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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 5, Iss. 6 — Apr. 8, 2010

Modeling whispering gallery modes in quantum dot embedded polystyrene microspheres

Hope T. Beier, Gerard L. Coté, and Kenith E. Meissner  »View Author Affiliations


JOSA B, Vol. 27, Issue 3, pp. 536-543 (2010)
http://dx.doi.org/10.1364/JOSAB.27.000536


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Abstract

Whispering gallery modes (WGMs) have been demonstrated in polystyrene microspheres embedded with quantum dots (QDs) in the periphery to serve as local light sources for the remote excitation of low Q-factor microsphere sensors. These sensors were shown to display varied WGM spectra and refractometric sensitivity exceeding that predicted for a homogeneous microsphere. To explain these differences from the basic Mie scattering theory, the QDs have been modeled as a thin high index outer layer. This model has been shown to provide a good fit of the observed WGM spectra, with calculated values for the QD layer refractive index and penetration depth falling within our observed estimates. The possible enhancement in sensitivity for these microspheres has also been determined.

© 2010 Optical Society of America

OCIS Codes
(170.4520) Medical optics and biotechnology : Optical confinement and manipulation
(260.2110) Physical optics : Electromagnetic optics
(300.6490) Spectroscopy : Spectroscopy, surface
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Spectroscopy

History
Original Manuscript: December 18, 2009
Manuscript Accepted: January 13, 2010
Published: February 24, 2010

Virtual Issues
Vol. 5, Iss. 6 Virtual Journal for Biomedical Optics

Citation
Hope T. Beier, Gerard L. Coté, and Kenith E. Meissner, "Modeling whispering gallery modes in quantum dot embedded polystyrene microspheres," J. Opt. Soc. Am. B 27, 536-543 (2010)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=josab-27-3-536

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