Dynamical diffraction explanation of the anomalous transmission of light through metallic gratings

Research output: Contribution to journalArticle

274 Citations (Scopus)

Abstract

In this paper, it is pointed out that the light transmission anomalies observed for, thin-film metallic gratings can be explained entirely in terms of dynamical diffraction theory. Surface plasmons are an intrinsic component of the diffracted wave field and, as such, play no independent causal role in the anomalies, as has been implied by others. The dynamical scattering matrix for the Bloch-wave modes of the diffracted photon wave field (E, H) is derived for a three-dimensionally periodic medium with arbitrary dielectric constant. A new theoretical treatment and numerical results are presented for a one-dimensional array of slits. In model metallic slit arrays, with negative dielectric constant, 100% and 0% transmission is possible at different wavelengths in the zero-order beam. In slit arrays, both propagating and evanescent modes (traditional surface plasmons) are strongly excited at both the peak and the minimum transmission conditions.

Original languageEnglish (US)
Article number195105
Pages (from-to)1951051-19510511
Number of pages17559461
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume66
Issue number19
StatePublished - Nov 15 2002
Externally publishedYes

Fingerprint

Wave transmission
slits
Plasmons
Diffraction
gratings
plasmons
Permittivity
diffraction
permittivity
anomalies
light transmission
S matrix theory
Light transmission
Photons
Scattering
Thin films
Wavelength
photons
thin films
wavelengths

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Dynamical diffraction explanation of the anomalous transmission of light through metallic gratings. / Treacy, Michael.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 66, No. 19, 195105, 15.11.2002, p. 1951051-19510511.

Research output: Contribution to journalArticle

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