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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

Nondiffracting Bessel plasmons.

Carlos J Zapata-Rodríguez1, Slobodan Vuković, Milivoj R Belić

  • 1Department of Optics, University of Valencia, Dr. Moliner 50, 46100 Burjassot, Spain. carlos.zapata@uv.es

Optics Express
|October 15, 2011
PubMed
Summary
This summary is machine-generated.

Researchers have discovered nondiffracting Bessel surface plasmon polaritons (SPPs) that travel at superluminal or subluminal speeds. These unique wave fields maintain deep subwavelength localization, offering new possibilities for optical technologies.

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Area of Science:

  • Photonics and Plasmonics
  • Condensed Matter Physics

Background:

  • Surface plasmon polaritons (SPPs) are crucial for subwavelength light confinement.
  • Controlling SPP propagation and localization is key for advanced optical devices.

Purpose of the Study:

  • To report the existence of nondiffracting Bessel surface plasmon polaritons (SPPs).
  • To investigate their propagation characteristics and localization properties in metal/dielectric superlattices.

Main Methods:

  • Theoretical analysis and simulation of high-order homogeneous SPPs in metal/dielectric (MD) superlattices.
  • Utilizing interfering multiple converging SPPs with controlled phase matching to control beam axis.

Main Results:

  • Demonstrated nondiffracting Bessel SPPs with superluminal or subluminal phase velocities.
  • Achieved deep subwavelength Full Width at Half Maximum (FWHM) for these wave fields.
  • Showcased relocation of the beam axis to any MD interface.

Conclusions:

  • Nondiffracting Bessel SPPs are supported by high-order homogeneous SPPs in MD superlattices.
  • Dissipative effects limit the diffraction-free regime but ultra-localization can be maintained.
  • This work advances the control and application of SPPs for subwavelength optics.