Autor(es)

Rivera, V. A. G. ^[1] ; Barbosa, L. C. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, INOF, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil

^[2] Univ Estadual Campinas, Dept Quantum Elect, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Luminescence; v. 156, p. 116-123, DEC 2014.
• Citações Web of Science: 18

Resumo

The impact of different sodium concentrations on the thermal properties and near-infrared emission at 1540 nm of Er3+-doped tellurite glasses was investigated. The glasses were characterized by UV-visible-near-infrared absorption spectroscopy, emission spectroscopy, Raman spectroscopy, refractive index measurements, and lifetime estimates. A theoretical analysis of the prepared samples was performed with the Judd-Ofelt parameters, radiative transition probability, quantum yield, and radiative lifetime. The glasses presented a large calculated emission cross-section at around 1537 nm (8.4 x 10(-21) cm(2)) and a good quantum yield (93%). The spectroscopic quality factors (Omega(4)/Omega(6)) obtained for the samples showed good agreement with the emission spectrum and bandwidth in the near-infrared region. The advantageous spectroscopic characteristics, together with good thermal stability, indicate that the glasses have potential applications as 1540 nm waveguides. (C) 2014 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 11/21293-0 - Guias de onda planares para telecomunicações ópticas com plasmon - BEPE-PD
• Beneficiário: Victor Anthony Garcia Rivera
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 09/08978-4 - Guias de Onda Planares para Telecomunicações Ópticas com Plasmon
• Beneficiário: Victor Anthony Garcia Rivera
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado