Polarization-dependant strong coupling in silver nanorod arrays using photochromic molecules
Abstract
Surface plasmon resonances can couple with molecular resonances (excitons) leading to weak or strong coupling regimes. The latter is always observed when the plasmon or the molecular exciton presents a large oscillator strength (high-Q plasmonic cavities or J-aggregates). We report here the observation of a strong coupling regime between the surface plasmon resonance of a nanoparticle array and the molecular excited state of photochromic molecules, both of them presenting weak oscillator strength.