Karl Joulain
Institut Pprime, CNRS-Université de Poitiers-ENSMA, Département Fluides, Thermique, Combustion, ESIP-Batiment de mécanique, France
Jean-Philippe Mulet
Laboratoire d'Énergétique Moléculaire et Macroscopique, Combustion École Centrale Paris, 92295 Châtenay-Malabry Cedex, France
Remi Carminati
Laboratoire d'Énergétique Moléculaire et Macroscopique, Combustion École Centrale Paris, 92295 Châtenay-Malabry Cedex, France
Jean-Jacques Greffet
Laboratoire d'Energétique Moléculaire et Macroscopique, Combustion, CNRS UPR 288, Ecole Centrale Paris, Grande Voie des Vignes, F-92295 Châtenay-Malabry cedex, France
A.V. Shchegrov
Rochester Theory Center for Optical Science and Engineering Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627-0171
We study in this article the emission spectrum of a plane semi-infinite medium. We show that this spectrum displays remarkable differences depending on whether it is calculated in the near or in the far zones. These differences are particularly striking when the material support surface waves. We propose a novel application of near-field spectroscopy to retrieve the dielectric constant at a submicronic scale.
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