Extended hybridization and energy transfer in periodic multimaterial organic structures in strong coupling with surface plasmon
Hybridation étendue et transfert d'énergie dans des structures organiques multimatériaux périodiques en couplage fort avec des plasmons de surface
Résumé
The strong light matter coupling occurring when the light matter interaction prevails on the damping, has found applications beyond the domain of optics, in chemistry or transport. These advances make crucial the development of various structures in strong 2 coupling. In this paper we propose a new way to hybridize two materials and transfer energy through a surface plasmon over micrometric distances. For this purpose, two patterned interlocked dyes arrays, one donor and one acceptor, are deposited on a silver surface by successive micro contact printing, leading to a pattern of 5 microns period. The dispersion relation of the structure is measured with reflectometry experiments and evidence the hybridization with the plasmon, and the formation of states mixing both excitons and the plasmon with similar weights. The mixing in these polaritonic metasurfaces enables an energy transfer mechanism in strong coupling, which is observed with luminescence experiments. As the donor and acceptor are spatially separated by a distance larger than the diffraction limit the excitation transfer is directly measured, and evaluated by comparison with dyes arrays without silver.
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