Sommaire:

The group "Nanophotonics and quantum optics" at INSP studies the coupling between a fluorescent emitter (generally a colloidal CdSe/CdS nanocrystal) and its optical environment : metallic surface, photonic crystal, optical nano-antenna, nanocavity... I will first briefly present the group's activities and a few recent results on the coupling of nanocrystals to a "patch" nano-antenna and to optical Tamm-modes cavities. I will then detail how, by taking into account its optical environment (nature of the substrate etc), the polarization analysis of a nano-emitter can give access to its orientation or to its emission fine structure (a single linear dipole or two degenerate dipoles). We applied this method to spherical nanocrystals and to CdSe/CdS nanorods, as well as to nanoplatelets (colloidal 20x20 nm quantum wells of a few monolayers thickness). For the latter type of nanostructure, a combined measure of the radiation pattern (Fourier plane) and polarization provides especially precise information about a single emitter.

Pour plus d'informations, merci de contacter Jacques V.