Grating coupling to surface plasma waves. i. first-order coupling

Saleem H. Zaidi, M. Yousaf, S. R J Brueck

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

A systematic experimental and theoretical study of first-order grating coupling to surface plasma waves existing at an air-Ag interface is presented. The experiment extends beyond previous work to grating depths comparable with the grating period. The grating profiles range from sinusoidal to rectangular. For TM-polarized incident radiation this grating depth range includes the entire spectrum of surface-plasma-wave-radiation coupling-from underdamped, to nearly 100%o coupling, to overdamped and the disappearance of the resonance from the zero-order reflectance measurements. Strong polarization and absorption effects are observed for the deepest gratings. A simple theoretical model, based on the Rayleigh hypothesis and retaining only resonant diffraction terms without a small-signal approximation being made, provides good agreement with the experimental results.

Original languageEnglish
Pages (from-to)770-779
Number of pages10
JournalJournal of the Optical Society of America B: Optical Physics
Volume8
Issue number4
DOIs
Publication statusPublished - 1991
Externally publishedYes

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plasma waves
gratings
incident radiation
retaining
electromagnetic radiation
reflectance
air
polarization
profiles
approximation
diffraction

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Statistical and Nonlinear Physics

Cite this

Grating coupling to surface plasma waves. i. first-order coupling. / Zaidi, Saleem H.; Yousaf, M.; Brueck, S. R J.

In: Journal of the Optical Society of America B: Optical Physics, Vol. 8, No. 4, 1991, p. 770-779.

Research output: Contribution to journalArticle

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