title: Blackbody spectrum revisited in the near field.
abstract: We report local spectra of the near-field thermal emission recorded by a Fourier transform infrared spectrometer, using a tungsten tip as a local scatterer coupling the near-field thermal emission to the far field. Spectra recorded on silicon carbide and silicon dioxide exhibit temporal coherence due to thermally excited surface waves. Finally, we evaluate the ability of this spectroscopy to probe the frequency dependence of the electromagnetic local density of states.
authors.affiliation: Institut Langevin, ESPCI ParisTech, CNRS, 75238 Paris Cedex 05, France.
authors.forename: Arthur
authors.initials: A
authors.lastname: Babuty
authors.affiliation: Institut P', CNRS, Université de Poitiers, 86022 Poitiers, France.
authors.forename: Karl
authors.initials: K
authors.lastname: Joulain
authors.affiliation: Catalan Institute of Nanotechnology (ICN), Campus UAB, 08193 Bellaterra, Spain and Centre de Thermique de Lyon (CETHIL), CNRS, INSA Lyon, UCBL, 69621 Villeurbanne, France.
authors.forename: Pierre-Olivier
authors.initials: PO
authors.lastname: Chapuis
authors.affiliation: Laboratoire Charles Fabry, Institut d'Optique, CNRS, Université Paris-Sud, 91127 Palaiseau, France.
authors.forename: Jean-Jacques
authors.initials: JJ
authors.lastname: Greffet
authors.affiliation: Institut Langevin, ESPCI ParisTech, CNRS, 75238 Paris Cedex 05, France.
authors.forename: Yannick
authors.initials: Y
authors.lastname: De Wilde