Conformal Talbot-effect-focusing performance of nested gallium-doped zinc oxide nanorings at communication wavelength

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dc.contributor.authorAslan, Ekin
dc.date.accessioned2024-09-18T20:11:46Z
dc.date.available2024-09-18T20:11:46Z
dc.date.issued2020
dc.departmentHatay Mustafa Kemal Üniversitesien_US
dc.description.abstractMetasurfaces, artificial microand nano-photonic structures can modify wavefront of electromagnetic waves to the desired form. Metalenses are the metasurfaces assuming the role of focusing light. The focusing performance of nested gallium-doped zinc oxide nanoring-arrangements functionalized by conformal Talbot effect is inves-tigated for communication wavelength 1550 nm. The Talbot-effect-focusing performance of the 2D finite-sized structures are computationally demonstrated in a systematically manner. The impact of geometrical parameters on the primary focal spot and focusing performance parameters such as numerical aperture, full-width half maximum, focal depth, efficiency, and fill-factor is examined and summarized via finite difference time-domain numerical simulations. All samples presenting an alternative plasmonic option in this work yield a good focusing efficiency of >50%, absolute efficiency of >19%, numerical aperture up to 0.67, focal depth up to 1.4 times of focal length, and a wide focal spot size up to 6.0654 times of operating wavelength. As a result of finite-sized construction, conformal Talbot effect is examined from a novel alternative plasmonics perspective. Thus, a new planarized focusing platform is employed by using a nanostructured microlens, acting conformal transformation optics devices with low-cost and light capturing tolerance.en_US
dc.description.sponsorshipScientific Research Projects Coordination Center of Hatay Mustafa Kemal University [20]en_US
dc.description.sponsorshipThe work described in this paper is supported by the Scientific Research Projects Coordination Center of Hatay Mustafa Kemal University (Project ID: 20.M.036).en_US
dc.identifier.doi10.1016/j.photonics.2020.100839
dc.identifier.issn1569-4410
dc.identifier.issn1569-4429
dc.identifier.scopus2-s2.0-85090410670en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1016/j.photonics.2020.100839
dc.identifier.urihttps://hdl.handle.net/20.500.12483/9064
dc.identifier.volume42en_US
dc.identifier.wosWOS:000589588400004en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofPhotonics and Nanostructures-Fundamentals and Applicationsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectConformal Talbot effecten_US
dc.subjectMetalensen_US
dc.subjectAlternative plasmonicsen_US
dc.titleConformal Talbot-effect-focusing performance of nested gallium-doped zinc oxide nanorings at communication wavelengthen_US
dc.typeArticleen_US

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