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International Journal of Optics
Volume 2012, Article ID 452047, 8 pages
http://dx.doi.org/10.1155/2012/452047
Research Article

Absorption by an Optical Dipole Antenna in a Structured Environment

Institut Langevin, ESPCI ParisTech, CNRS, 10 Rue Vauquelin, 75231 Paris Cedex 05, France

Received 31 October 2011; Accepted 13 December 2011

Academic Editor: Nicolas Bonod

Copyright © 2012 E. Castanié et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We compute generalized absorption and extinction cross-sections of an optical dipole nanoantenna in a structured environment. The expressions explicitly show the influence of radiation reaction and the local density of states on the intrinsic absorption properties of the antenna. Engineering the environment could allow to modify the overall absorption as well as the frequency and the linewidth of a resonant antenna. Conversely, a dipole antenna can be used to probe the photonic environment, in a similar way as a quantum emitter.