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Optical and structural characterization of femtosecond laser written micro-structures in germanate glass

We report on direct femtosecond laser writing in zinc barium gallo-germanate glasses. A combination of spectroscopic techniques allows to progress in the understanding of the mechanisms taking place depending on the energy. In the first regime (type I, isotropic local index change) up to 0.5 µJ, the...

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Autores principales: Zaiter, Rayan, Lancry, Matthieu, Fargues, Alexandre, Adamietz, Frédéric, Dussauze, Marc, Rodriguez, Vincent, Poumellec, Bertrand, Cardinal, Thierry
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10329654/
https://www.ncbi.nlm.nih.gov/pubmed/37422488
http://dx.doi.org/10.1038/s41598-023-35730-3
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author Zaiter, Rayan
Lancry, Matthieu
Fargues, Alexandre
Adamietz, Frédéric
Dussauze, Marc
Rodriguez, Vincent
Poumellec, Bertrand
Cardinal, Thierry
author_facet Zaiter, Rayan
Lancry, Matthieu
Fargues, Alexandre
Adamietz, Frédéric
Dussauze, Marc
Rodriguez, Vincent
Poumellec, Bertrand
Cardinal, Thierry
author_sort Zaiter, Rayan
collection PubMed
description We report on direct femtosecond laser writing in zinc barium gallo-germanate glasses. A combination of spectroscopic techniques allows to progress in the understanding of the mechanisms taking place depending on the energy. In the first regime (type I, isotropic local index change) up to 0.5 µJ, the main occurrence is the generation of charge traps inspected by luminescence, together with separation of charges detected by polarized second harmonic generation measurements. At higher pulse energies notably at the threshold corresponding to 0.8 µJ or in the second regime (type II modifications corresponding to nanograting formation energy domain), the main occurrence is a chemical change and re-organization of the network evidenced by the appearance of molecular O(2) seen in the Raman spectra. In addition, the polarization dependence of the second harmonic generation in type II indicates that the organization of nanogratings may be perturbed by the laser-imprinted electric field.
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spelling pubmed-103296542023-07-10 Optical and structural characterization of femtosecond laser written micro-structures in germanate glass Zaiter, Rayan Lancry, Matthieu Fargues, Alexandre Adamietz, Frédéric Dussauze, Marc Rodriguez, Vincent Poumellec, Bertrand Cardinal, Thierry Sci Rep Article We report on direct femtosecond laser writing in zinc barium gallo-germanate glasses. A combination of spectroscopic techniques allows to progress in the understanding of the mechanisms taking place depending on the energy. In the first regime (type I, isotropic local index change) up to 0.5 µJ, the main occurrence is the generation of charge traps inspected by luminescence, together with separation of charges detected by polarized second harmonic generation measurements. At higher pulse energies notably at the threshold corresponding to 0.8 µJ or in the second regime (type II modifications corresponding to nanograting formation energy domain), the main occurrence is a chemical change and re-organization of the network evidenced by the appearance of molecular O(2) seen in the Raman spectra. In addition, the polarization dependence of the second harmonic generation in type II indicates that the organization of nanogratings may be perturbed by the laser-imprinted electric field. Nature Publishing Group UK 2023-07-08 /pmc/articles/PMC10329654/ /pubmed/37422488 http://dx.doi.org/10.1038/s41598-023-35730-3 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Zaiter, Rayan
Lancry, Matthieu
Fargues, Alexandre
Adamietz, Frédéric
Dussauze, Marc
Rodriguez, Vincent
Poumellec, Bertrand
Cardinal, Thierry
Optical and structural characterization of femtosecond laser written micro-structures in germanate glass
title Optical and structural characterization of femtosecond laser written micro-structures in germanate glass
title_full Optical and structural characterization of femtosecond laser written micro-structures in germanate glass
title_fullStr Optical and structural characterization of femtosecond laser written micro-structures in germanate glass
title_full_unstemmed Optical and structural characterization of femtosecond laser written micro-structures in germanate glass
title_short Optical and structural characterization of femtosecond laser written micro-structures in germanate glass
title_sort optical and structural characterization of femtosecond laser written micro-structures in germanate glass
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10329654/
https://www.ncbi.nlm.nih.gov/pubmed/37422488
http://dx.doi.org/10.1038/s41598-023-35730-3
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