Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9586287 | Journal of Luminescence | 2005 | 8 Pages |
Abstract
Fabrication of novel silica fiber heavily doped with ytterbium (Yb3+) and holmium (Ho3+) for the use as a potentially lasing and amplifying fiber-optic material is reported. Luminescent properties of the fiber are studied in the visible and near-IR spectral ranges under the low-power IR diode pumping. Analysis of the fiber luminescence and absorption spectra allows one to conclude that, at concentration of Ho3+ of one-order lower than that of Yb3+ (â¼0.5% and â¼6%, respectively), an effective energy migration and up-conversion within the Yb3+-Ho3+ mixed system take place, leading to the visible luminescence. An avalanche-like character of the up-conversion process and possible impact of Yb3+ ion pairs' formation on an energy transfer from Yb3+ to Ho3+ are discussed.
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Authors
A.V. Kir'yanov, V.P. Minkovich, Yu.O. Barmenkov, M.A. Martinez Gamez, A. Martinez-Rios,