Materials for high-power fiber lasers

被引：88
作者：
Kirchhof, J. [1 ]
Unger, S. [1 ]
Schwuchow, A. [1 ]
Grimm, S. [1 ]
Reichel, V. [1 ]
机构：
[1] Inst Phys Hochtechnol EV, Opt Div, D-07702 Jena, Germany
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2006年 / 352卷 / 23-25期
关键词：
oxidation; reduction; optical fibers; lasers; optical spectroscopy; silica; rare-earths in glasses;
D O I：
10.1016/j.jnoncrysol.2006.02.061
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The absorption and emission properties of silica based ytterbium doped preforms, made by Modified Chemical Vapor Deposition, and of the drawn fibers were investigated as a function of the atmosphere during the preform collapsing. Under increasingly reducing conditions for the collapsing atmosphere, a strong UV/VIS absorption is built up, accompanied with an UV excited emission in the visible region, obviously induced by the formation of Yb2+ ions. Both the fluorescence lifetime of the Yb3+ lasing level and the cooperative fluorescence in the visible are remarkably diminished. Laser power experiments with the different fibers show a strong deterioration of the laser efficiency parallel to the degree of reduction of the doped glasses. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：2399 / 2403
页数：5
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