Directly Written DFB Waveguide Lasers Using Femtosecond Laser Pulses

被引：0

作者：

Ams, Martin ^{[1
]}

Dekker, Peter ^{[1
]}

Marshall, Graham D. ^{[1
]}

Little, Douglas J. ^{[1
]}

Withford, Michael J. ^{[1
]}

机构：

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

来源：

INTERNATIONAL SYMPOSIUM ON HIGH POWER LASER ABLATION 2010 | 2010年 / 1278卷

关键词：

Femtosecond; gratings; phosphate; colour centres; annealing; 1.5; MU-M; PHOSPHATE-GLASSES; FABRICATION; CENTERS; SILICA;

D O I：

10.1063/1.3507132

中图分类号：

O59 [应用物理学];

学科分类号：

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.

引用

页码：438 / 445

页数：8

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