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Updated: May 23, 2026

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires
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Published on: December 11, 2013

Electrically generated unidirectional surface plasmon source.

L Wang1, T Li, L Li

  • 1National Laboratory of Solid State Microstructures, School of Physics, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China.

Optics Express
|April 20, 2012
PubMed
Summary
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We developed an electrically driven surface plasmon source using a silver-coated light-emitting diode (LED) and gratings. This device generates a unidirectional surface plasmon polariton (SPP) beam with efficient launching and long propagation, enabling plasmonic device integration.

Area of Science:

  • Photonics
  • Plasmonics
  • Optoelectronics

Background:

  • Surface plasmon polaritons (SPPs) are crucial for nanoscale light manipulation.
  • Existing methods for generating SPPs often require complex setups or external light sources.

Purpose of the Study:

  • To demonstrate an electrically excited surface plasmon source.
  • To achieve a unidirectional SPP beam with high efficiency and long propagation distance.

Main Methods:

  • Fabrication of a silver-coated light-emitting diode (LED) integrated with precisely designed gratings.
  • Utilizing a direct current (DC) supply to excite SPPs from the LED illumination via a grating coupler.
  • Employing a tilted grating design to achieve a unidirectional SPP beam.

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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

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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

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Last Updated: May 23, 2026

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

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Published on: December 11, 2013

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

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

Main Results:

  • Successful generation of surface plasmon polariton (SPP) waves directly from an LED.
  • Attainment of a unidirectional SPP beam with a high extinction ratio (ER~10).
  • Demonstration of improved launching efficiency and a long SPP propagation distance of approximately 14 μm.

Conclusions:

  • The developed electrically excited surface plasmon source offers a compact and efficient method for generating unidirectional SPP beams.
  • The long propagation distance of the generated SPPs is promising for applications in plasmonic integrated circuits and sensors.