| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1486022 | Journal of Non-Crystalline Solids | 2006 | 5 Pages |
Abstract
Thermal lens (TL) measurements were performed in tellurite glasses, 70TeO2–19WO3–7Na2O–4Nb2O5 (mol%), undoped, doped with Er3+ (1.19 × 1020 ions/cm3) and co-doped with Er3+ (1.19 × 1020 ions/cm3)/Tm3+ (1.56 × 1020 ions/cm3). The absolute nonradiative quantum efficiency (ϕ) was determined by the TL method. The ϕ values for Er3+/Tm3+-co-doped and Er3+-doped tellurite glasses were 0.98 and 0.74, respectively. Fluorescence spectra were performed at λe = 488 nm and used to estimate the fluorescence quantum efficiency (η) using the TL results. These values were compared with results obtained by Judd–Ofelt calculations.
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Authors
V. Pilla, E.F. Chillcce, E. Rodriguez, T. Catunda, E. Munin, C.L. Cesar, L.C. Barbosa,