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Dispersion of surface plasmons in rectangular, sinusoidal, and incoherent silver gratings (1994)

Fischer, B. ; Fischer, T. M. ; Knoll, W.

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 75 (1994), S. 1577-1581

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: 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.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.356394

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