| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7901999 | Journal of Non-Crystalline Solids | 2014 | 5 Pages |
Abstract
A set of Ce-/Yb-co-doped silica optical fiber preform cores, differing in terms of dopant concentrations are studied by Electron Paramagnetic Resonance (EPR) spectroscopy before and after irradiation of the samples with excimer UV laser light and γ-rays. Evidence of Yb3 + clustering in the case of high Yb content samples is observed on as prepared samples regardless of the presence of Ce3 + ions. Si-EⲠand Al-OHC centers were identified upon photon irradiation. The results are correlated to the micro-structural origin of the photodarkening process occurring in Ce-Yb doped glass fibers.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Mario Chiesa, Kent Mattsson, Stefano Taccheo, Thierry Robin, Laurent Lablonde, David Mechin, Daniel Milanese,