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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Glenn D. Boreman
  • Vol. 44, Iss. 36 — Dec. 20, 2005
  • pp: 7845–7852

Measuring the optical parameters of weakly absorbing, highly turbid suspensions by a new technique: photoacoustic detection of scattered light

Zuomin Zhao and Risto Myllylä  »View Author Affiliations


Applied Optics, Vol. 44, Issue 36, pp. 7845-7852 (2005)
http://dx.doi.org/10.1364/AO.44.007845


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Abstract

We present and apply a novel method, the scattering photoacoustic (SPA) technique, for measuring optical parameters in weakly absorbing, highly scattering suspensions. In this method, a solid absorber is in contact with a suspension sample to permit the photoacoustic detection of the sample's light-scattering properties. We conducted measurements conducted to determine the reduced scattering coefficients of Intralipid suspensions with a concentration range of 0.1-5%, and the results are in good agreement with those achieved by other researchers. Moreover, we also illustrate the relationship between the amplitude of the SPA signal and absorption, scattering, and detection distance. Through a study of Intralipid-ink mixes, we demonstrate that the SPA technique has the ability to determine simultaneously the absorption and reduced scattering coefficients of turbid media. This new technique has low cost and is noninvasive, and it enables on-line measurements to be made.

© 2005 Optical Society of America

OCIS Codes
(160.4760) Materials : Optical properties
(170.6510) Medical optics and biotechnology : Spectroscopy, tissue diagnostics
(290.5820) Scattering : Scattering measurements
(290.7050) Scattering : Turbid media
(300.6430) Spectroscopy : Spectroscopy, photothermal

ToC Category:
Scattering

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

Citation
Zuomin Zhao and Risto Myllylä, "Measuring the optical parameters of weakly absorbing, highly turbid suspensions by a new technique: photoacoustic detection of scattered light," Appl. Opt. 44, 7845-7852 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-36-7845


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References

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