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Proceedings Paper

Localized plasmon enhanced optical response: harmonic generation and polarization effects
Author(s): Patrice Gadenne; Bruno Berini; Stephanie Buil; Xavier Quelin; C. Anceau; S. Gresillon; S. Ducourtieux; Jean-Claude Rivoal; M. Breit; Alain Bourdon; Andrey K. Sarychev; Vladimir M. Shalaev
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Paper Abstract

It is now known that plasmon oscillations supported by nanostructured metal thin films of fractal morphology, can result in large local fields and strong enhancement of optical phenomena, for example Raman scattering. The localized plasmons, acting like nano-antennas, can concentrate very large electromagnetic energy in nanometer- sized areas, hot spots, and provide particularly strong enhancement of optical responses, in a very broad spectral range. Our new experimental results show up position dependence of the hot spots on the polarization state of the light. Moreover as expected from recent theoretical predictions, on this kind of thin percolating films, there is a dramatic enhancement of the second harmonic generation (2(omega) ) out of the specular directions. This unusual diffuse SHG could be connected to possible chirality of the percolating metallic films, which is expected to manifest itself as change in the hot-spot distribution for the left and right circularly polarized incident light.

Paper Details

Date Published: 9 July 2001
PDF: 9 pages
Proc. SPIE 4467, Complex Mediums II: Beyond Linear Isotropic Dielectrics, (9 July 2001); doi: 10.1117/12.432941
Show Author Affiliations
Patrice Gadenne, Univ. de Versailles Saint-Quentin (France)
Bruno Berini, Univ. de Versailles Saint-Quentin (France)
Stephanie Buil, Univ. de Versailles Saint-Quentin (France)
Xavier Quelin, Univ. de Versailles Saint-Quentin (France)
C. Anceau, Univ. de Versailles Saint-Quentin (France)
S. Gresillon, Univ. Pierre et Marie Curie and Ludwig-Maximillians-Univ. Muenchen (France)
S. Ducourtieux, Univ. Pierre et Marie Curie (France)
Jean-Claude Rivoal, Univ. Pierre et Marie Curie (France)
M. Breit, Ludwig-Maximilians-Univ Muenchen (Germany)
Alain Bourdon, Univ. Pierre et Marie Curie (France)
Andrey K. Sarychev, New Mexico State Univ. (United States)
Vladimir M. Shalaev, New Mexico State Univ. (United States)

Published in SPIE Proceedings Vol. 4467:
Complex Mediums II: Beyond Linear Isotropic Dielectrics
Akhlesh Lakhtakia; Werner S. Weiglhofer; Ian J. Hodgkinson, Editor(s)

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