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Nano-com (I): Nano-optics
International context

The prospect and future applications opened by the photonic local probe based methods overpass the simple concept of near--field optical microscopy. An impressive demonstration of this statement was provided about nine years ago with the first experiments by Betzig and Chichester (ATT) involving the detection of local signals emitted by individuals molecules.
Since these pionneering works an increasing interest has been devoted to this new single molecular detection (SMD) technique and very recently, NFO is entering a new era in which the concept of imaging a sample with a single molecule is become a reality (Mlynek and Sandoghdar (Constance)).
In this context, the recent knowledges acquired by the near-field optics instrumentation have stimulated a new class of nanooptics experiments in which it is intended to use the optical tunnel effect to control the optical energy transfer between several delocalized detection or injection. Nowadays, these two emerging topic areas can be combined to perform new original experiments related to the optical addressing of individual molecules. Recently, on the basis of numerical simulations, Subwavelength Optical Waveguides (SOW) made of dielectric particles aligned to build heterowires were found to be efficient for transfering light through an operational, albeit incomplete, photonic band.

Theory, numerical simulations and design of nano-optical devices

In our group, we develop these different topic areas from a formalism based on the numerical implementation of the Dyadic Green's Function for Electrodynamics. This research is made in strong collaboration with several experimental groups in France and in Europe:

  • LCAR Toulouse (J. Weiner)

  • LPUB Dijon (A. Dereux and J.C. Weeber)

  • ISIS Strasbourg ( T. Ebessen)

  • ETH Zurich (O.J.F. Martin)

  • Munster University, Germany (U. Fischer)

  • University of Leiden (M. Orrit)

  • University of Graz (J. Krenn)

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    In this context, we investigate the three following topic areas:

    (A) Theory of optics in confined geometry

    (B) Near-field Optical imaging

    (C) Experimental Photon Scanning Tunnelling Microscopy (PSTM)

    (D) Subwavelength optical devices

    		 

     

     

     
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