Quenched Optical Transmission in Ultrathin Subwavelength Plasmonic Gratings

Abstract

We discuss the optical properties of one-dimensional ultrathin subwavelength, metallic gratings under transverse magnetic excitation, with particular attention to the phenomenon of quenched transmission, recently highlighted in several optical experiments. In particular, we consider a grating with thickness comparable to or less than the metal skin depth, showing how the geometrical properties of the grating can dramatically modify its transmission properties, often in a counterintuitive way. We study the role played by short-range and long-range surface plasmons (SPs) and localized SP resonances, showing that quenched transmission must be ascribed to localized resonance effects, while long-range and short-range SPs play only a marginal role in this anomalous effect.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2011
Accession Number
ADA538166

Entities

People

  • A. Alu
  • G. D'aguanno
  • M. J. Bloemer
  • N. Mattiucci

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Electric Fields
  • Engineering
  • Excitation
  • Films
  • Frequency
  • Geometry
  • Materials Science
  • Narrowband
  • Optical Properties
  • Plasmons
  • Refractive Index
  • Resonance
  • Surface Plasmon Resonance
  • Surface Plasmons
  • Thickness
  • Transverse
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Nanofabrication and Microfabrication.
  • Plasma Physics / Magnetohydrodynamics