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 language | English |
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Journal | Nano Letters |
Volume | 14 |
Issue number | 5 |
Pages (from-to) | 2431-2435 |
Number of pages | 5 |
ISSN | 1530-6984 |
DOIs | |
Publication status | Published - 4. Apr 2014 |
Keywords
- Plasmon coupling
- plasmonic devices
- Femtosecond phenomena
- nanophotonics
- surface photoemission