Abstract

Microscopic images of a test chart hidden behind a slab of a highly scattering medium were significantly improved by incorporation of a spatial filter located at the back Fourier-transform plane of the objective lens of a microscope. The image quality was shown to be improved further by detection of only the early-arriving photons through time-resolved detection in combination with spatial filtering.

© 1994 Optical Society of America

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References

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    [CrossRef]

1993 (3)

1992 (1)

1991 (3)

1990 (1)

Alfano, R. R.

Chen, H.

Chen, Y.

Das, B. B.

Dilworth, D.

Ditchburn, R. W.

R. W. Ditchburn, Light, 2nd ed. (Wiley, New York, 1963), pp. 290–295.

Duncan, M. D.

Fujimoto, J. G.

Hee, M. R.

Ho, P. P.

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

Izatt, J. A.

Jacobson, J. M.

Kempe, M.

Leith, E.

Liu, C.

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

Lopez, J.

Mahon, R.

Pedrotti, F.

F. Pedrotti, L. Pedrotti, Introduction to Optics, 2nd ed. (Prentice-Hall, Englewood Cliffs, N.J., 1993), pp. 135–138.

Pedrotti, L.

F. Pedrotti, L. Pedrotti, Introduction to Optics, 2nd ed. (Prentice-Hall, Englewood Cliffs, N.J., 1993), pp. 135–138.

Reintjes, J.

Rudolph, W.

Smith, F. G.

F. G. Smith, J. H. Thomson, Optics, 2nd ed., Manchester Physics Series (Wiley, New York, 1988), pp. 214–217.

Stamm, U.

Swanson, E. A.

Tankersley, L. L.

Thomson, J. H.

F. G. Smith, J. H. Thomson, Optics, 2nd ed., Manchester Physics Series (Wiley, New York, 1988), pp. 214–217.

Valdmanis, J.

VanderLugt, A.

A. VanderLugt, Optical Signal Processing (Wiley Interscience, New York, 1992), pp. 95–101.

Wang, L. M.

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

Wilhelmi, B.

Yoo, K. M.

Zhang, G.

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

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

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

Opt. Lett. (5)

Science (1)

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

Other (5)

F. G. Smith, J. H. Thomson, Optics, 2nd ed., Manchester Physics Series (Wiley, New York, 1988), pp. 214–217.

F. Pedrotti, L. Pedrotti, Introduction to Optics, 2nd ed. (Prentice-Hall, Englewood Cliffs, N.J., 1993), pp. 135–138.

R. W. Ditchburn, Light, 2nd ed. (Wiley, New York, 1963), pp. 290–295.

J. B. Pawley, ed., Handbook of Biological Confocal Microscopy (Plenum, New York, 1989).

A. VanderLugt, Optical Signal Processing (Wiley Interscience, New York, 1992), pp. 95–101.

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Figures (5)

Fig. 1
Fig. 1

Schematic diagram of the experimental setup.

Fig. 2
Fig. 2

Images of a U.S. Air Force bar chart of 176.7-μm opaque or transparent segment size without a scattering medium: (a) with a conventional microscope mode without an aperture and (b) with a conventional microscope mode with a 0.5-mm aperture.

Fig. 3
Fig. 3

Images of the bar chart hidden behind a 2-mm-thick 1.5% Intralipid scattering medium obtained in the steady-state mode with (a) no spatial filter and (b) 3-mm-, (c) 1-mm-, and (d) 0.5-mm-diameter spatial filters.

Fig. 4
Fig. 4

Image of the bar chart under the same experimental conditions as in Fig. 2(b), taken in a time-resolved mode.

Fig. 5
Fig. 5

Images of the bar chart obtained under the same experimental conditions as in Fig. 3 but taken in the time-resolved mode with (a) no spatial filter and (b) 3-mm-, (c) 1-mm-, and (d) 0.5-mm-diameter spatial filters.

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