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Updated: Jun 20, 2026

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
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Nonlinear surface plasmons guided by thin metal films.

G I Stegeman, C T Seaton

    Optics Letters
    |September 2, 2009
    PubMed
    Summary
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    We numerically solved wave dispersion for thin metal films with intensity-dependent materials. New wave modes emerge, and existing ones change behavior at specific power levels.

    Area of Science:

    • Optics and Photonics
    • Materials Science

    Background:

    • Wave propagation in confined structures is crucial for optical devices.
    • Intensity-dependent (nonlinear) optical materials offer unique control over light.
    • Thin metal films act as waveguides for electromagnetic waves.

    Purpose of the Study:

    • To investigate wave dispersion relations in thin metal films.
    • To explore the impact of nonlinear optical media on guided waves.
    • To identify conditions for mode cutoff and the emergence of new modes.

    Main Methods:

    • Numerical derivation and solution of dispersion relations.
    • Modeling wave propagation in a thin metal film.
    • Analysis of systems bounded by intensity-dependent refractive index media.

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    Last Updated: Jun 20, 2026

    Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
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    Published on: January 3, 2016

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

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    Main Results:

    • Dispersion relations were successfully derived and solved numerically.
    • The presence of nonlinear media leads to significant changes in wave modes.
    • Standard wave modes can be cut off, and new modes appear above critical power thresholds.

    Conclusions:

    • Thin metal films bounded by nonlinear media exhibit complex waveguiding phenomena.
    • Light intensity can be used to control and modify wave propagation characteristics.
    • This research opens possibilities for novel optical switching and modulation devices.