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      • Faculty of Engineering
      • Department of Electrical and Electronics Engineering
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      Focusing of THz waves with a microsize parabolic reflector made of graphene in the free space

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      Author(s)
      Oguzer T.
      Altintas, A.
      Nosich A.I.
      Date
      2017
      Source Title
      Journal of the European Optical Society
      Print ISSN
      19902573
      Publisher
      Springer International Publishing
      Volume
      13
      Issue
      1
      Language
      English
      Type
      Article
      Item Usage Stats
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      Abstract
      Background: The scattering of H- and E-polarized plane waves by a two-dimensional (2-D) parabolic reflector made of graphene and placed in the free space is studied numerically. Methods: To obtain accurate results we use the Method of Analytical Regularization. Results: The total scattering cross-section and the absorption cross-section are computed, together with the field magnitude in the geometrical focus of reflector. The surface plasmon resonances are observed in the H-case. The focusing ability of the reflector is studied in dependence of graphene’s chemical potential, frequency, and reflector’s depth. Conclusions: It is found that there exists an optimal range of frequencies where the focusing ability reaches maximum values. The reason is the quick degradation of graphene’s surface conductivity with frequency. © 2017, The Author(s).
      Keywords
      Analytical regularization
      Focusing ability
      Graphene reflector
      Integral equation
      Focusing
      Graphene
      Integral equations
      Surface plasmon resonance
      Terahertz waves
      Absorption cross sections
      Analytical regularization
      Method of analytical regularization
      Parabolic reflector
      Polarized plane waves
      Surface conductivity
      Total scattering cross sections
      Two Dimensional (2 D)
      Reflection
      Permalink
      http://hdl.handle.net/11693/37044
      Published Version (Please cite this version)
      http://dx.doi.org/10.1186/s41476-017-0041-0
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      • Department of Electrical and Electronics Engineering 3702
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