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      Single and cascaded, magnetically controllable metasurfaces as terahertz filters

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      Author(s)
      Serebryannikov, A. E.
      Lakhtakia, A.
      Özbay, Ekmel
      Date
      2016
      Source Title
      Optical Society of America. Journal B : Optical Physics
      Print ISSN
      0740-3224
      Publisher
      Optical Society of America OSA
      Volume
      33
      Issue
      5
      Pages
      834 - 841
      Language
      English
      Type
      Article
      Item Usage Stats
      214
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      Abstract
      Transmission of a normally incident, linearly polarized, plane wave through either a single electrically thin metasurface comprising H-shaped subwavelength resonating elements made of magnetostatically controllable InAs or a cascade of several such metasurfaces was simulated in the terahertz regime. Stop bands that are either weakly or strongly controllable can be exhibited by a single metasurface by proper choice of the orientation of the magnetostatic field, and a ∼19%downshift of stop bands in the 0.1-5.5 THz spectral regime is possible on increasing the magnetostatic field strength from 0 to 1 T. Better controllability and wider bandwidths are possible by increasing the number of metasurfaces in a cascade, although increase of the total losses can lead to some restrictions. ON/OFF switching regimes, realizable either by applying/removing the magnetostatic field or just by changing its orientation, exist.
      Keywords
      Bandpass filters
      Terahertz waves
      Linearly polarized
      Magnetostatic field
      Metasurface
      Metasurfaces
      Resonating elements
      Sub-wavelength
      Tera hertz
      Terahertz filters
      Magnetostatics
      Permalink
      http://hdl.handle.net/11693/36953
      Published Version (Please cite this version)
      http://dx.doi.org/10.1364/JOSAB.33.000834
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      • Nanotechnology Research Center (NANOTAM) 1179
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