Are there novel resonances in nanoplasmonic structures due to nonlocal response?

Martijn Wubs, Søren Raza, Giuseppe Toscano, Antti-Pekka Jauho, N. Asger Mortensen

    Research output: Contribution to journalConference articleResearchpeer-review

    Abstract

    In tiny metallic nanostructures, quantum confinement and nonlocal response change the collective plasmonic behaviour with resulting important consequences for e.g. field-enhancement and extinction cross sections. Here we report on nonlocal resonances in the hydrodynamical Drude model for plasmonic nanostructures that have no counterpart in the local-response Drude model. Even though there are no additional resonances in the visible due to nonlocal response, plasmonic field enhancements are affected by nonlocal response. We present both analytical results for simple geometries and our numerical implementation for arbitrary geometries, and address computational issues related to the several length scales involved.
    Original languageEnglish
    JournalProceedings of SPIE - The International Society for Optical Engineering
    Volume8260
    Pages (from-to)82601E
    ISSN0277-786X
    DOIs
    Publication statusPublished - 2012
    EventSPIE Photonics West - The Moscone Center, San Francisco, California, United States
    Duration: 21 Jan 201226 Jan 2012

    Conference

    ConferenceSPIE Photonics West
    LocationThe Moscone Center
    Country/TerritoryUnited States
    CitySan Francisco, California
    Period21/01/201226/01/2012

    Keywords

    • Nanoplasmonics
    • Nonlocal response
    • Hydrodynamical Drude model
    • Field enhancement
    • COMSOL

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