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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 7 — Mar. 1, 2001
  • pp: 1029–1036

Three-Dimensional Acousto-Optic Imaging in Biological Tissues with Parallel Signal Processing

Sandrine Lévêque-Fort  »View Author Affiliations


Applied Optics, Vol. 40, Issue 7, pp. 1029-1036 (2001)
http://dx.doi.org/10.1364/AO.40.001029


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Abstract

An original acousto-optic method is described that allows one to reveal optical contrasts through biological tissues that are several centimeters thick with a millimeter-sized resolution. This technique is based on the interaction of scattered laser light with a focused ultrasonic field. The modulation depth of the optical speckle is related to local optical properties of the sample. Our parallel-processing approach to the demodulation of the speckle improves the observed degree of modulation by 2 orders of magnitude and quickly yields a good statistical value. Optically absorbing objects were imaged inside 35-mm-thick biological tissues.

© 2000 Optical Society of America

OCIS Codes
(100.6890) Image processing : Three-dimensional image processing
(110.6150) Imaging systems : Speckle imaging
(170.7050) Medical optics and biotechnology : Turbid media

Citation
Sandrine Lévêque-Fort, "Three-Dimensional Acousto-Optic Imaging in Biological Tissues with Parallel Signal Processing," Appl. Opt. 40, 1029-1036 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-7-1029

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