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APS » Journals » Phys. Rev. Lett. » Volume 95 » Issue 20
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Phys. Rev. Lett. 95, 200801 (2005) [4 pages]

Optical Microscopy via Spectral Modifications of a Nanoantenna

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T. Kalkbrenner1,*, U. Håkanson1, A. Schädle2, S. Burger2, C. Henkel3, and V. Sandoghdar1,†
1Laboratory of Physical Chemistry, Swiss Federal Institute of Technology (ETH), 8093 Zurich, Switzerland
2Zuse Institute Berlin, Takustrasse 7, 14195 Berlin, Germany
3Institute of Physics, University of Potsdam, 14469 Potsdam, Germany

Received 6 April 2005; published 7 November 2005

The existing optical microscopes form an image by collecting photons emitted from an object. Here we report on the experimental realization of microscopy without the need for direct optical communication with the sample. To achieve this, we have scanned a single gold nanoparticle acting as a nanoantenna in the near field of a sample and have studied the modification of its intrinsic radiative properties by monitoring its plasmon spectrum.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.95.200801
DOI:
10.1103/PhysRevLett.95.200801
PACS:
07.79.Fc, 42.50.Lc, 42.30.−d, 78.67.Bf

*Present address: FOM-Institute for Atomic and Molecular Physics, 1098 SJ Amsterdam, The Netherlands.

†Electronic address: vahid.sandoghdar@ethz.ch

 
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