A comprehensive study of optical resonances in metals, dielectrics, and excitonic materials in double interface structures

Imas González, José Javier; Matías Maestro, Ignacio; Del Villar, Ignacio; Ozcariz Celaya, Aritz; Vitoria Pascual, Ignacio; Ruiz Zamarreño, Carlos

A comprehensive study of optical resonances in metals, dielectrics, and excitonic materials in double interface structures

dc.contributor.author	Imas González, José Javier
dc.contributor.author	Matías Maestro, Ignacio
dc.contributor.author	Del Villar, Ignacio
dc.contributor.author	Ozcariz Celaya, Aritz
dc.contributor.author	Vitoria Pascual, Ignacio
dc.contributor.author	Ruiz Zamarreño, Carlos
dc.contributor.department	Ingeniería Eléctrica, Electrónica y de Comunicación	es_ES
dc.contributor.department	Ingeniaritza Elektrikoa, Elektronikoa eta Telekomunikazio Ingeniaritza	eu
dc.contributor.department	Institute of Smart Cities - ISC	en
dc.date.accessioned	2024-11-19T12:23:02Z
dc.date.available	2024-11-19T12:23:02Z
dc.date.issued	2025-02-01
dc.date.updated	2024-11-19T12:13:13Z
dc.description.abstract	From an optical perspective, depending on the relationship between the real (n) and imaginary (k) parts of its refractive index, three broad categories of materials can be distinguished: metals (k ¿ n), dielectrics (n ¿ k), and materials in which n ¿ k (termed here excitonic materials). The modes and optical resonances that appear in a thin film bounded by two dielectrics with similar refractive index, what we call here a double interface structure, have been widely studied in the case of metals, but not for dielectrics, or materials with n ¿ k. In this work, we propose a new approach, based on employing the phase matching condition to correlate the resonances that appear in the wavelength versus incident angle color maps of the reflected power with the modal analysis of the cross section of the structure. This analysis is performed, using an attenuated total reflection (ATR) setup, for thin film materials that belong to each of the mentioned categories: a metal (gold, Au), a dielectric (titanium dioxide, TiO2), and a material with n ¿ k (chromium, Cr). The theoretical analysis is supported with experimental results. It is demonstrated that this method enables to identify any resonance at any wavelength or incident angle, being valid for all three types of materials. Therefore, it is considered the suggested approach will help the research in these materials and in the double interface structure in the optics and photonics field.	en
dc.description.sponsorship	This work was supported by Agencia Estatal de Investigación (PID2022-137437OB-I00).
dc.format.mimetype	application/pdf	en
dc.format.mimetype	application/msword	en
dc.identifier.citation	Imas, J. J., Matías, I. R., Del Villar, I., Ozcáriz, A., Vitoria, I., Zamarreño, C. R. (2025). A comprehensive study of optical resonances in metals, dielectrics, and excitonic materials in double interface structures. Optics and Laser Technology, 181, 1-9. https://doi.org/10.1016/j.optlastec.2024.111771.
dc.identifier.doi	10.1016/j.optlastec.2024.111771
dc.identifier.issn	0030-3992
dc.identifier.uri	https://academica-e.unavarra.es/handle/2454/52537
dc.language.iso	eng
dc.publisher	Elsevier
dc.relation.ispartof	Optics and Laser Technology (2025), vol. 181, part. B, 111771
dc.relation.projectID	info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-137437OB-I00/ES/
dc.relation.publisherversion	https://doi.org/10.1016/j.optlastec.2024.111771
dc.rights	© 2024 The Author(s). This is an open access article under the CC BY-NC-ND license.
dc.rights.accessRights	info:eu-repo/semantics/openAccess
dc.rights.uri	https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject	Double interface structure	en
dc.subject	Long range surface exciton polariton (LRSEP)	en
dc.subject	Long range surface plasmon polariton (LRSPP)	en
dc.subject	Lossy mode resonance (LMR)	en
dc.subject	Optical resonances	en
dc.subject	Surface plasmon resonance (SPR)	en
dc.subject	Thin film	en
dc.title	A comprehensive study of optical resonances in metals, dielectrics, and excitonic materials in double interface structures	en
dc.type	info:eu-repo/semantics/article
dc.type.version	info:eu-repo/semantics/publishedVersion
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