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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

Photoacoustic Doppler measurement of flow using tone burst excitation

Adi Sheinfeld, Sharon Gilead, and Avishay Eyal  »View Author Affiliations


Optics Express, Vol. 18, Issue 5, pp. 4212-4221 (2010)
http://dx.doi.org/10.1364/OE.18.004212


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Abstract

In this paper a novel technique for flow measurement which is based on the photoacoustic (PA) Doppler effect is described. A significant feature of the proposed approach is that it can be implemented using tone burst optical excitation thus enabling simultaneous measurement of both velocity and position. The technique, which is based on external modulation and heterodyne detection, was experimentally demonstrated by measurement of the flow of a suspension of carbon particles in a silicon tube and successfully determined the particles mean velocity up to values of 130 mm/sec, which is about 10 times higher than previously reported PA Doppler setups. In the theoretical part a rigorous derivation of the PA response of a flowing medium is described and some important simplifying approximations are highlighted.

© 2010 OSA

OCIS Codes
(170.5120) Medical optics and biotechnology : Photoacoustic imaging
(280.2490) Remote sensing and sensors : Flow diagnostics
(110.4153) Imaging systems : Motion estimation and optical flow
(110.5125) Imaging systems : Photoacoustics

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: November 16, 2009
Revised Manuscript: January 17, 2010
Manuscript Accepted: January 19, 2010
Published: February 17, 2010

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

Citation
Adi Sheinfeld, Sharon Gilead, and Avishay Eyal, "Photoacoustic Doppler measurement of flow using tone burst excitation," Opt. Express 18, 4212-4221 (2010)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-18-5-4212


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References

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