New features in the theoretical description of the optical properties of plasmon-exciton nanostructures
Alexey D. Kondorskiy; P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia
Abstract
Hybrid nanostructures combining metallic components with excitonic materials have garnered significant attention due to their promising applications in nanophotonics. The optical behavior of these systems arises from electromagnetic interactions between excitons and localized surface plasmon polaritons supported by the metal. As the strength of plasmon-exciton coupling increases, the plasmonic and excitonic bands hybridize to form polariton states with qualitatively different properties compared to the individual components. These effects are particularly pronounced in core-shell metal-organic nanostructures consisting of a metallic core surrounded by an organic shell of ordered molecular J-aggregates, whose narrow, intense absorption resonances enhance the coupling strength. This report examines current theoretical models and physical approaches used to describe the optical properties of plasmon-exciton nanostructures, with particular emphasis on systems exhibiting strong and ultrastrong coupling regimes in metal-organic architectures. We highlight new features in theoretical descriptions and discuss emergent optical phenomena and design principles revealed by these theoretical frameworks.
Speaker
Alexey D. Kondorskiy
P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia
Russia
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