Excitonic surface lattice resonances (dataset)

University of Exeter Physics and AstronomyThrough the use of analytic models and numerical simulation we show how molecular materials may be used to produce nanoparticles that exhibit localized surface exciton polariton modes when the molecules have a strong excitonic transition. Such particles display electric field enhancement and field confinement similar to those associated with the localized surface plasmon polariton modes of metallic nanoparticles. We further show that periodic arrays of suitable molecular nanoparticles may support surface lattice resonances that arise as a result of coherent interactions between the particles. These results demonstrate that excitonic molecular materials are an interesting alternative to metals for nanophotonics; they offer the prospect of both fabrication based on supramolecular chemistry and optical functionality arising from the way the properties of such materials may be controlled with ligh