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https://hdl.handle.net/2440/34941
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Type: | Journal article |
Title: | Energy transfer and upconversion in erbium-ytterbium-doped fluoride phosphate glasses |
Author: | Philipps, J. Topfer, T. Ebendorff-Heidepriem, H. Ehrt, D. Sauerbrey, R. |
Citation: | Applied Physics B: Lasers and Optics, 2002; 74(3):233-236 |
Publisher: | Springer |
Issue Date: | 2002 |
ISSN: | 0946-2171 1432-0649 |
Statement of Responsibility: | J.F. Philipps, T. Töpfer, H. Ebendorff-Heidepriem, D. Ehrt and R. Sauerbrey |
Abstract: | The energy-transfer rate coefficient from ytterbium to erbium (K) and upconversion rate coefficient for erbium (C) are determined by analysis of erbium fluorescence decay under different pumping conditions. A simple rate-equation model was used to describe the fluorescence dynamics. Numerical analysis of the model delivered K and C as fit parameters to the experimental curves. Values of K ranging from 0.75-1.42 × 10-16 cm3/s and C from 0.8-1.7 × 10-18 cm3/s were found. The results obtained are of the same magnitude as results for phosphate glasses reported in the literature. Further analysis showed that high erbium concentrations (2 × 1020 cm-3) need a much higher pump intensity to reach threshold due to increased losses caused by upconversion. |
Description: | The original publication can be found at www.springerlink.com |
DOI: | 10.1007/s003400200804 |
Published version: | http://dx.doi.org/10.1007/s003400200804 |
Appears in Collections: | Aurora harvest 6 Physics publications |
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