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Updated: May 16, 2026

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
07:39

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

Published on: July 21, 2018

Surface plasmons on zig-zag gratings.

Thomas J Constant1, Tim S Taphouse, Helen J Rance

  • 1Department of Physics and Astronomy, University of Exeter, Stocker Road, Exeter, Devon, EX4 4QL, UK. t.j.constant@ex.ac.uk

Optics Express
|November 29, 2012
PubMed
Summary
This summary is machine-generated.

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Researchers investigated optical excitation of surface plasmons polaritons (SPPs) using a zig-zag diffraction grating. SPP excitation was observed only for TE-polarized light due to the grating

Area of Science:

  • Optics and Photonics
  • Materials Science

Background:

  • Surface plasmons polaritons (SPPs) are coherent oscillations of free electrons at a metal-dielectric interface.
  • Diffraction gratings are periodic structures used to diffract light.
  • Zig-zag gratings offer unique symmetry properties for optical manipulation.

Purpose of the Study:

  • To explore the optical excitation of SPPs on a novel zig-zag diffraction grating.
  • To investigate the polarization dependence of SPP excitation on this specific grating geometry.
  • To understand the role of broken-mirror symmetry in SPP excitation.

Main Methods:

  • Fabrication of a silver diffraction grating with sub-wavelength zig-zag grooves.
  • Optical excitation experiments using visible radiation.

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Last Updated: May 16, 2026

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
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Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

Published on: July 21, 2018

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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

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  • Analysis of SPP excitation under different polarization states (TE and TM).

    • Main Results:

    • SPP excitation was successfully achieved on the zig-zag grating.
    • TE-polarized light efficiently excited SPPs propagating in the diffraction plane.
    • TM-polarized light, despite inducing surface charge, did not excite SPPs due to broken-mirror symmetry.

    Conclusions:

    • The zig-zag diffraction grating enables selective excitation of SPPs.
    • Polarization of incident light is a critical factor for SPP excitation on gratings with broken symmetry.
    • This study highlights the potential of engineered nanostructures for controlling plasmonic phenomena.