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Optics Letters

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  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 2 — Jan. 15, 2006
  • pp: 190–192

Correlation of static speckle with sample properties in optical coherence tomography

Timothy R. Hillman, Steven G. Adie, Volker Seemann, Julian J. Armstrong, Steven L. Jacques, and David D. Sampson  »View Author Affiliations


Optics Letters, Vol. 31, Issue 2, pp. 190-192 (2006)
http://dx.doi.org/10.1364/OL.31.000190


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Abstract

We present theoretical calculations, based on a random phasor sum model, which show that the optical coherence tomography speckle contrast ratio is dependent on the local density of scattering particles in a sample, provided that the effective number of scatterers in the probed volume is less than about five. We confirm these theoretical predictions experimentally, using suspensions of microspheres in water. The observed contrast ratios vary in value from the Rayleigh limit of 0.52 to in excess of 2, suggesting that the contrast ratio could be useful in optical coherence tomography, particularly when imaging in ultrahigh-resolution regimes.

© 2006 Optical Society of America

OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(170.4500) Medical optics and biotechnology : Optical coherence tomography
(290.5850) Scattering : Scattering, particles

ToC Category:
Medical Optics and Biotechnology

Virtual Issues
Vol. 1, Iss. 2 Virtual Journal for Biomedical Optics

Citation
Timothy R. Hillman, Steven G. Adie, Volker Seemann, Julian J. Armstrong, Steven L. Jacques, and David D. Sampson, "Correlation of static speckle with sample properties in optical coherence tomography," Opt. Lett. 31, 190-192 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-2-190


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