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      Optically thin composite resonant absorber at the near-infrared band: A polarization independent and spectrally broadband configuration

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      Author(s)
      Boratay Alici, K.
      Burak Turhan, A.
      Soukoulis, C.M.
      Özbay, Ekmel
      Date
      2011
      Source Title
      Optics Express
      Print ISSN
      10944087
      Publisher
      Optical Society of American (OSA)
      Volume
      19
      Issue
      15
      Pages
      14260 - 14267
      Language
      English
      Type
      Article
      Item Usage Stats
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      Abstract
      We designed, fabricated, and experimentally characterized thin absorbers utilizing both electrical and magnetic impedance matching at the near-infrared regime. The absorbers consist of four main layers: a metal back plate, dielectric spacer, and two artificial layers. One of the artificial layers provides electrical resonance and the other one provides magnetic resonance yielding a polarization independent broadband perfect absorption. The structure response remains similar for the wide angle of incidence due to the sub-wavelength unit cell size of the constituting artificial layers. The design is useful for applications such as thermal photovoltaics, sensors, and camouflage. ©2011 Optical Society of America.
      Keywords
      Infrared devices
      Magnetic resonance
      Plate metal
      Dielectric spacers
      Near Infrared
      Near-infrared bands
      Photovoltaics
      Polarization independent
      Resonant absorber
      Structure response
      Sub-wavelength
      Thin absorbers
      Unit cell size
      Wide angle
      Polarization
      Permalink
      http://hdl.handle.net/11693/21853
      Published Version (Please cite this version)
      http://dx.doi.org/10.1364/OE.19.014260
      Collections
      • Department of Electrical and Electronics Engineering 3868
      • Department of Physics 2485
      • Nanotechnology Research Center (NANOTAM) 1125
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