Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Approximate model for surface-plasmon generation at slit apertures

Not Accessible

Your library or personal account may give you access

Abstract

We present a semianalytical model that quantitatively predicts the scattering of light by a single subwavelength slit in a thick metal screen. In contrast to previous theoretical works related to the transmission properties of the slit, the analysis emphasizes the generation of surface plasmons at the slit apertures. The model relies on a two-stage scattering mechanism, a purely geometric diffraction problem in the immediate vicinity of the slit aperture followed by the launching of a bounded surface-plasmon wave on the flat interfaces surrounding the aperture. By comparison with a full electromagnetic treatment, the model is shown to provide accurate formulas for the plasmonic generation strength coefficients, even for metals with a low conductivity. Limitations are outlined for large slit widths (>λ) or oblique incidence (>30°) when the slit is illuminated by a plane wave.

© 2006 Optical Society of America

Full Article  |  PDF Article
More Like This
On the phase of plasmons excited by slits in a metal film

O.T.A. Janssen, H.P. Urbach, and G.W. ’t Hooft
Opt. Express 14(24) 11823-11832 (2006)

Role of radiation and surface plasmon polaritons in the optical interactions between a nano-slit and a nano-groove on a metal surface

Long Chen, Jacob T. Robinson , and Michal Lipson
Opt. Express 14(26) 12629-12636 (2006)

Surface plasmon polaritons locally excited on the ridges of metallic gratings

B. Wang and P. Lalanne
J. Opt. Soc. Am. A 27(6) 1432-1441 (2010)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (25)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved