Abstract

When two mutually incoherent light beams are used as simultaneous inputs to a crystal of BaTiO3, a spontaneously generated loop of light is created that provides a coupling mechanism between the two input beams, resulting in two phase-conjugate outputs. This behavior is discussed, and the phase-conjugate reflectivities are presented as a function of the ratio of input-beam intensities. A simple theory is developed to describe this phenomenon, and the predictions are compared with experimental data.

© 1987 Optical Society of America

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References

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  1. S. Sternklar, S. Weiss, M. Segev, B. Fischer, Opt. Lett. 8, 528 (1986).
    [CrossRef]
  2. R. W. Eason, A. M. C. Smout, Opt. Lett. 11, 51 (1987).
    [CrossRef]
  3. J. O. White, M. Cronin-Golomb, B. Fischer, A. Yariv, Appl. Phys. Lett. 40, 450 (1982).
    [CrossRef]
  4. S. Weiss, S. Sternklar, B. Fischer, Opt. Lett. 12, 114 (1987).
    [CrossRef] [PubMed]
  5. J. Feinberg, Opt. Lett. 7, 486 (1982).
    [CrossRef] [PubMed]
  6. See, for example, J. Feinberg, in Optical Phase Conjugation, R. A. Fischer, ed. (Academic, New York, 1983), pp. 426–429.
  7. M. Cronin-Golomb, J. Paslaski, A. Yariv, Appl. Phys. Lett. 47, 1131 (1985).
    [CrossRef]
  8. A. M. C. Smout, R. W. Eason, M. C. Gower, Opt. Commun. 59, 77 (1986).
    [CrossRef]

1987 (2)

1986 (2)

S. Sternklar, S. Weiss, M. Segev, B. Fischer, Opt. Lett. 8, 528 (1986).
[CrossRef]

A. M. C. Smout, R. W. Eason, M. C. Gower, Opt. Commun. 59, 77 (1986).
[CrossRef]

1985 (1)

M. Cronin-Golomb, J. Paslaski, A. Yariv, Appl. Phys. Lett. 47, 1131 (1985).
[CrossRef]

1982 (2)

J. Feinberg, Opt. Lett. 7, 486 (1982).
[CrossRef] [PubMed]

J. O. White, M. Cronin-Golomb, B. Fischer, A. Yariv, Appl. Phys. Lett. 40, 450 (1982).
[CrossRef]

Cronin-Golomb, M.

M. Cronin-Golomb, J. Paslaski, A. Yariv, Appl. Phys. Lett. 47, 1131 (1985).
[CrossRef]

J. O. White, M. Cronin-Golomb, B. Fischer, A. Yariv, Appl. Phys. Lett. 40, 450 (1982).
[CrossRef]

Eason, R. W.

R. W. Eason, A. M. C. Smout, Opt. Lett. 11, 51 (1987).
[CrossRef]

A. M. C. Smout, R. W. Eason, M. C. Gower, Opt. Commun. 59, 77 (1986).
[CrossRef]

Feinberg, J.

J. Feinberg, Opt. Lett. 7, 486 (1982).
[CrossRef] [PubMed]

See, for example, J. Feinberg, in Optical Phase Conjugation, R. A. Fischer, ed. (Academic, New York, 1983), pp. 426–429.

Fischer, B.

Gower, M. C.

A. M. C. Smout, R. W. Eason, M. C. Gower, Opt. Commun. 59, 77 (1986).
[CrossRef]

Paslaski, J.

M. Cronin-Golomb, J. Paslaski, A. Yariv, Appl. Phys. Lett. 47, 1131 (1985).
[CrossRef]

Segev, M.

Smout, A. M. C.

R. W. Eason, A. M. C. Smout, Opt. Lett. 11, 51 (1987).
[CrossRef]

A. M. C. Smout, R. W. Eason, M. C. Gower, Opt. Commun. 59, 77 (1986).
[CrossRef]

Sternklar, S.

Weiss, S.

White, J. O.

J. O. White, M. Cronin-Golomb, B. Fischer, A. Yariv, Appl. Phys. Lett. 40, 450 (1982).
[CrossRef]

Yariv, A.

M. Cronin-Golomb, J. Paslaski, A. Yariv, Appl. Phys. Lett. 47, 1131 (1985).
[CrossRef]

J. O. White, M. Cronin-Golomb, B. Fischer, A. Yariv, Appl. Phys. Lett. 40, 450 (1982).
[CrossRef]

Appl. Phys. Lett. (2)

J. O. White, M. Cronin-Golomb, B. Fischer, A. Yariv, Appl. Phys. Lett. 40, 450 (1982).
[CrossRef]

M. Cronin-Golomb, J. Paslaski, A. Yariv, Appl. Phys. Lett. 47, 1131 (1985).
[CrossRef]

Opt. Commun. (1)

A. M. C. Smout, R. W. Eason, M. C. Gower, Opt. Commun. 59, 77 (1986).
[CrossRef]

Opt. Lett. (4)

Other (1)

See, for example, J. Feinberg, in Optical Phase Conjugation, R. A. Fischer, ed. (Academic, New York, 1983), pp. 426–429.

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Figures (4)

Fig. 1
Fig. 1

Photomicrographs taken from above the BaTiO3 crystal showing coupling-loop geometries for various lateral beam positions and incident angles: (a) x1 = 2.7 mm, x2 = 1.3 mm, θ = 34 deg; (b) x1 = 3.7 mm, x2 = 1.3 mm, θ = 34 deg.

Fig. 2
Fig. 2

Schematic diagram outlining main features in Fig. 1, with beam nomenclature for use in text.

Fig. 3
Fig. 3

Diagram of experimental apparatus. Beams 1 and 2 are mutually incoherent and extraordinarily polarized. M's, mirrors. SF's, spatial filters.

Fig. 4
Fig. 4

(a) Graph of experimental PC output intensities as a function of input beam intensity ratio R, with visually best-fit theoretical model superimposed. The beam positions are as in Fig. 1(a), and the model parameters are A = 0.97, B = 1.91, and T = 0.44. (b) Graph of PC output intensity ratio as a function of R, showing the fit to a predicted straight line, with data from (a).

Equations (9)

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I 1 = η A I 1 , I 1 = ( 1 η A ) I 1 .
I 2 * = η β I 1 T = η B η A I 1 T .
I 1 * = η A η B I 2 T ,
I 1 * / I 2 * = I 2 / I 1 = R .
η | E | 2 m 2 ,
η A = A m A 2 ,
m A 2 = 4 I 1 I 1 / ( I 1 + I 1 + I 2 T ) 2 .
η A = 1 [ ( 1 + η B R T ) 2 / 4 A ] ,
η B = 1 [ ( 1 + η A R 1 T ) 2 / 4 B ] .

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