Applied Physics B

, Volume 74, Issue 3, pp 233–236

Energy transfer and upconversion in erbium–ytterbium-doped fluoride phosphate glasses

  • J.F. Philipps
  • T. Töpfer
  • H. Ebendorff-Heidepriem
  • D. Ehrt
  • R. Sauerbrey
Article

DOI: 10.1007/s003400200804

Cite this article as:
Philipps, J., Töpfer, T., Ebendorff-Heidepriem, H. et al. Appl Phys B (2002) 74: 233. doi:10.1007/s003400200804

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.

PACS: 42.60LH; 42.70HJ; 42.70CE

Copyright information

© Springer-Verlag 2002

Authors and Affiliations

  • J.F. Philipps
    • 1
  • T. Töpfer
    • 1
  • H. Ebendorff-Heidepriem
    • 2
  • D. Ehrt
    • 2
  • R. Sauerbrey
    • 1
  1. 1.Institut für Optik und Quantenelektronik, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, GermanyDE
  2. 2.Otto-Schott-Institut für Glaschemie, Friedrich-Schiller-Universität Jena, Fraunhoferstrasse 6, 07743 Jena, GermanyDE