Theory of surface plasmon generation at nanoslit apertures

Abstract

In this letter, we study the scattering of light by a single subwavelength slit in a metal screen. In contrast to previous theoretical works, we provide a microscopic description of the scattering process by emphasizing the generation of surface plasmons at the slit apertures. The analysis is supported by a rigorous formalism based on a normal-mode-decomposition technique and by a semi-analytical model which provides accurate formulae for the plasmonic generation strengths. The generation is shown to be fairly efficient for metals with a low conductivity, like gold in the visible regime. Verification of the theory is also shown by comparison with recent experimental data [H.F. Schouten et al., Phys. Rev. Lett. 94, 053901 (2005)].

10 pages, 5 figures, article

References in corpus (1)

• Surface plasmons at single nanoholes in Au-films

Cited by in corpus (30)

• Helicity Dependent Directional Surface Plasmon Polariton Excitation Using A Metasurface with Interfacial Phase Discontinuity
• Efficient unidirectional nanoslit couplers for surface plasmons
• Optical properties of metal-dielectric-metal microcavities in the THz frequency range
• A microscopic view of the electromagnetic properties of sub-wavelength metallic surfaces
• Compact antenna for efficient and unidirectional launching and decoupling of surface plasmons
• Experimental verification of the "rainbow" trapping effect in plasmonic graded gratings
• In the diffraction shadow: Norton waves versus surface plasmon-polaritons in the optical region
• Theory on the scattering of light and surface plasmon polaritons by arrays of holes and dimples in a metal film
• Unidirectional sub-diffraction waveguiding based on optical spin-orbit coupling in subwavelength plasmonic waveguides
• Transient behavior of surface plasmon polaritons scattered at a subwavelength groove
• Optical surface waves over metallo-dielectric nanostructures: Sommerfeld integrals revisited
• Modulation of surface plasmon coupling-in by one-dimensional surface corrugation
• Transmission and diffraction properties of a narrow slit in ideal metal
• Analysis of surface waves generated on subwavelength-structured silver films
• Plasmon scattering from holes: from single hole scattering to Young's experiment
• Anomalous light absorption around subwavelength apertures in metal films
• Investigation of Surface Plasmon Resonance in Super-Period Gold Nanoslit Arrays
• Scattering in Multilayered Structures: Diffraction from a Nanohole
• Eigen modes for the problem of anomalous light transmission through subwavelength holes
• The role of surface plasmon polaritons in the optical response of a hole pair
• Impedance generalization for plasmonic waveguides beyond the lumped circuit model
• Transmittance of a subwavelength aperture flanked by a finite groove array \\ placed near the focus of a conventional lens
• Optical Response of Nanostructured Surfaces: Experimental Investigation of the Composite Diffracted Evanescent Wave Model
• Controlling Surface-plasmon-polariton Launching with Hot Spot Cylindrical Waves in a Metallic Slit Structure
• Enhanced Transmission of Light and Particle Waves through Subwavelength Nanoapertures by Far-Field Interference
• Evaluation of surface roughness of metal films using plasmonic Fano resonance in attenuated total reflection
• Excitation of SPP's in graphene by a waveguide mode
• Advanced analytical method based on Green's theorem for light transmission through subwavelength structures of multiple configurations in metal films
• Mechanisms for photon sorting based on slit-groove arrays
• Actively tunable plasmonic lens for subwavelength imaging at different wavelengths