Role of the La/K Compositional Ratio in the Properties of Waveguides Written by Fs-Laser Induced Element Redistribution in Phosphate-Based Glasses

The local modification of the composition of glasses by high repetition femtosecond laser irradiation is an attractive method for producing photonic devices. Recently, the successful production of waveguides with a refractive index contrast (Δn) above 10−2 by fs-laser writing has been demonstrated i...

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Authors: Moreno-Zarate, Pedro, Muñoz, Francisco, Sotillo Buzarra, Belén, Macias-Montero, Manuel, Atienzar, Julia, Garcia-Pardo, Marina, Fernández Sánchez, Paloma, Serna, Rosalia, Solis, Javier
Format: article
Publication Date:2020
Country:España
Institution:Universidad Complutense de Madrid (UCM)
Repository:Docta Complutense
Language:English
OAI Identifier:oai:docta.ucm.es:20.500.14352/8102
Online Access:https://hdl.handle.net/20.500.14352/8102
Access Level:Open access
Keyword:fs-laser writing
photonic devices
glass
ion migration
element redistribution
waveguides
refractive index contrast
Física de materiales
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spelling Role of the La/K Compositional Ratio in the Properties of Waveguides Written by Fs-Laser Induced Element Redistribution in Phosphate-Based GlassesMoreno-Zarate, PedroMuñoz, FranciscoSotillo Buzarra, BelénMacias-Montero, ManuelAtienzar, JuliaGarcia-Pardo, MarinaFernández Sánchez, PalomaSerna, RosaliaSolis, Javierfs-laser writingphotonic devicesglassion migrationelement redistributionwaveguidesrefractive index contrastFísica de materialesThe local modification of the composition of glasses by high repetition femtosecond laser irradiation is an attractive method for producing photonic devices. Recently, the successful production of waveguides with a refractive index contrast (Δn) above 10−2 by fs-laser writing has been demonstrated in phosphate glasses containing La2O3 and K2O modifiers. This large index contrast has been related to a local enrichment in lanthanum in the light guiding region accompanied by a depletion in potassium. In this work, we have studied the influence of the initial glass composition on the performance of waveguides that are produced by fs-laser induced element redistribution (FLIER) in phosphate-based samples with different La and K concentrations. We have analyzed the contribution to the electronic polarizability of the different glass constituents based on refractive index measurements of the untreated samples, and used it to estimate the expected index contrast caused by the experimentally measured local compositional changes in laser written guiding structures. These estimated values have been compared to experimental ones that are derived from near field images of the guided modes with an excellent agreement. Therefore, we have developed a method to estimate before-hand the expected index contrast in fs-laser written waveguides via FLIER for a given glass composition. The obtained results stress the importance of considering the contribution to the polarizability of all the moving species when computing the expected refractive index changes that are caused by FLIER processes.MDPIUniversidad Complutense de Madrid20202020-03-1120202020-03-11journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/8102reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución 3.0 Españahttps://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/81022026-06-02T12:44:21Z
dc.title.none.fl_str_mv Role of the La/K Compositional Ratio in the Properties of Waveguides Written by Fs-Laser Induced Element Redistribution in Phosphate-Based Glasses
title Role of the La/K Compositional Ratio in the Properties of Waveguides Written by Fs-Laser Induced Element Redistribution in Phosphate-Based Glasses
spellingShingle Role of the La/K Compositional Ratio in the Properties of Waveguides Written by Fs-Laser Induced Element Redistribution in Phosphate-Based Glasses
Moreno-Zarate, Pedro
fs-laser writing
photonic devices
glass
ion migration
element redistribution
waveguides
refractive index contrast
Física de materiales
title_short Role of the La/K Compositional Ratio in the Properties of Waveguides Written by Fs-Laser Induced Element Redistribution in Phosphate-Based Glasses
title_full Role of the La/K Compositional Ratio in the Properties of Waveguides Written by Fs-Laser Induced Element Redistribution in Phosphate-Based Glasses
title_fullStr Role of the La/K Compositional Ratio in the Properties of Waveguides Written by Fs-Laser Induced Element Redistribution in Phosphate-Based Glasses
title_full_unstemmed Role of the La/K Compositional Ratio in the Properties of Waveguides Written by Fs-Laser Induced Element Redistribution in Phosphate-Based Glasses
title_sort Role of the La/K Compositional Ratio in the Properties of Waveguides Written by Fs-Laser Induced Element Redistribution in Phosphate-Based Glasses
dc.creator.none.fl_str_mv Moreno-Zarate, Pedro
Muñoz, Francisco
Sotillo Buzarra, Belén
Macias-Montero, Manuel
Atienzar, Julia
Garcia-Pardo, Marina
Fernández Sánchez, Paloma
Serna, Rosalia
Solis, Javier
author Moreno-Zarate, Pedro
author_facet Moreno-Zarate, Pedro
Muñoz, Francisco
Sotillo Buzarra, Belén
Macias-Montero, Manuel
Atienzar, Julia
Garcia-Pardo, Marina
Fernández Sánchez, Paloma
Serna, Rosalia
Solis, Javier
author_role author
author2 Muñoz, Francisco
Sotillo Buzarra, Belén
Macias-Montero, Manuel
Atienzar, Julia
Garcia-Pardo, Marina
Fernández Sánchez, Paloma
Serna, Rosalia
Solis, Javier
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv fs-laser writing
photonic devices
glass
ion migration
element redistribution
waveguides
refractive index contrast
Física de materiales
topic fs-laser writing
photonic devices
glass
ion migration
element redistribution
waveguides
refractive index contrast
Física de materiales
description The local modification of the composition of glasses by high repetition femtosecond laser irradiation is an attractive method for producing photonic devices. Recently, the successful production of waveguides with a refractive index contrast (Δn) above 10−2 by fs-laser writing has been demonstrated in phosphate glasses containing La2O3 and K2O modifiers. This large index contrast has been related to a local enrichment in lanthanum in the light guiding region accompanied by a depletion in potassium. In this work, we have studied the influence of the initial glass composition on the performance of waveguides that are produced by fs-laser induced element redistribution (FLIER) in phosphate-based samples with different La and K concentrations. We have analyzed the contribution to the electronic polarizability of the different glass constituents based on refractive index measurements of the untreated samples, and used it to estimate the expected index contrast caused by the experimentally measured local compositional changes in laser written guiding structures. These estimated values have been compared to experimental ones that are derived from near field images of the guided modes with an excellent agreement. Therefore, we have developed a method to estimate before-hand the expected index contrast in fs-laser written waveguides via FLIER for a given glass composition. The obtained results stress the importance of considering the contribution to the polarizability of all the moving species when computing the expected refractive index changes that are caused by FLIER processes.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020-03-11
2020
2020-03-11
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/8102
url https://hdl.handle.net/20.500.14352/8102
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución 3.0 España
https://creativecommons.org/licenses/by/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución 3.0 España
https://creativecommons.org/licenses/by/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869405864586117120
score 15.300719

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