Controlling light emission with hybrid metasurfaces

Hybrid metasurfaces that combine plasmonic metals with dielectrics provide access to both electric and magnetic effects, as well as their combination. This is especially useful when quantum emitters, such as fluorescent molecules, are combined with the metasurface. On the one side, the strong field enhancement provided by the plasmonic metal can be used to excite the molecule, while the dielectric resonator can prevent fluorescence quenching, limit absorption and enhance radiation. In this presentation, we review the design and fabrication of such metasurfaces and characterize experimentally their interaction with fluorescent molecules. We also show how a location-specific position of the emitters can control the overall optical response.