Open AccessTemporal evolution and correlation between cooperative luminescence and photodarkening in ytterbium doped silica fibers
Author(s) -
Hrvoje Gebavi,
S. Taccheo,
Daniel Milanese,
Achille Monteville,
Olivier Le Goffic,
David Landais,
David Méchin,
Denis Trégoat,
Benoît Cadier,
Thierry Robin
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.025077
Subject(s) - photodarkening , luminescence , materials science , ytterbium , doping , optics , aluminosilicate , optoelectronics , fiber laser , chemistry , wavelength , physics , biochemistry , catalysis
The present work describes photodarkening from the viewpoint of cooperative luminescence. The temporal evolution of both effects was measured simultaneously by means of ytterbium doped aluminosilicate fibers for concentrations up to 1.8 wt% Yb3+. The quadratic dependence of photodarkening and cooperative luminescence versus dopant concentration was observed. The change in the photodarkening and cooperative luminescence mutual dynamics for highly and low doped fibers is ascribed to a different ion number which forms the cluster. Cooperative luminescence is proved to be a natural probe for photodarkening since it provides new pieces of information and contributes to the photodarkening mechanism description.