Polarization dependence on the optical emission in Nd-doped bioactive W-TCP coatings

Neodymium-doped bioactive wollastonite–tricalcium phosphate (W-TCP:Nd) coatings were fabricated by combining dip-coating and laser floating zone (LFZ) techniques to investigate the dependence of optical emission on polarization. Structural and spectroscopic analyses were performed on both longitudin...

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Detalles Bibliográficos
Autores: Sola, Daniel, Chueca, Eloy, Peña, J. I.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2026
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/425564
Acceso en línea:http://hdl.handle.net/10261/425564
Access Level:acceso abierto
Palabra clave:Optical properties
Luminescence
Rare-earth-doped materials
Laser floating zone
Directionally solidified ceramic eutectics
Bioceramics
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spelling Polarization dependence on the optical emission in Nd-doped bioactive W-TCP coatingsSola, DanielChueca, EloyPeña, J. I.Optical propertiesLuminescenceRare-earth-doped materialsLaser floating zoneDirectionally solidified ceramic eutecticsBioceramicsNeodymium-doped bioactive wollastonite–tricalcium phosphate (W-TCP:Nd) coatings were fabricated by combining dip-coating and laser floating zone (LFZ) techniques to investigate the dependence of optical emission on polarization. Structural and spectroscopic analyses were performed on both longitudinal and transversal sections of the coating to assess the effects of directional solidification on luminescence and vibrational behavior. Micro-Raman spectroscopy revealed that the coating exhibited sharp, well-defined peaks compared to the W-TCP:Nd glass, confirming its glass-ceramic nature. New Raman modes appeared in the longitudinal section, accompanied by red and blue shifts in some bands relative to the transversal section, suggesting the presence of anisotropic stress and orientation-dependent crystal growth. Optical emission measurements showed that while the 4F3/2→4I11/2 transition near 1060 nm was nearly polarization independent, the 4F3/2→4I9/2 transition around 870–900 nm exhibited strong polarization dependence with notable Stark splitting. The relative intensity and spectral position of the Stark components varied systematically with the rotation of the emission polarization. These findings demonstrate that directional solidification induces polarization-dependent optical behavior, indicating potential applications for polarization-sensitive optical tracking and sensing in bioactive implant coatings.This work has been financially supported by Gobierno de Aragón, Research Group T02_23R, Procesado y Caracterización de Cerámicas Estructurales y Funcionales, PROCACEF, and COST Action CA21159, Understanding interaction light—biological surfaces: possibility for new electronic materials and devices.Peer reviewedMultidisciplinary Digital Publishing InstituteGobierno de AragónConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202620262026info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/425564reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.3390/jfb17010038Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4255642026-05-22T06:33:51Z
dc.title.none.fl_str_mv Polarization dependence on the optical emission in Nd-doped bioactive W-TCP coatings
title Polarization dependence on the optical emission in Nd-doped bioactive W-TCP coatings
spellingShingle Polarization dependence on the optical emission in Nd-doped bioactive W-TCP coatings
Sola, Daniel
Optical properties
Luminescence
Rare-earth-doped materials
Laser floating zone
Directionally solidified ceramic eutectics
Bioceramics
title_short Polarization dependence on the optical emission in Nd-doped bioactive W-TCP coatings
title_full Polarization dependence on the optical emission in Nd-doped bioactive W-TCP coatings
title_fullStr Polarization dependence on the optical emission in Nd-doped bioactive W-TCP coatings
title_full_unstemmed Polarization dependence on the optical emission in Nd-doped bioactive W-TCP coatings
title_sort Polarization dependence on the optical emission in Nd-doped bioactive W-TCP coatings
dc.creator.none.fl_str_mv Sola, Daniel
Chueca, Eloy
Peña, J. I.
author Sola, Daniel
author_facet Sola, Daniel
Chueca, Eloy
Peña, J. I.
author_role author
author2 Chueca, Eloy
Peña, J. I.
author2_role author
author
dc.contributor.none.fl_str_mv Gobierno de Aragón
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Optical properties
Luminescence
Rare-earth-doped materials
Laser floating zone
Directionally solidified ceramic eutectics
Bioceramics
topic Optical properties
Luminescence
Rare-earth-doped materials
Laser floating zone
Directionally solidified ceramic eutectics
Bioceramics
description Neodymium-doped bioactive wollastonite–tricalcium phosphate (W-TCP:Nd) coatings were fabricated by combining dip-coating and laser floating zone (LFZ) techniques to investigate the dependence of optical emission on polarization. Structural and spectroscopic analyses were performed on both longitudinal and transversal sections of the coating to assess the effects of directional solidification on luminescence and vibrational behavior. Micro-Raman spectroscopy revealed that the coating exhibited sharp, well-defined peaks compared to the W-TCP:Nd glass, confirming its glass-ceramic nature. New Raman modes appeared in the longitudinal section, accompanied by red and blue shifts in some bands relative to the transversal section, suggesting the presence of anisotropic stress and orientation-dependent crystal growth. Optical emission measurements showed that while the 4F3/2→4I11/2 transition near 1060 nm was nearly polarization independent, the 4F3/2→4I9/2 transition around 870–900 nm exhibited strong polarization dependence with notable Stark splitting. The relative intensity and spectral position of the Stark components varied systematically with the rotation of the emission polarization. These findings demonstrate that directional solidification induces polarization-dependent optical behavior, indicating potential applications for polarization-sensitive optical tracking and sensing in bioactive implant coatings.
publishDate 2026
dc.date.none.fl_str_mv 2026
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/425564
url http://hdl.handle.net/10261/425564
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.3390/jfb17010038
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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