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    A slow light fishnet-like absorber in the millimeter-wave range

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    Date
    2011
    Author
    Navarro Cía, Miguel Upna Orcid
    Torres Landívar, Víctor Upna
    Beruete Díaz, Miguel Upna Orcid
    Sorolla Ayza, Mario Upna
    Version
    Acceso abierto / Sarbide irekia
    Type
    Artículo / Artikulua
    Version
    Versión publicada / Argitaratu den bertsioa
    Impact
     
     
     
    10.2528/PIER11053105
     
     
     
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    Abstract
    A novel route to achieve a narrowband free-space electromagnetic absorber in any range of the spectrum based on stacked subwavelength hole arrays is proposed. The absorption is obtained by means of a slow light mode inside a fishnet-like engineered structure and exploiting the unavoidable misalignments and bucklings of the free-standing stack. An incoming pulse becomes permanently trapped in the ... [++]
    A novel route to achieve a narrowband free-space electromagnetic absorber in any range of the spectrum based on stacked subwavelength hole arrays is proposed. The absorption is obtained by means of a slow light mode inside a fishnet-like engineered structure and exploiting the unavoidable misalignments and bucklings of the free-standing stack. An incoming pulse becomes permanently trapped in the structure due to the near zero group velocity which causes an enhancement of the radiation-structure interaction that leads to a huge increment of losses arising from the finite conductivity of the metal as well as arrangement tolerances. This approach is studied not only by simulation but also experimentally under normal incidence at millimeter wavelengths. Moreover, a basic grasp about the angular dependence of the structure is given by analyzing the 2D dispersion diagram. It shows that this scheme may also display high absorption under oblique incidence for s-polarization (or TE-polarization), whereas p-polarization (TM-polarization) would degrade its performance. [--]
    Subject
    Subwavelength hole arrays, Extraordinary optical transmission, Negative, Refraction, Microwave absorber, Prism, Metamaterials, Crystals, Antennas, Plates
     
    Publisher
    EMW Publishing
    Published in
    Progress In Electromagnetics Research, Vol. 118, 287-301, 2011.
    Description
    UPNa. Departamento de Ingeniería Eléctrica y Electrónica. Laboratorio de Ondas Milimétricas y Terahercios
    Departament
    Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica y Electrónica / Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektriko eta Elektronikoa Saila
     
    Publisher version
    https://dx.doi.org/10.2528/PIER11053105
    URI
    https://hdl.handle.net/2454/10826
    Sponsorship
    Work sponsored by the Spanish Government and E. U. FEDER funds under contracts Consolider Engineering Metamaterials CSD2008-00066 and TEC2008-06871-C02-01.
    Appears in Collections
    • Artículos de revista - Aldizkari artikuluak [4312]
    • Artículos de revista DIEE - IEES Aldizkari artikuluak [359]
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