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RESEARCH PRODUCT
Single-molecule controlled emission in planar plasmonic cavities
Alexandre BouhelierJ.-c. WeeberAymeric LerayJean-pierre HermierJean-pierre HermierStéphanie BuilAshish KumarXavier QuélinG. Colas Des FrancsS. Deromsubject
CouplingMaterials sciencebusiness.industrySurface plasmonCavity quantum electrodynamicstechnology industry and agriculturePhysics::Optics02 engineering and technology[ PHYS.COND.CM-GEN ] Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other]Radiation021001 nanoscience & nanotechnologyCondensed Matter Physics01 natural sciencesFluorescenceElectronic Optical and Magnetic MaterialsPlanar[PHYS.COND.CM-GEN]Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other]0103 physical sciencesRadiative transferOptoelectronics010306 general physics0210 nano-technologybusinessPlasmondescription
International audience; We study the fluorescence emission from single dye molecules in coplanar plasmonic cavities composed of a thin gold film surrounded by two in-plane surface plasmon Bragg mirrors. We first discuss the effect of the presence of Bragg mirrors on the radiation diagram of surface plasmon coupled emission. Then, we investigate the role of the planar cavity size by single-molecule fluorescence lifetime imaging. Experimental data are compared to numerical simulations of the decay rates calculated as a function of the molecule orientation and position within the cavity. The creation of new decay channels by coupling to the cavity modes is also discussed. We measure a plasmonic Purcell factor up to five, attributed to the enhancement of the radiative rate.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-01-02 |