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Visible-light Induced Reduction of Graphene Oxide Using Plasmonic Nanoparticle
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Induced reflection in Tamm plasmon systems.

Hua Lu, Yangwu Li, Han Jiao

    Optics Express
    |March 17, 2019
    PubMed
    Summary

    We demonstrate electromagnetically induced transparency (EIT)-like reflection using a novel Tamm plasmon system. This effect, driven by coupled Tamm plasmon and defect modes, offers new possibilities for light field control in photonic devices.

    Area of Science:

    • Photonics
    • Plasmonics
    • Optics

    Background:

    • Electromagnetically induced transparency (EIT) is a quantum interference effect.
    • Tamm plasmons arise at the interface of a metal and a dielectric multilayer.

    Purpose of the Study:

    • To investigate an induced reflection response analogous to EIT in a novel Tamm plasmon system.
    • To explore the coupling between Tamm plasmon and defect modes for optical control.

    Main Methods:

    • Utilizing a system comprising a thin metal film and a Bragg grating with a defect layer.
    • Performing theoretical calculations and numerical simulations.
    • Analyzing the coupling and interference between Tamm plasmon and defect modes.

    Main Results:

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    • An induced narrow reflection peak was generated within a broad reflection dip.
    • The EIT-like phenomenon is sensitive to structural parameters like layer thicknesses and refractive index.
    • Dynamic tuning of the induced reflection was achieved by altering the incident light angle.
    • Coupling strength between Tamm plasmon and defect modes was found to be controllable.

    Conclusions:

    • The study successfully demonstrates an EIT-analogous induced reflection in a Tamm plasmon system.
    • The findings highlight the tunability and parameter dependence of this optical effect.
    • This work opens new avenues for light field manipulation and the development of advanced photonic devices.