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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 9 — Aug. 28, 2012

Propagating surface plasmons on nanoporous gold

Neha Sardana, Frank Heyroth, and Jörg Schilling  »View Author Affiliations


JOSA B, Vol. 29, Issue 7, pp. 1778-1783 (2012)
http://dx.doi.org/10.1364/JOSAB.29.001778


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Abstract

Nanoporous gold films are prepared using a dealloying method and form a sponge type bicontinuous network. As the structure sizes are below 50 nm, the material forms an effective medium with a negative dielectric constant for near infrared light. The dispersion relation of the propagating surface plasmons on the air/nanoporous gold interface is determined from reflection measurements in the Kretschmann configuration. A characteristic red-shift by ca. 0.85 eV compared to surface plasmons on solid gold layers is observed. The results are compared with calculated dispersion relations applying the Bruggeman effective medium theory for the nanoporous gold films.

© 2012 Optical Society of America

OCIS Codes
(240.0240) Optics at surfaces : Optics at surfaces
(240.6680) Optics at surfaces : Surface plasmons
(240.2130) Optics at surfaces : Ellipsometry and polarimetry

ToC Category:
Optics at Surfaces

History
Original Manuscript: April 27, 2012
Revised Manuscript: May 25, 2012
Manuscript Accepted: May 29, 2012
Published: June 26, 2012

Virtual Issues
Vol. 7, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Neha Sardana, Frank Heyroth, and Jörg Schilling, "Propagating surface plasmons on nanoporous gold," J. Opt. Soc. Am. B 29, 1778-1783 (2012)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=josab-29-7-1778

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