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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 21 — Jul. 20, 2006
  • pp: 5185–5190

Local-field enhancement in an optical force metallic nanotrap: application to single-molecule spectroscopy

Patrick C. Chaumet, Adel Rahmani, and Manuel Nieto-Vesperinas  »View Author Affiliations


Applied Optics, Vol. 45, Issue 21, pp. 5185-5190 (2006)
http://dx.doi.org/10.1364/AO.45.005185


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Abstract

We study the local-field enhancement in a nanocavity created by optical nanomanipulation. Recently we showed that a metallic probe can modify the optical force experienced by a metallic particle and generate a material selective trapping potential. We show that the same configuration used for optical forces can be used to control both in magnitude and tune the local-field enhancement around the particle at resonance. The spatial resolution and material selectivity of this technique, allied to its capability to manipulate particles at the nanometric level, may offer a new and versatile way to achieve surface-enhanced Raman scattering spectroscopy at the single-molecule level.

© 2006 Optical Society of America

OCIS Codes
(260.2110) Physical optics : Electromagnetic optics
(290.0290) Scattering : Scattering
(300.0300) Spectroscopy : Spectroscopy

ToC Category:
Spectroscopy

History
Original Manuscript: October 7, 2005
Revised Manuscript: January 13, 2006
Manuscript Accepted: January 26, 2006

Virtual Issues
Vol. 1, Iss. 8 Virtual Journal for Biomedical Optics

Citation
Patrick C. Chaumet, Adel Rahmani, and Manuel Nieto-Vesperinas, "Local-field enhancement in an optical force metallic nanotrap: application to single-molecule spectroscopy," Appl. Opt. 45, 5185-5190 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-21-5185


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