7500ppm (%wt) Er3+ content.

Paper Details

Date Published: 4 April 2005
PDF: 5 pages
Proc. SPIE 5723, Optical Components and Materials II, (4 April 2005); doi: 10.1117/12.588429
Show Author Affiliations
E. F. Chillcce, Univ. Estadual de Campinas (Brazil)
Sergio Paulo A. Osorio, Univ. Estadual de Campinas (Brazil)
Eugenio Rodriguez, Univ. Estadual de Campinas (Brazil)
Carlos Lenz Cesar, Univ. Estadual de Campinas (Brazil)
Luiz Carlos Barbosa, Univ. Estadual de Campinas (Brazil)

Published in SPIE Proceedings Vol. 5723:
Optical Components and Materials II
Shibin Jiang; Michel J.F. Digonnet, Editor(s)

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