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Physics of broadband Brewster transmission through square array of rectangular metallic pillars

Edalatipour, M ; Sharif University of Technology | 2015

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  1. Type of Document: Article
  2. DOI: 10.1364/JOSAB.32.001202
  3. Publisher: OSA - The Optical Society , 2015
  4. Abstract:
  5. The physics behind the broadband Brewster transmission through square arrays made of rectangular metallic pillars is explored by appealing to the effective medium theory. First, an analytical solution is given for the principal electromagnetic mode propagating between the pillars, and then, the mode matching technique is invoked to extract the parameters of the effective medium model. In this fashion, the pillars are homogenized via a diagonal anisotropic tensor and the effects of higher diffracted orders are included in the effective medium theory by attributing a surface conductivity to the surface boundary of the array. It is shown that the former effectuates the wideband Brewster effect while the latter causes the narrowband spoof surface plasmon resonances. The accuracy of the proposed model is verified by full-wave numerical simulations
  6. Keywords:
  7. Anisotropic media ; Seismic waves ; Surface plasmon resonance ; Anisotropic tensors ; Effective medium model ; Effective medium theories ; Electromagnetic modes ; Mode matching technique ; Spoof surface plasmons ; Surface boundaries ; Surface conductivity ; Wave transmission
  8. Source: Journal of the Optical Society of America B: Optical Physics ; Volume 32, Issue 6 , 2015 , Pages 1202-1207 ; 07403224 (ISSN)
  9. URL: https://www.osapublishing.org/josab/abstract.cfm?uri=josab-32-6-1202