Volume 64, Number 5, December 2003
|Page(s)||634 - 640|
|Published online||01 November 2003|
Remote optical addressing of single nano-objects
Laboratoire de Spectrométrie Physique, CNRS UMR5588, Université Joseph Fourier Grenoble - BP 87, 38402 Saint Martin d'Hères cedex, France
Corresponding author: firstname.lastname@example.org
Accepted: 2 October 2003
We present a scheme for remotely addressing single nano-objects by means of near-field optical microscopy that makes only use of one of the most fundamental properties of electromagnetic radiation: its polarization. A medium containing optically active nano-objects is covered with a thin metallic film presenting sub-wavelength holes. When the optical tip is positioned some distance away from a hole, surface plasmons in the metal coating are generated which, by turning the polarization plane of the excitation light, transfer the excitation towards a chosen hole and induce emission from the underlying nano-objects. The method, easily applicable to other systems, is demonstrated for single quantum dots (QDs) at low temperature. It may become a valuable tool for future optical applications in the nanoworld.
PACS: 07.79.Fc – Near-field scanning optical microscopes / 78.67.-n – Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures / 73.20.Mf – Collective excitations (including excitons, polarons, plasmons and other charge-density excitations)
© EDP Sciences, 2003
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