Plasmons in strongly coupled nanostructures: hybridization, Fano resonances, and plexcitons

Prof. Peter Nordlander

Laboratory for Nanophotonics, Department of Physics and Astronomy and Electrical and Computer Engineering Rice University, Houston TX 77005, USA

Monday, June 7th, 10am

Chemistry Division Auditorium, TA-46, Bld. 535, Rm. 103


Plasmonic nanostructures such as narrow plasmonic cavities, strongly interacting nanoparticle aggregates, and hybrid plasmonic/excitonic systems offer highly tunable platforms for the study of radiative interference and coherence effects such as subradiance, superradiance, and electromagnetically induced transparency (EIT). In structures with reduced symmetry, narrow Fano resonances can appear in their extinction spectra resulting from the interference between superradiant and subradiant modes. Apart from their fundamental importance, such phenomena are also of practical interest in metamaterial and chemical and sensing applications because of the extraordinarily narrow linewidths and strong sensitivities to the dielectric properties of the environment. In this talk, I will present a general framework for the description of radiative interference effects in plasmonic systems and illustrate the concepts with examples from recent applications to symmetry broken nanoshells, small nanoparticle clusters of D6h symmetry (Heptamers), planar ring-disk systems (Fanocavities), plasmonic heterodimers, and quantum plasmonics and plexcitonics”.