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
CountryUnited States
CitySan Francisco, California
Period21/01/201226/01/2012

Keywords

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

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