Photobleaching of thulium-doped ZBLAN fibers with visible light

被引：25
|
作者：
Laperle, P [1 ]
Chandonnet, A [1 ]
Vallee, R [1 ]
机构：
[1] UNIV LAVAL,DEPT PHYS,CTR OPT PHOTON & LASER,ST FOY,PQ G1K 7P4,CANADA
来源：
OPTICS LETTERS | 1997年 / 22卷 / 03期
关键词：
D O I：
10.1364/OL.22.000178
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Photobleaching of darkened thulium-doped ZBLAN fibers is observed after short exposure to visible light. The bleaching process is characterized by a stretched-exponential function of time with an exponent beta independent of both the bleaching intensity and the thulium concentration. The bleaching rate 1/tau is also shown to scale linearly with the bleaching intensity and to have a 1/3-power dependence on the thulium concentration. Incomplete and slow recovery of the color centers is observed in previously bleached fibers, suggesting the presence of at least two types of defect. (C) 1997 Optical Society of America
引用
收藏
页码：178 / 180
页数：3
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