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Optics Letters

Optics Letters

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  • Vol. 32, Iss. 5 — Mar. 1, 2007
  • pp: 506–508

Measurement of absolute flow velocity vector using dual-angle, delay-encoded Doppler optical coherence tomography

Cameron J. Pedersen, David Huang, Mark A. Shure, and Andrew M. Rollins  »View Author Affiliations


Optics Letters, Vol. 32, Issue 5, pp. 506-508 (2007)
http://dx.doi.org/10.1364/OL.32.000506


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Abstract

Single-beam laser Doppler measurements of flow velocity are only sensitive to the velocity component parallel to the optical axis. We describe a simple modification to a standard Doppler optical coherence tomography (OCT) system using a single sample beam that provides velocity information from multiple angles within the beam. By introducing a glass plate midway into the OCT beam path, the sample beam is divided into several components, each with a different group delay and each providing a separate interferogram with its own effective Doppler angle. By combining the Doppler shift measured in each of these component interferograms, the flow velocity vector is fully determined.

© 2007 Optical Society of America

OCIS Codes
(170.3340) Medical optics and biotechnology : Laser Doppler velocimetry
(170.3890) Medical optics and biotechnology : Medical optics instrumentation
(170.4500) Medical optics and biotechnology : Optical coherence tomography

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: August 2, 2006
Revised Manuscript: October 27, 2006
Manuscript Accepted: November 3, 2006
Published: February 2, 2007

Virtual Issues
Vol. 2, Iss. 4 Virtual Journal for Biomedical Optics

Citation
Cameron J. Pedersen, David Huang, Mark A. Shure, and Andrew M. Rollins, "Measurement of absolute flow velocity vector using dual-angle, delay-encoded Doppler optical coherence tomography," Opt. Lett. 32, 506-508 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-5-506

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