Abstract

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

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References

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  1. W. Leutz and G. Maret, Phys. B 204, 14 (1995).
    [CrossRef]
  2. L. Wang, S. L. Jacques, and X. Zhao, Opt. Lett. 20, 629 (1995).
    [CrossRef] [PubMed]
  3. M. Kempe, M. Larionov, D. Zaslavsky, and A. Z. Genack, J. Opt. Soc. Am. A 14, 1151 (1997).
    [CrossRef]
  4. L. Wang and X. Zhao, Appl. Opt. 36, 7277 (1997).
    [CrossRef]
  5. P. Gleyzes, F. Guernet, and A. C. Boccara, J. Opt. 26, 251 (1995).
    [CrossRef]
  6. S. Lévêque, A. C. Boccara, M. Lebec, and H. Saint-Jaimes, in Advances in Optical Imaging and Photon Migration, R. R. Alfano and J. G. Fujimoto, eds., Vol.??2 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 1996), p. 294.
  7. G. Maret and R. Maynard, in New Aspects of Electromagnetic and Acoustic Wave Diffusion, POAN Research Group, eds., Vol. 144 of Springer Tracts in Modern Physics (Springer-Verlag, Berlin, 1998), pp. 11–16.

1997 (2)

1995 (3)

L. Wang, S. L. Jacques, and X. Zhao, Opt. Lett. 20, 629 (1995).
[CrossRef] [PubMed]

W. Leutz and G. Maret, Phys. B 204, 14 (1995).
[CrossRef]

P. Gleyzes, F. Guernet, and A. C. Boccara, J. Opt. 26, 251 (1995).
[CrossRef]

Boccara, A. C.

P. Gleyzes, F. Guernet, and A. C. Boccara, J. Opt. 26, 251 (1995).
[CrossRef]

S. Lévêque, A. C. Boccara, M. Lebec, and H. Saint-Jaimes, in Advances in Optical Imaging and Photon Migration, R. R. Alfano and J. G. Fujimoto, eds., Vol.??2 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 1996), p. 294.

Genack, A. Z.

Gleyzes, P.

P. Gleyzes, F. Guernet, and A. C. Boccara, J. Opt. 26, 251 (1995).
[CrossRef]

Guernet, F.

P. Gleyzes, F. Guernet, and A. C. Boccara, J. Opt. 26, 251 (1995).
[CrossRef]

Jacques, S. L.

Kempe, M.

Larionov, M.

Lebec, M.

S. Lévêque, A. C. Boccara, M. Lebec, and H. Saint-Jaimes, in Advances in Optical Imaging and Photon Migration, R. R. Alfano and J. G. Fujimoto, eds., Vol.??2 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 1996), p. 294.

Leutz, W.

W. Leutz and G. Maret, Phys. B 204, 14 (1995).
[CrossRef]

Lévêque, S.

S. Lévêque, A. C. Boccara, M. Lebec, and H. Saint-Jaimes, in Advances in Optical Imaging and Photon Migration, R. R. Alfano and J. G. Fujimoto, eds., Vol.??2 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 1996), p. 294.

Maret, G.

W. Leutz and G. Maret, Phys. B 204, 14 (1995).
[CrossRef]

G. Maret and R. Maynard, in New Aspects of Electromagnetic and Acoustic Wave Diffusion, POAN Research Group, eds., Vol. 144 of Springer Tracts in Modern Physics (Springer-Verlag, Berlin, 1998), pp. 11–16.

Maynard, R.

G. Maret and R. Maynard, in New Aspects of Electromagnetic and Acoustic Wave Diffusion, POAN Research Group, eds., Vol. 144 of Springer Tracts in Modern Physics (Springer-Verlag, Berlin, 1998), pp. 11–16.

Saint-Jaimes, H.

S. Lévêque, A. C. Boccara, M. Lebec, and H. Saint-Jaimes, in Advances in Optical Imaging and Photon Migration, R. R. Alfano and J. G. Fujimoto, eds., Vol.??2 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 1996), p. 294.

Wang, L.

Zaslavsky, D.

Zhao, X.

Appl. Opt. (1)

J. Opt. (1)

P. Gleyzes, F. Guernet, and A. C. Boccara, J. Opt. 26, 251 (1995).
[CrossRef]

J. Opt. Soc. Am. A (1)

Opt. Lett. (1)

Phys. B (1)

W. Leutz and G. Maret, Phys. B 204, 14 (1995).
[CrossRef]

Other (2)

S. Lévêque, A. C. Boccara, M. Lebec, and H. Saint-Jaimes, in Advances in Optical Imaging and Photon Migration, R. R. Alfano and J. G. Fujimoto, eds., Vol.??2 of OSA Trends in Optics and Photonics Series (Optical Society of America, Washington, D.C., 1996), p. 294.

G. Maret and R. Maynard, in New Aspects of Electromagnetic and Acoustic Wave Diffusion, POAN Research Group, eds., Vol. 144 of Springer Tracts in Modern Physics (Springer-Verlag, Berlin, 1998), pp. 11–16.

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Figures (4)

Fig. 1
Fig. 1

(a) Simulation of a one-dimensional speckle field and (b) real part of the modulated signal at the ultrasonic frequency as a function of pixel position. (c), (d) Sums of the modulated signals as functions of the number of pixels: (c) a single detector that integrates the response of all the pixels and (d) sum of the amplitudes computed for all pixels of a multiple detector.

Fig. 2
Fig. 2

Schematic of the experimental setup.

Fig. 3
Fig. 3

Summing the individual amplitude of each pixel increases the signal linearly, whereas the noise level stays quite low compared with the signal level.

Fig. 4
Fig. 4

One-dimensional image of a modeling clay cylindrical object (diameter, 3  mm; length, 6  mm) buried in the middle of a 1cmthick×4 cm×4 cm turkey breast. To obtain this type of image we scan the transducer perpendicularly to the laser beam. When the focal zone of the ultrasonic transducer is on the light-absorbing object, we see a clear decrease in the modulated light.

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