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Related Experiment Video

Updated: May 21, 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

Sub-wavelength energy concentration with electrically generated mid-infrared surface plasmons.

A Bousseksou1, A Babuty, J-P Tetienne

  • 1Institut d’Electronique Fondamentale, Univ. Paris Sud, UMR8622 CNRS, 91405 Orsay, France. adel.bousseksou@u-psud.fr

Optics Express
|June 21, 2012
PubMed
Summary

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Researchers demonstrate sub-wavelength focusing of light using tailored surface-plasmon polaritons on a semiconductor chip in the mid-infrared range. This overcomes diffraction limits for advanced plasmonic devices.

Area of Science:

  • Optics and Photonics
  • Materials Science
  • Nanotechnology

Background:

  • Freely propagating photons are limited by the diffraction limit for focusing.
  • Surface-plasmon polaritons (SPPs) can confine light to sub-wavelength volumes.
  • SPP properties are diminished at mid-infrared and THz wavelengths due to metal behavior.

Purpose of the Study:

  • To demonstrate the generation and manipulation of SPPs in the mid-infrared range.
  • To overcome the limitations of SPPs at longer wavelengths by tailoring dispersion.
  • To achieve sub-wavelength focusing of plasmonic excitations on a semiconductor chip.

Main Methods:

  • Artificial tailoring of surface-plasmon dispersion.
  • Generation of plasmonic excitations on a semiconductor chip.

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Evaluating Plasmonic Transport in Current-carrying Silver Nanowires
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Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

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Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters
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Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters

Published on: July 8, 2013

Related Experiment Videos

Last Updated: May 21, 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

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires
09:00

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Published on: December 11, 2013

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters
10:54

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters

Published on: July 8, 2013

  • Full near-field characterization of electromagnetic field distribution.

    • Main Results:

    • SPPs were generated and propagated over long, bent paths on a semiconductor chip.
    • Focusing of plasmonic excitations into a sub-wavelength volume was achieved.
    • Near-field characterizations confirmed the electromagnetic field distribution and functionalities.

    Conclusions:

    • Tailored SPPs can overcome diffraction limits in the mid-infrared spectrum.
    • This work enables advanced plasmonic devices with sub-wavelength focusing capabilities.
    • Demonstrated functionalities pave the way for novel optical applications.