Dispersion of surface plasmons in rectangular, sinusoidal, and incoherent silver gratings
- 1 February 1994
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 75 (3) , 1577-1581
- https://doi.org/10.1063/1.356394
Abstract
The dispersion behavior of surface plasmons on silver gratings in the center of the first Brillouin zone is determined by measurements of the reflected light as a function of amplitude and of the profile of the gratings. We studied the dispersion relation of sinusoidal gratings, rectangular gratings, and incoherent gratings. We found a strict relationship between the profile of the grating and the dispersion relation of the surface plasmons. Our experiments showed at small amplitudes a crossing of the dispersion branches without a gap. For higher amplitudes a frequency or a momentum gap occurred depending on whether the profile had higher Fourier components or not. The experimental results are in accordance with numerical simulations.This publication has 4 references indexed in Scilit:
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- Surface plasmon enhanced Raman spectra of monolayer assembliesThe Journal of Chemical Physics, 1982
- Diffraction of light from weakly modulated silver surfacesOptics Communications, 1977
- Radiative decay of surface plasmons excited by fast electrons on periodically modulated silver surfacesJournal of Physics C: Solid State Physics, 1977