Gamma radiation-induced refractive index change in Ge- and N-doped silica

被引:23
作者
Brichard, Benoit [2 ]
Butov, Oleg V. [1 ]
Golant, Konstantin M. [1 ]
Fernandez, Alberto Fernandez [3 ]
机构
[1] Russian Acad Sci, Fiber Opt Res Ctr, Moscow 119991, Russia
[2] CEN SCK, Belgian Nucl Res Ctr, B-2400 Mol, Belgium
[3] Masterminds Ltd, CH-2800 Delemont, Switzerland
关键词
D O I
10.1063/1.2885116
中图分类号
O59 [应用物理学];
学科分类号
摘要
We measured the change of the refractive index over a wide wavelength range in Ge- and N-doped high purity (fiber optics grade) silica glasses subjected to gamma irradiation. The radiation-induced change of the refractive index tends to be greater in the infrared part of the spectrum compare to the values measured in the UV-visible part of the spectrum. By means of the Kramers-Kronig relations, we estimate that a weak broadening of the optical vibration band of the silica network adds to this effect. The paper also discusses the difference observed in the spectral behavior of the induced refractive index change for both types of doped glass. (C) 2008 American Institute of Physics.
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页数:4
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