|
|
| VOLUME 82 | ISSUE 9 |
PAGE 678
|
| Surface-plasmon vortices in nanostructured metallic films |
A. A. Ezhov, S. A. Magnitskii, N. S. Maslova, D. A. Muzychenko, A. A. Nikulin, V. I. Panov
Department of Physics, M. V. Lomonosov Moscow State University, 119992 Moscow, Russia
|
PACS: 74.50.+r, 74.80.Fp
|
Abstract
Light scattering by a small protrusion on a metal
surface is analyzed within the framework of perturbation theory.
Upon normal incidence of linearly-polarized monochromatic wave,
slight deviations of the protrusion shape from a circularly
symmetric one lead to formation of optical vortices in the
near-field region due resonant excitation of circular surface
plasmons. This agrees with the results of scanning near-field
optical microscopy experiments revealing distinct spiral patterns
in the in-plane near-field intensity distribution for metallized
nanostructured polymer substrates.
|
|
|
Download PS file (GZipped, 714.3K)
|
Download PDF file (334.8K)
|
|
Список работ, цитирующих данную статью, см. здесь.
List of articles citing this article can be found here.
|
|
Home