Deactivation of Yb3+ ions due to photodarkening

被引：19
|
作者：
Jetschke, S. [1 ]
Schwuchow, A. [1 ]
Unger, S. [1 ]
Leich, M. [1 ]
Jaeger, M. [1 ]
Kirchhof, J. [1 ]
机构：
[1] Inst Photon Technol, D-07745 Jena, Germany
来源：
OPTICAL MATERIALS EXPRESS | 2013年 / 3卷 / 04期
关键词：
DOPED ALUMINOSILICATE FIBERS;
D O I：
10.1364/OME.3.000452
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We carefully examined the fluorescence properties of Yb-doped fibers before and after pump-induced photodarkening (PD) and found a significant reduction of Yb3+ fluorescence intensity and lifetime due to the degradation process, obviously correlated with the measured PD loss. To explain these results, a non-radiative energy transfer from excited Yb3+ ions to the atomic defects (color centers) in close vicinity of the Yb3+ ions is suggested and discussed quantitatively as a function of PD loss generated in fibers with different Yb concentrations, by various pump powers or at different photodarkening states. All modifications of fluorescence properties proved to be reversed by thermal bleaching of the PD-induced color centers. (C) 2013 Optical Society of America
引用
收藏
页码：452 / 458
页数：7
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