| Issue |
MATEC Web of Conferences
Volume 8, 2013
Progress in Ultrafast Laser Modifications of Materials
|
|
|---|---|---|
| Article Number | 04005 | |
| Number of page(s) | 2 | |
| Section | Process characterization and some aspects of femtosecond laser direct writing | |
| DOI | https://doi.org/10.1051/matecconf/20130804005 | |
| Published online | 18 November 2013 | |
Spatially resolved correlation between glass structure and refractive index modifications resulting from irradiation of chalcogenide glass by femtosecond pulse train
1 Lab. Physico-Chimie de l’Atmosphère, Université du Littoral Côte d’Opale 189A Av Maurice Schumann, 59140 Dunkerque France
2 Institut des Sciences Chimiques de Rennes – Unité Verres et Céramiques CNRS UMR 6226 Campus de Beaulieu – Bat 10B – 35042 Rennes Cedex, France
* e-mail: masselin@univ-littoral.fr
A detailed analysis of 2D μ-Raman mapping of refractive index variation (Δn) induced by femtosecond filament in the bulk of a ternary (Ge-Ga-S) chalcogenide glass is presented. The results demonstrate strong structural modifications. S3Ga-GaS3 ethane like units are transformed into triclusters of Ga/S. Also the decrease of the population of GeS4/2 tetrahedrons implies the formation of mixed triclusters T/S where T=Ga and/or Ge. Finally, the refractive index variation is correlated to the structural modifications.
© Owned by the authors, published by EDP Sciences, 2013
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