Abstract

A translucent object hidden in a highly scattering medium is shown to be visible when the early portion of the transmitted diffuse pulse (snake photons) is detected. The use of the snake scattered photons to image objects depends on the scattering characteristics along a quasi-straight-line path that the photons traverse across the medium. A translucent object with different scattering characteristics compared with its surrounding medium will change the intensity of the snake photons. By scanning the medium across the laser beam and detecting only the snake photons, a translucent object hidden in a highly scattering medium could be located.

© 1992 Optical Society of America

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References

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1991 (7)

1990 (4)

1987 (1)

E. A. Sickles, Recent Results Cancer Res. 105, 31 (1987).
[Crossref] [PubMed]

1986 (1)

R. Lafrenuere, F. S. Ashkar, A. S. Ketcham, Am. Surg. 52, 123 (1986).

1985 (1)

S. Ertefai, A. E. Profio, Med. Phys. 12, 393 (1985).
[Crossref] [PubMed]

1978 (1)

Alfano, R. R.

Andersson-Engels, S.

Ashkar, F. S.

R. Lafrenuere, F. S. Ashkar, A. S. Ketcham, Am. Surg. 52, 123 (1986).

Berg, R.

Chen, C.

Chen, H.

Chen, Y.

Dilworth, D.

Dilworth, D. S.

Duncan, M. D.

Ertefai, S.

S. Ertefai, A. E. Profio, Med. Phys. 12, 393 (1985).
[Crossref] [PubMed]

Hebden, J. C.

Ho, P. P.

L. Wang, P. P. Ho, C. Liu, G. Zhang, R. R. Alfano, Science 253, 769 (1991).
[Crossref] [PubMed]

Ishimaru, A.

Jarlman, O.

Ketcham, A. S.

R. Lafrenuere, F. S. Ashkar, A. S. Ketcham, Am. Surg. 52, 123 (1986).

Kruger, R. A.

Lafrenuere, R.

R. Lafrenuere, F. S. Ashkar, A. S. Ketcham, Am. Surg. 52, 123 (1986).

Leith, E.

Leith, E. N.

Liu, C.

L. Wang, P. P. Ho, C. Liu, G. Zhang, R. R. Alfano, Science 253, 769 (1991).
[Crossref] [PubMed]

Liu, F.

F. Liu, K. M. Yoo, R. R. Alfano, Opt. Lett. 16, 351 (1991).
[Crossref] [PubMed]

K. M. Yoo, F. Liu, R. R. Alfano, Phys. Rev. Lett. 64, 2647 (1990).
[Crossref] [PubMed]

Lopez, J.

Lopez, J. L.

Mahon, R.

Profio, A. E.

S. Ertefai, A. E. Profio, Med. Phys. 12, 393 (1985).
[Crossref] [PubMed]

Reintjes, J.

Sickles, E. A.

E. A. Sickles, Recent Results Cancer Res. 105, 31 (1987).
[Crossref] [PubMed]

Sun, P. C.

Svanberg, S.

Tankersley, L. L.

Valdmanis, J.

Wang, L.

L. Wang, P. P. Ho, C. Liu, G. Zhang, R. R. Alfano, Science 253, 769 (1991).
[Crossref] [PubMed]

Wong, K. S.

Xing, Q.

Yoo, K. M.

Zhang, G.

L. Wang, P. P. Ho, C. Liu, G. Zhang, R. R. Alfano, Science 253, 769 (1991).
[Crossref] [PubMed]

Am. Surg. (1)

R. Lafrenuere, F. S. Ashkar, A. S. Ketcham, Am. Surg. 52, 123 (1986).

Appl. Opt. (3)

Med. Phys. (1)

S. Ertefai, A. E. Profio, Med. Phys. 12, 393 (1985).
[Crossref] [PubMed]

Opt. Lett. (7)

Phys. Rev. Lett. (1)

K. M. Yoo, F. Liu, R. R. Alfano, Phys. Rev. Lett. 64, 2647 (1990).
[Crossref] [PubMed]

Recent Results Cancer Res. (1)

E. A. Sickles, Recent Results Cancer Res. 105, 31 (1987).
[Crossref] [PubMed]

Science (1)

L. Wang, P. P. Ho, C. Liu, G. Zhang, R. R. Alfano, Science 253, 769 (1991).
[Crossref] [PubMed]

Other (1)

H. P. Baltes, ed., Inverse Source Problems in Optics (Springer-Verlag, Berlin, 1978).
[Crossref]

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Figures (3)

Fig. 1
Fig. 1

Schematic diagram of the experimental time-resolved imaging setup. P.D., photodiode; T.S., motorized translational stage.

Fig. 2
Fig. 2

(a) Transmitted pulse through the sample at positions r = 0, 5, and 10 mm. The lt values for the scattering object and its surrounding medium are 2.2 and 4.4 mm, respectively. Inset: the structure of the sample used. (b) The integrated intensity from 240 to 290 ps of the transmitted pulse through the sample at various displacements of the incident beam r from the center position of the object’s location.

Fig. 3
Fig. 3

(a) Transmitted pulse through the sample at positions r = 0, 6, and 10 mm. The lt values for the scattering object and its surrounding medium are 8.8 and 4.4 mm, respectively. (b) The integrated intensity from 240 to 290 ps of the transmitted pulse through the sample at various displacements of the incident beam r from the center position of the object’s location.

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