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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 18 — Sep. 4, 2006
  • pp: 8138–8153

Spectroscopic phase-dispersion optical coherence tomography measurements of scattering phantoms

Shellee D. Dyer, Tasshi Dennis, Lara K. Street, Shelley M. Etzel, Thomas A. Germer, and Andrew Dienstfrey  »View Author Affiliations

Optics Express, Vol. 14, Issue 18, pp. 8138-8153 (2006)

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We demonstrate a novel technique to determine the size of Mie scatterers with high sensitivity. Our technique is based on spectral domain optical coherence tomography measurements of the phase dispersion that is induced by the scattering process. We use both Mie scattering predictions and dispersion measurements of phantoms to show that the scattering dispersion is very sensitive to small changes in the size and/or refractive index of the scatterer. We also show the light scattered from a single sphere is, in some cases, non-minimum phase. Therefore, the phase is independent of the intensity of the scattered light, and both intensity and phase must be measured directly in order to characterize more completely the scattering problem. Phase dispersion measurements may have application to distinguishing the size and refractive index of scattering particles in biological tissue samples.

© 2006 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(170.4500) Medical optics and biotechnology : Optical coherence tomography
(260.2030) Physical optics : Dispersion
(290.4020) Scattering : Mie theory
(290.5820) Scattering : Scattering measurements

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: June 19, 2006
Revised Manuscript: August 15, 2006
Manuscript Accepted: August 21, 2006
Published: September 1, 2006

Virtual Issues
Vol. 1, Iss. 10 Virtual Journal for Biomedical Optics

Shellee D. Dyer, Tasshi Dennis, Lara K. Street, Shelley M. Etzel, Thomas A. Germer, and Andrew Dienstfrey, "Spectroscopic phase-dispersion optical coherence tomography measurements of scattering phantoms," Opt. Express 14, 8138-8153 (2006)

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