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Propagation and refraction of left-handed plasmons on a semiconducting substrate covered by graphene

Zivari, A. P ; Sharif University of Technology | 2018

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  1. Type of Document: Article
  2. DOI: 10.1364/OL.43.002010
  3. Publisher: OSA - The Optical Society , 2018
  4. Abstract:
  5. We show that a plasmonic semiconductor substrate can support highly confined surface plasmons when it is covered by a graphene layer. This occurs when the imaginary part of graphene conductivity and real part of the effective permittivity of the surrounding medium become simultaneously negative. Full-wave electromagnetic simulations demonstrate the occurrence of negative refraction and two-dimensional lensing at the interface separating regions supporting conventional right-handed graphene plasmons and left-handed surface plasmon polaritons. © 2018 Optical Society of America
  6. Keywords:
  7. Computerized tomography ; Electromagnetic simulation ; Electromagnetic wave polarization ; Graphene ; Plasmonics ; Refraction ; Surface plasmons ; Confined surfaces ; Effective permittivity ; Full-wave electromagnetic simulation ; Graphene plasmons ; Negative refractions ; Semiconducting substrates ; Semiconductor substrate ; Surface plasmon polaritons ; Substrates
  8. Source: Optics Letters ; Volume 43, Issue 9 , 2018 , Pages 2010-2013 ; 01469592 (ISSN)
  9. URL: https://www.osapublishing.org/ol/abstract.cfm?uri=ol-43-9-2010