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RESEARCH PRODUCT
Detection of the optical magnetic field by circular symmetry plasmons
Alain DereuxJean-pierre GoudonnetEloïse DevauxEric BourillotYvon LacrouteJean-claude WeeberChristian Girardsubject
PhysicsOptical fiberPhotonbusiness.industryPhysics::OpticsGeneral Physics and AstronomyNear and far fieldSurfaces and InterfacesGeneral ChemistryDielectricCondensed Matter PhysicsSurfaces Coatings and Filmslaw.inventionOpticslawCircular symmetryScanning tunneling microscopebusinessPlasmonExcitationdescription
We report on the influence of coating a sharpened optical fiber tip with Au when observing nanofabricated dielectric structures with a Photon Scanning Tunneling Microscope (PSTM) in constant-height mode. For well-defined incident wavelengths and coating thicknesses, we found that such tips detect the distribution of the magnetic field associated with the optical wave in the near-field zone. A simple tip model indicates that this phenomenon is related to the excitation of circular symmetry plasmons in Au coated tips.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-09-01 | Applied Surface Science |