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

    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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