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

Abstract

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

13 pages, 7 figures. To appear in Optics Express Vol. 16, No. 12

References in corpus (4)

• On thermal effects in solid state lasers: the case of ytterbium-doped materials
• Theory of surface plasmon generation at nanoslit apertures
• Surface wave generation and propagation on metallic subwavelength structures measured by far-field interferometry
• Transient behavior of surface plasmon polaritons scattered at a subwavelength groove

Cited by in corpus (4)

• A microscopic view of the electromagnetic properties of sub-wavelength metallic surfaces
• In the diffraction shadow: Norton waves versus surface plasmon-polaritons in the optical region
• Oblique launching of optical surface waves by a subwavelength slit
• Vertical dipole above a dielectric or metallic half-space - energy flow considerations