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Updated: Jun 20, 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

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Binary plasmonics: launching surface plasmon polaritons to a desired pattern.

Chenglong Zhao1, Jiasen Zhang

  • 1Department of Physics and State Key Laboratory for Mesoscopic Physics, Peking University, Beijing 100871, China.

Optics Letters
|August 18, 2009
PubMed
Summary
This summary is machine-generated.

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This study introduces a binary plasmonic structure (BPS) for precisely controlling surface plasmon polaritons (SPPs). The method successfully generates multiple SPP focal spots in various configurations, validated by experiments.

Area of Science:

  • Plasmonics
  • Nanophotonics
  • Optical Engineering

Background:

  • Surface plasmon polaritons (SPPs) enable sub-wavelength light manipulation.
  • Controlling SPP propagation and focusing is crucial for nanophotonic devices.
  • Existing methods for SPP pattern generation can be complex.

Purpose of the Study:

  • To propose a novel binary plasmonic structure (BPS) for designing SPP launching.
  • To demonstrate the ability of BPS to generate specific SPP patterns, including multiple focal spots.
  • To validate the design method through numerical simulations and experimental verification.

Main Methods:

  • Design of a binary plasmonic structure (BPS) composed of pixelated grooves.
  • Utilizing a simulated annealing algorithm to optimize groove positions for phase control.

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Published on: July 21, 2018

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  • Illuminating the BPS with a perpendicularly incident plane wave to launch SPPs.
  • Numerical simulations and experimental measurements to verify SPP focusing patterns.

    • Main Results:

    • Successfully designed BPS to launch SPPs into desired patterns.
    • Achieved single, three, and five SPP focal spots along a line.
    • Demonstrated the generation of three SPP focal spots arranged in a triangle.
    • Experimental results showed excellent agreement with numerical simulations.

    Conclusions:

    • The proposed binary plasmonic method is effective for designing BPS to control SPP launching.
    • The simulated annealing algorithm provides a robust approach for optimizing SPP focusing.
    • The demonstrated ability to create multiple SPP focal spots opens possibilities for advanced nanophotonic applications.