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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 12 — Jun. 9, 2008
  • pp: 9073–9086

Optical surface waves over metallo-dielectric nanostructures: Sommerfeld integrals revisited

Bora Ung and Yunlong Sheng  »View Author Affiliations

Optics Express, Vol. 16, Issue 12, pp. 9073-9086 (2008)

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The asymptotic closed-form solution to the fundamental diffraction problem of a linear horizontal Hertzian dipole radiating over the metallo-dielectric interface is provided. For observation points just above the interface, we confirm that the total surface near-field is the sum of two components: a long-range surface plasmon polariton and a short-range radiative cylindrical wave. The relative phases, amplitudes and damping functions of each component are quantitatively elucidated through simple analytic expressions for the entire range of propagation: near and asymptotic. Validation of the analytic solution is performed by comparing the predictions of a dipolar model with recently published data.

© 2008 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(240.6680) Optics at surfaces : Surface plasmons
(240.6690) Optics at surfaces : Surface waves
(260.3910) Physical optics : Metal optics
(310.2790) Thin films : Guided waves
(050.6624) Diffraction and gratings : Subwavelength structures

ToC Category:
Optics at Surfaces

Original Manuscript: April 8, 2008
Revised Manuscript: May 27, 2008
Manuscript Accepted: May 30, 2008
Published: June 4, 2008

Bora Ung and Yunlong Sheng, "Optical surface waves over metallo-dielectric nanostructures: Sommerfeld integrals revisited," Opt. Express 16, 9073-9086 (2008)

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