The Interplay between Localized and Propagating Plasmonic Excitations Tracked in Space and Time

Christoph Lemke, Till Leißner, Andrey Evlyukhin, Jörn W. Radke, Alwin Klick, Jacek Fiutowski, Jakob Kjelstrup-Hansen, Horst-Günter Rubahn, Boris N. Chichkov, Carsten Reinhardt, Michael Bauer

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

In this work, the mutual coupling and coherent interaction of propagating and localized surface plasmons within a model-type plasmonic assembly is experimentally demonstrated, imaged, and analyzed. Using interferometric time-resolved photoemission electron microscopy the interplay between ultrashort surface plasmon polariton wave packets and plasmonic nanoantennas is monitored on subfemtosecond time scales. The data reveal real-time insights into dispersion and localization of electromagnetic fields as governed by the elementary modes determining the functionality of plasmonic operation units.
Original languageEnglish
JournalNano Letters
Volume14
Issue number5
Pages (from-to)2431-2435
Number of pages5
ISSN1530-6984
DOIs
Publication statusPublished - 4. Apr 2014

Keywords

  • Plasmon coupling
  • plasmonic devices
  • Femtosecond phenomena
  • nanophotonics
  • surface photoemission

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