Abstract

A joint transform correlator has been demonstrated that incorporates phase conjugation in a BaTiO3 crystal to correct for distortions in a liquid-crystal television (LCTV) spatial light modulator. The optical arrangement permits real-time operation in spite of the relative slowness of the photorefractive effect. Correlation outputs displayed on a video monitor are illustrated for inputs to the LCTV from a video camera viewing a stationary scene. The sensitivity of the correlator to target rotation is also presented.

© 1987 Optical Society of America

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References

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  1. S. Morozumi, K. Oguchi, H. Ohshima, Opt. Eng. 23, 241 (1984).
  2. D. A. Gregory, Appl. Opt. 25, 467 (1986).
    [CrossRef] [PubMed]
  3. D. Casasent, S.-F. Xia, Opt. Lett. 11, 398 (1986).
    [CrossRef] [PubMed]
  4. J. Davis, R. A. Lilly, K. D. Krenz, H. K. Liu, Proc. Soc. Photo-Opt. Instrum. Eng.613 (to be published).
  5. B. Loiseaux, D. Iliaquer, J. P. Huignard, Opt. Eng. 24, 144 (1985).
  6. H.-K. Liu, J. A. Davis, R. A. Lilly, Opt. Lett. 10, 635 (1985).
    [CrossRef] [PubMed]
  7. F. F. S. Yu, X. J. Lu, Opt. Commun. 52,10 (1984).
    [CrossRef]

1986 (2)

1985 (2)

B. Loiseaux, D. Iliaquer, J. P. Huignard, Opt. Eng. 24, 144 (1985).

H.-K. Liu, J. A. Davis, R. A. Lilly, Opt. Lett. 10, 635 (1985).
[CrossRef] [PubMed]

1984 (2)

F. F. S. Yu, X. J. Lu, Opt. Commun. 52,10 (1984).
[CrossRef]

S. Morozumi, K. Oguchi, H. Ohshima, Opt. Eng. 23, 241 (1984).

Casasent, D.

Davis, J.

J. Davis, R. A. Lilly, K. D. Krenz, H. K. Liu, Proc. Soc. Photo-Opt. Instrum. Eng.613 (to be published).

Davis, J. A.

Gregory, D. A.

Huignard, J. P.

B. Loiseaux, D. Iliaquer, J. P. Huignard, Opt. Eng. 24, 144 (1985).

Iliaquer, D.

B. Loiseaux, D. Iliaquer, J. P. Huignard, Opt. Eng. 24, 144 (1985).

Krenz, K. D.

J. Davis, R. A. Lilly, K. D. Krenz, H. K. Liu, Proc. Soc. Photo-Opt. Instrum. Eng.613 (to be published).

Lilly, R. A.

H.-K. Liu, J. A. Davis, R. A. Lilly, Opt. Lett. 10, 635 (1985).
[CrossRef] [PubMed]

J. Davis, R. A. Lilly, K. D. Krenz, H. K. Liu, Proc. Soc. Photo-Opt. Instrum. Eng.613 (to be published).

Liu, H. K.

J. Davis, R. A. Lilly, K. D. Krenz, H. K. Liu, Proc. Soc. Photo-Opt. Instrum. Eng.613 (to be published).

Liu, H.-K.

Loiseaux, B.

B. Loiseaux, D. Iliaquer, J. P. Huignard, Opt. Eng. 24, 144 (1985).

Lu, X. J.

F. F. S. Yu, X. J. Lu, Opt. Commun. 52,10 (1984).
[CrossRef]

Morozumi, S.

S. Morozumi, K. Oguchi, H. Ohshima, Opt. Eng. 23, 241 (1984).

Oguchi, K.

S. Morozumi, K. Oguchi, H. Ohshima, Opt. Eng. 23, 241 (1984).

Ohshima, H.

S. Morozumi, K. Oguchi, H. Ohshima, Opt. Eng. 23, 241 (1984).

Xia, S.-F.

Yu, F. F. S.

F. F. S. Yu, X. J. Lu, Opt. Commun. 52,10 (1984).
[CrossRef]

Appl. Opt. (1)

Opt. Commun. (1)

F. F. S. Yu, X. J. Lu, Opt. Commun. 52,10 (1984).
[CrossRef]

Opt. Eng. (2)

S. Morozumi, K. Oguchi, H. Ohshima, Opt. Eng. 23, 241 (1984).

B. Loiseaux, D. Iliaquer, J. P. Huignard, Opt. Eng. 24, 144 (1985).

Opt. Lett. (2)

Other (1)

J. Davis, R. A. Lilly, K. D. Krenz, H. K. Liu, Proc. Soc. Photo-Opt. Instrum. Eng.613 (to be published).

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Figures (3)

Fig. 1
Fig. 1

Schematic of a joint transform correlator with phase conjugated for distortion correction. C indicates the crystal's positive optic axis.

Fig. 2
Fig. 2

(a) Video monitor display of input to LCTV, (b) phase-conjugated image after a double pass through the LCTV, (c) correlation peaks on a video monitor.

Fig. 3
Fig. 3

Effect on correlation peaks of rotation of upper-right-hand shuttle of Fig. 2(a) for rotations of (a) 0°, (b) 3°, and (c) 10°.

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