Transient optical absorption in pulsed-X-ray-irradiated pure-silica-core optical fibers: Influence of self-trapped holes

被引：39
|
作者：
Girard, S.
Griscom, D. L.
Baggio, J.
Brichard, B.
Berghmans, F.
机构：
[1] CEA, DIF, F-91680 Bruyeres Le Chatel, France
[2] ImpactGlass Res Int, Tucson, AZ 85712 USA
[3] CEN SCK, Belgian Nucl Res Ctr, B-2400 Mol, Belgium
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2006年 / 352卷 / 23-25期
关键词：
optical fibers; radiation effects; optical properties; silica;
D O I：
10.1016/j.jnoncrysol.2006.03.060
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：
We investigated pulsed-X-ray-induced attenuation in two pure-silica-core (PSC) optical fibers with low-chloride (Cl) and different hydroxyl (OH) contents. We measured at room temperature the temporal (100 ms-1000 s) and spectral (0.73-3.1 eV) variation of the induced optical absorption after a 1 MeV X-ray pulse in both low- and high-OH PSC multi-mode fiber samples. A component of the transient loss in the low-OH sample was found to comprise absorption bands at 1.63 and 1.88 eV (760 and 660 nm) arising from self-trapped holes (STHs). Already known to be unstable at room temperature, STHs appear to play a key role in the transient responses of low-OH/low-Cl pure-silica-core fibers in the visible/near-infrared part of the spectrum. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：2637 / 2642
页数：6
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