Strong coupling between molecular excited states and surface plasmon modes of a slit array in a thin metal film

Adi Salomon, Robert J. Gordon, Yehiam Prior, Tamar Seideman, Maxim Sukharev

Research output: Contribution to journalArticlepeer-review

123 Scopus citations

Abstract

We demonstrate strong coupling between molecular excited states and surface plasmon modes of a slit array in a thin metal film. The coupling manifests itself as an anticrossing behavior of the two newly formed polaritons. As the coupling strength grows, a new mode emerges, which is attributed to long-range molecular interactions mediated by the plasmonic field. The new, molecular-like mode repels the polariton states, and leads to an opening of energy gaps both below and above the asymptotic free molecule energy.

Original languageEnglish
Article number073002
JournalPhysical Review Letters
Volume109
Issue number7
DOIs
StatePublished - 17 Aug 2012
Externally publishedYes

Funding

FundersFunder number
National Science Foundation
Directorate for Mathematical and Physical Sciences1121262

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