6533b833fe1ef96bd129c8cb

RESEARCH PRODUCT

Interaction en champ proche entre une sonde nanométrique et le champ de composants à cristal photonique:- interaction faible, microscopie spatialement hautement résolue- interaction forte, contrôle des propriétés du composant.

subject

description

With the improvement of fabrication techniques, the nanophotonics and more especially the photonics crystals which are periodic structure at the Wavelength scale have been recently developed. In this work, by using a scanning near-field optical microscope, we study such components. Firslty, we use the local probe to visualize the light distribution inside photonic crystal microcavities etched into semiconductor III/V. We focus us on the explanation of the near-field maps formation and on the probe influence on these maps. Thus, we have visualize degeneracy splitting of optical cavity modes and clearly observed in near-field cavity modes which were not visible in far-field. Moreover, in the case of Bloch mode cavities, we have also experimentally determined the dispersion curves of the photonic crystal. secondly, we use the local probe to control the nanoresonator properties. The nanoresonators consist in high Q small v photonic crystal cavity. In this case, we study theoretically as well as experimentally the interaction between the local probe and the nanocavity. Thus, we have mapped this interaction in the collection mode as well as in the interaction mode. Moreover, we have proposed some near-field opto-mechanical systems.