Annealing dynamics of waveguide Bragg gratings: evidence of femtosecond laser induced colour centres

被引：40

作者：

Dekker, P. ^{[1
]}

Ams, M. ^{[1
]}

Marshall, G. D. ^{[1
]}

Little, D. J. ^{[1
]}

Withford, M. J. ^{[1
]}

机构：

[1] Macquarie Univ, Dept Phys & Engn, MQ Photon Res Ctr, CUDOS, N Ryde, NSW 2109, Australia

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 04期

基金：

澳大利亚研究理事会;

关键词：

PHOSPHATE-GLASSES; SILICA GLASS; FUSED-SILICA; WRITTEN; FABRICATION; FIBER;

D O I：

10.1364/OE.18.003274

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

There is still significant speculation regarding the nature of femtosecond laser induced index change in bulk glasses with colour centre formation and densification the main candidates. In the work presented here, we fabricated waveguide Bragg gratings in doped and undoped phosphate glasses and use these as a diagnostic for monitoring subtle changes in the induced refractive index during photo-and thermal annealing experiments. Reductions in grating strengths during such experiments were attributed to the annihilation of colour centres. (C) 2010 Optical Society of America

引用

页码：3274 / 3283

页数：10

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