Abstract

Surface plasmon excitation that is due to a single or a structured circular aperture in a flat metallic screen is investigated theoretically and numerically with a view to enhancing the electric field close to the metallic surface. A systematic study of the homogeneous solution of the electromagnetic scattering problem is made with cylindrical coordinates, expanding Maxwell equations on a Fourier–Bessel basis. A perturbation analysis devoted to simple physical analyses of different types of cylindrical nanostructure is developed for the optimization of plasmon excitation by a normally incident linearly polarized monochromatic plane wave. The conclusions drawn from this analysis agree well with the results of rigorous electromagnetic calculations obtained with the differential theory of diffraction in cylindrical coordinates.

© 2005 Optical Society of America

Surface plasmon excitation on a single subwavelength hole in a metallic sheet

Evgeny Popov, Nicolas Bonod, Michel Nevière, Hervé Rigneault, Pierre-François Lenne, and Patrick Chaumet
Appl. Opt. 44(12) 2332-2337 (2005)

Enhanced transmission of light through a circularly structured aperture

Evgeny Popov, Michel Nevière, Anne-Laure Fehrembach, and Nicolas Bonod
Appl. Opt. 44(32) 6898-6904 (2005)

High transmission efficiency for surface plasmon resonance by use of a dielectric grating

Cédric Lenaerts, Fabrice Michel, Bernard Tilkens, Yves Lion, and Yvon Renotte
Appl. Opt. 44(28) 6017-6022 (2005)

Incidence angles for optimized ATR excitation of surface plasmons

Eric F. Y. Kou and Theodor Tamir
Appl. Opt. 27(19) 4098-4103 (1988)

Field enhancement in a circular aperture surrounded by a single channel groove

Nicolas Bonod, Evgeny Popov, Davy Gérard, Jérome Wenger, and Hervé Rigneault
Opt. Express 16(3) 2276-2287 (2008)