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Optics Letters

Optics Letters


  • Vol. 24, Iss. 3 — Feb. 1, 1999
  • pp: 181–183

Ultrasonic tagging of photon paths in scattering media: parallel speckle modulation processing

S. Lévêque, A. C. Boccara, M. Lebec, and H. Saint-Jalmes  »View Author Affiliations

Optics Letters, Vol. 24, Issue 3, pp. 181-183 (1999)

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Tagging of photon trajectories in scattering media is possible by application of a localized ultrasonic field to the sample and by measurement of the induced speckle modulation. Instead of using a single optical detector, which integrates the signal of many speckle grains, we propose a more efficient detection scheme that uses a CCD camera and parallel lock-in detection to record the full modulation of the speckle. The advantage of this multiplex detection is demonstrated, as well as the imaging capabilities of the process for biological tissues.

© 1999 Optical Society of America

OCIS Codes
(000.1430) General : Biology and medicine
(030.6140) Coherence and statistical optics : Speckle
(040.1520) Detectors : CCD, charge-coupled device
(100.0100) Image processing : Image processing

S. Lévêque, A. C. Boccara, M. Lebec, and H. Saint-Jalmes, "Ultrasonic tagging of photon paths in scattering media: parallel speckle modulation processing," Opt. Lett. 24, 181-183 (1999)

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