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dc.contributor.authorÜstün, Kadir
dc.contributor.authorTurhan Sayan, Gönül
dc.date.accessioned2019-05-13T08:57:44Z
dc.date.available2019-05-13T08:57:44Z
dc.date.issued2017
dc.identifier.citationÜstün, K., Turhan Sayan, G. (2017). Ultra-broadband long-wavelength infrared metamaterial absorber based on a double-layer metasurface structure. Journal of the Optical Society of America B: Optical Physics, 34(2), 456-462.en_US
dc.identifier.issn0740-3224
dc.identifier.urihttps://doi.org/10.1364/JOSAB.34.000456
dc.identifier.urihttps://hdl.handle.net/11491/998
dc.description.abstractIn this paper, we report a metamaterial absorber design that achieves a broad absorption band encompassing the whole long-wavelength infrared (LWIR) region. The structure consists of two parallel metasurfaces buried in an amorphous silicon dielectric layer, where the minimum size for all possible planar details does not go below 1 ?m, making the use of standard optical lithography possible for fabrication. The dielectric layer of the structure is placed over a metallic ground plane that inhibits the transmission of incident waves. A substrate underneath the ground plane may also be needed for the purpose of mechanical support. This structure achieves a minimum absorptivity of about 90% in almost the full LWIR band in the case of normal incidence in a polarization-insensitive manner due to the four-fold symmetry of the structural geometry. The absorber also shows reduced sensitivity to off-normal incidence angles, satisfying a minimum absorption level of approximately 80% up to the incidence angle of 45 deg. This broadband metamaterial absorber design is anticipated to find applications in thermal emitters/coolers and in thermal infrared sensors. © 2017 Optical Society of America.en_US
dc.language.isoeng
dc.publisherOSA - The Optical Societyen_US
dc.relation.isversionof10.1364/JOSAB.34.000456en_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subject[Belirlenecek]en_US
dc.titleUltra-broadband long-wavelength infrared metamaterial absorber based on a double-layer metasurface structureen_US
dc.typearticleen_US
dc.relation.journalJournal of the Optical Society of America B: Optical Physicsen_US
dc.departmentHitit Üniversitesi, Mühendislik Fakültesi, Elektrik Elektronik Mühendisliği Bölümüen_US
dc.identifier.volume34en_US
dc.identifier.issue2en_US
dc.identifier.startpage456en_US
dc.identifier.endpage462en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US


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