Light Scattering from a Deep Metallic Grating.

Abstract

The conditions under which the Rayleigh hypothesis is exact and the convergence properties of the Rayleigh expansion are considered. The identification of the cause of the deficiency of this expansion suggests an alternative dressed expansion with presumably simpler convergence properties. This proposition is checked for a sinusoidal grating (SG), for which convergence is found for an arbitrary value of beta = (2pi) g/d, where g and d denote the height and periodicity of the SG, respectively. The dressed expansion is used to analyze the surface plasmon dispersion and local field enhancement distribution pertaining to the SG in the limit as beta goes to infinity. The dispersion relation is comprised of two bands. The local field enhancement predicts stronger fields at the bottoms of the troughs than at the peaks of the SG. Keywords: Light scattering; Deep metallic grating; Rayleigh hypothesis; Dressed expansion; Surface plasmon dispersion; Local field enhancement.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1986
Accession Number
ADA166319

Entities

People

  • Dan Agassi
  • Thomas F. George

Organizations

  • University at Buffalo

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Air Force
  • Chemical Engineering
  • Chemistry
  • Dispersion Relations
  • Light Scattering
  • Maryland
  • Materials
  • Materials Science
  • Military Research
  • New York
  • Physics
  • Scattering
  • Solid State Physics
  • Surface Plasmons
  • United States
  • Universities

Readers

  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.
  • Seismology
  • Statistical inference.