Ultrathin photonic absorber with wideband polarization independency characteristics using fractal combinations of ring resonators on ZnSe substrate

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dc.authorid0000-0002-4088-8353
dc.authorid0000-0002-6980-5902
dc.contributor.authorAlkurt, Maide Erdogan
dc.contributor.authorUnal, Emin
dc.contributor.authorKaraaslan, Muharrem
dc.contributor.authorAkgol, Oguzhan
dc.contributor.authorAksoy, Murat
dc.date.accessioned2026-02-08T15:15:43Z
dc.date.available2026-02-08T15:15:43Z
dc.date.issued2024
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractWe present a combination of split ring resonators for THz absorption applications. This combination creates a fractal organization with an ultra-wideband characteristic between 45.5 and 56.7 THz. During the design process, a very thin ZnSe substrate with a thickness of 0.6 mu m was used, and copper resonators were placed on the substrate layer. The back layer was also covered with a very thin layer of copper to prevent the transmission of electromagnetic waves. The proposed design exhibits a wideband absorption characteristic with peak resonance points at 46.36, 47.57, 48.98, 50.39, 52.97, 54.62, and 56.1 THz. Furthermore, the electric field distributions at these peak resonances were obtained to further explore the absorption characteristics. The absorption response was also analyzed for both transverse electric and transverse magnetic modes to demonstrate mode stabilization in the absorption performance. Finally, polarization and angle of incidence variations were studied, and polarization independence was achieved. This design is a promising candidate for THz imaging and stealth applications due to its wideband performance.
dc.description.sponsorshipCouncil of Higher Education of Turkey [100/200 YOK]
dc.description.sponsorshipMaide Erdogan Alkurt was partially supported by the Council of Higher Education of Turkey under the grant title of 100/200 YOK.
dc.identifier.doi10.1117/1.OE.63.11.115102
dc.identifier.issn0091-3286
dc.identifier.issn1560-2303
dc.identifier.issue11
dc.identifier.scopus2-s2.0-85211040841
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1117/1.OE.63.11.115102
dc.identifier.urihttps://hdl.handle.net/20.500.12885/5925
dc.identifier.volume63
dc.identifier.wosWOS:001373814700022
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpie-Soc Photo-Optical Instrumentation Engineers
dc.relation.ispartofOptical Engineering
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzWOS_KA_20260207
dc.subjectterahertz absorber
dc.subjectring resonator
dc.subjectZnSe substrate
dc.subjectfractal combination
dc.titleUltrathin photonic absorber with wideband polarization independency characteristics using fractal combinations of ring resonators on ZnSe substrate
dc.typeArticle

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