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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 3 — Jan. 30, 2012
  • pp: 3200–3208

Local refractive index probed via the fluorescence decay of semiconductor quantum dots

Anne Pillonnet, Pierre Fleury, Alexey I. Chizhik, Anna M. Chizhik, David Amans, Gilles Ledoux, Florian Kulzer, Alfred J. Meixner, and Christophe Dujardin  »View Author Affiliations

Optics Express, Vol. 20, Issue 3, pp. 3200-3208 (2012)

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We present a novel approach for convenient tuning of the local refractive index around nanostructures. We apply this technique to study the influence of the local refractive index on the radiative decay time of CdSe/ZnS quantum dots with three distinct emission wavelengths. The dependence of the luminescence decay time on the environment is well described by an effective medium approach. A critical distance of about 80 nm is found for the determination of the effective local index of refraction. An estimation for the emitting-state quantum efficiency can be extracted.

© 2012 OSA

OCIS Codes
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence
(260.2065) Physical optics : Effective medium theory

ToC Category:

Original Manuscript: November 28, 2011
Revised Manuscript: January 11, 2012
Manuscript Accepted: January 19, 2012
Published: January 26, 2012

Virtual Issues
Vol. 7, Iss. 3 Virtual Journal for Biomedical Optics

Anne Pillonnet, Pierre Fleury, Alexey I. Chizhik, Anna M. Chizhik, David Amans, Gilles Ledoux, Florian Kulzer, Alfred J. Meixner, and Christophe Dujardin, "Local refractive index probed via the fluorescence decay of semiconductor quantum dots," Opt. Express 20, 3200-3208 (2012)

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