| Full text | |
| Author(s): |
Total Authors: 2
|
| Affiliation: | [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
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | Journal of Luminescence; v. 156, p. 116-123, DEC 2014. |
| Web of Science Citations: | 18 |
| Abstract | |
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) | |
| FAPESP's process: | 11/21293-0 - Planar waveguides for optical telecommunications from plasmonic |
| Grantee: | Victor Anthony Garcia Rivera |
| Support Opportunities: | Scholarships abroad - Research Internship - Post-doctor |
| FAPESP's process: | 09/08978-4 - Planar Waveguide for Telecommunications from Plasmons |
| Grantee: | Victor Anthony Garcia Rivera |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |