Structural modification of gallium lanthanum sulfide glass induced by ultrafast laser inscription

Romina Diener; Gloria Tabacchi; Stefan Nolte; Stefano Minardi

doi:10.1117/12.2250591

17 February 2017 Structural modification of gallium lanthanum sulfide glass induced by ultrafast laser inscription

Romina Diener, Gloria Tabacchi, Stefan Nolte, Stefano Minardi

Proceedings Volume 10092, Laser-based Micro- and Nanoprocessing XI; 100920D (2017) https://doi.org/10.1117/12.2250591
Event: SPIE LASE, 2017, San Francisco, California, United States

Abstract

We present a preliminary experimental chemical-physical characterisation of the structural modification of Gallium Lanthanum Sulfide (GLS) glass occurring during ultrafast laser inscription of waveguides in thermal regime. Our measurements with a micro-Raman spectrograph confirmed previous reports of negligible chemical modification of the irradiated glass. Additionally, the observed onset of significant long-range stress patterns surrounding the irradiated regions indicate that GLS is subject to an irradiation-induced densification of the glass network. We discuss the consequences of these observations for the amelioration of the laser inscription techniques in chalcogenide glasses and, potentially, for the understanding of their microscopic structure.

Conference Presentation

Citation Download Citation

Romina Diener, Gloria Tabacchi, Stefan Nolte, and Stefano Minardi "Structural modification of gallium lanthanum sulfide glass induced by ultrafast laser inscription", Proc. SPIE 10092, Laser-based Micro- and Nanoprocessing XI, 100920D (17 February 2017); https://doi.org/10.1117/12.2250591

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