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      Wide-angle reflection-mode spatial filtering and splitting with photonic crystal gratings and single-layer rod gratings

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      Author(s)
      Serebryannikov, A. E.
      Lalanne, P.
      Petrov, A. Y.
      Özbay, Ekmel
      Date
      2014
      Source Title
      Optics Letters
      Print ISSN
      0146-9592
      Publisher
      Optical Society of American (OSA)
      Volume
      39
      Issue
      21
      Pages
      6193 - 6196
      Language
      English
      Type
      Article
      Item Usage Stats
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      Abstract
      New diffractive optical elements offering a frequency tolerant, very efficient, high-pass and bandpass spatial filtering over a broad range of incidence angles are demonstrated by numerical simulations. The device operates in reflection mode owing to the (nearly) perfect blazing. It relies on two-dimensional square-lattice photonic crystals composed of dielectric rods with simple corrugations at the interface. Similar performance can be obtained with gratings composed of a single rod layer placed in the near field of a metal mirror, indicating a route to geometries that can be easily fabricated with modern nanotechnologies. Also equal splitting between zero and first negative orders can be obtained for incidence-angle variations that are wider than 60°. © 2014 Optical Society of America
      Keywords
      Beamforming
      Angle variation
      Dielectric rods
      Incidence angles
      Metal mirror
      Reflection modes
      Spatial filterings
      Square-lattice
      Wide-angle reflection
      Photonic crystals
      Permalink
      http://hdl.handle.net/11693/26582
      Published Version (Please cite this version)
      http://dx.doi.org/10.1364/OL.39.006193
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      • Nanotechnology Research Center (NANOTAM) 1179
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