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Related Experiment Video

Updated: Jun 22, 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

A virtual optical probe based on localized Surface Plasmon Polaritons.

Emiliano Descrovi, Vincent Paeder, Luciana Vaccaro

    Optics Express
    |June 6, 2009
    PubMed
    Summary
    This summary is machine-generated.

    We developed a new nano-source using Surface Plasmon Polaritons (SPP) trapped in a cavity. This localized source enables sub-diffraction limit imaging, detecting details as small as 50 nm.

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    Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
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    Published on: July 21, 2018

    Optical Trapping of Plasmonic Nanoparticles for In Situ Surface-Enhanced Raman Spectroscopy Characterizations
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    Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

    Published on: November 21, 2019

    Area of Science:

    • Plasmonics
    • Nanophotonics
    • Scanning Near-field Microscopy

    Background:

    • Surface Plasmon Polaritons (SPP) are light-driven electron oscillations on metal surfaces.
    • Confining SPPs below the diffraction limit is challenging for high-resolution imaging.

    Purpose of the Study:

    • To propose and numerically demonstrate a confined nano-source for enhanced near-field microscopy.
    • To utilize trapped SPPs as a virtual probe for sub-diffraction imaging.

    Main Methods:

    • Numerical simulation of Surface Plasmon Polaritons (SPP) excitation on structured thin metal films.
    • Design of a plasmonic cavity to confine SPPs.
    • Simulated scanning of small objects to assess resolution.

    Main Results:

    • Demonstrated trapping of SPPs in a spatial region smaller than the diffraction limit.
    • Utilized the enhanced plasmonic field as a virtual probe.
    • Achieved detection of feature sizes down to 50 nm.

    Conclusions:

    • The proposed device acts as a localized, non-radiating nano-source.
    • The system offers high sensitivity characteristic of SPP-based sensors.
    • The lateral resolution is determined by the virtual probe's size, enabling nanoscale imaging.