Title

Coupling Enhancement and Giant Rabi-Splitting in Large Arrays of Tunable Plexcitonic Substrates

Authors

Authors

P. Chantharasupawong; L. Tetard;J. Thomas

Comments

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Abbreviated Journal Title

J. Phys. Chem. C

Keywords

LOCALIZED SURFACE-PLASMON; RAMAN-SCATTERING; EXTINCTION SPECTROSCOPY; NANOSPHERE LITHOGRAPHY; METAL NANOPARTICLES; GOLD NANOPARTICLES; FANO; RESONANCE; RHODAMINE 6G; QUANTUM-DOT; FABRICATION; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, ; Multidisciplinary

Abstract

Advances in active manipulation of light at the nanoscale are rapidly emerging with the concept of plexcitonic coupling at the interface between plasmonics nanostructures and excitonic molecules. In this work, we devise a simple fabrication scheme to produce and optimize large area tunable plasmonic substrates for strong plasmon-exciton interactions. By tuning the diameter of the nanoholes using a simple plasma etching process, we demonstrate the potential of our approach to deliver tunable plasmonic substrates. Thus, large enhancements of fluorescence and Raman scattering could be measured. Moreover, hybridized states appearing in the presence of excitonic molecules (RG6) give rise to anticrossing behaviors in extinction spectroscopy, a phenomenon also known as Rabi-splitting. The results demonstrate the great potential of our large nanofabricated arrays as plexcitonic substrates for numerous applications, including sensors, light harvesters, and all-optical switches.

Journal Title

Journal of Physical Chemistry C

Volume

118

Issue/Number

41

Publication Date

1-1-2014

Document Type

Article

Language

English

First Page

23954

Last Page

23962

WOS Identifier

WOS:000343333600057

ISSN

1932-7447

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