Photobleaching of photodarkening in ytterbium doped aluminosilicate fibers with 633 nm irradiation

被引：41
|
作者：
Gebavi, Hrvoje [1 ]
Taccheo, Stefano [1 ]
Tregoat, Denis [2 ]
Monteville, Achille [2 ]
Robin, Thierry [3 ]
机构：
[1] Swansea Univ, Coll Engn, Swansea SA2 8PP, W Glam, Wales
[2] Perfos, F-22300 Lannion, France
[3] IXFiber SAS, F-22300 Lannion, France
来源：
OPTICAL MATERIALS EXPRESS | 2012年 / 2卷 / 09期
关键词：
LUMINESCENCE;
D O I：
10.1364/OME.2.001286
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the present study, we examined photodarkening loss reduction in Yb3+ doped aluminosilicate fibers by utilizing 633 nm light irradiation. It is demonstrated that the final photobleaching value is intensity dependent, but the percentage of photodarkening reduction does not depend on dopant concentrations for settled bleaching intensity. Further examination was committed to explore the photobleaching starting from different photodarkening loss levels while keeping the same dopant concentration and subsequently the other way around. This approach related photobleaching with the number of photodarkening induced color centers and also showed that photobleaching was dopant concentration dependent. In all experiments an unbleachable residual loss for the bleaching powers up to similar to 100 W/mm(2) was found. To the best of our knowledge this is the most extensive investigation of photobleaching effect. (c) 2012 Optical Society of America
引用
收藏
页码：1286 / 1291
页数：6
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