Temporal evolution and correlation between cooperative luminescence and photodarkening in ytterbium doped silica fibers
| Autor: | Achille Monteville, Denis Tregoat, Stefano Taccheo, David Landais, Hrvoje Gebavi, Olivier Le Goffic, Benoit Cadier, Thierry Robin, Daniel Milanese, David Mechin |
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| Rok vydání: | 2011 |
| Předmět: |
Ytterbium
Luminescence Materials science lasers fiber rare-earth-doped materials photoionization ytterbium Statistics as Topic chemistry.chemical_element 02 engineering and technology 01 natural sciences Absorption Ion 010309 optics Optics 0103 physical sciences photodarkening Yb-doped fibres cooperative luminescence Fiber Optic Technology Absorption (electromagnetic radiation) Dopant business.industry Doping Silicon Dioxide 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics chemistry Attenuation coefficient Luminescent Measurements Photodarkening 0210 nano-technology business |
| Zdroj: | Scopus-Elsevier Optics Express |
| ISSN: | 1094-4087 |
| DOI: | 10.1364/oe.19.025077 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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