Abstract

We have demonstrated experimentally a new scheme for mutually pumped phase conjugation with two incoherent beams, using a 0.93-mm-thick plate-formed BaTiO3:Ce crystal. The highest phase was reflectivities obtained in our experiments are 30.5% (in the case of equal incident powers) and 71.6% (in the case of unequal incident powers). The variations of the phase-conjugate reflectivity with incident angles and is intensity ratio have been determined, as has the power-dependent response time.

© 1995 Optical Society of America

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References

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1994 (1)

J. Zhang, Y. Lian, S. X. Dou, P. Ye, Opt. Commun. 110, 631 (1994).
[CrossRef]

1989 (1)

D. Wang, Z. Zhang, Y. Zhu, S. Zhang, P. Ye, Opt. Commun. 73, 495 (1989).
[CrossRef]

1988 (3)

1987 (3)

1986 (1)

Chang, T. Y.

Dou, S. X.

J. Zhang, Y. Lian, S. X. Dou, P. Ye, Opt. Commun. 110, 631 (1994).
[CrossRef]

Eason, R. W.

Ewbank, M. D.

Fischer, B.

He, Q.

Q. He, IEEE J. Quantum Electron. 24, 2507 (1988).
[CrossRef]

Lian, Y.

J. Zhang, Y. Lian, S. X. Dou, P. Ye, Opt. Commun. 110, 631 (1994).
[CrossRef]

Segev, M.

Smout, A. M. C.

Sternklar, S.

Wang, D.

D. Wang, Z. Zhang, Y. Zhu, S. Zhang, P. Ye, Opt. Commun. 73, 495 (1989).
[CrossRef]

Weiss, S.

Ye, P.

J. Zhang, Y. Lian, S. X. Dou, P. Ye, Opt. Commun. 110, 631 (1994).
[CrossRef]

D. Wang, Z. Zhang, Y. Zhu, S. Zhang, P. Ye, Opt. Commun. 73, 495 (1989).
[CrossRef]

Yeh, P.

Zhang, J.

J. Zhang, Y. Lian, S. X. Dou, P. Ye, Opt. Commun. 110, 631 (1994).
[CrossRef]

Zhang, S.

D. Wang, Z. Zhang, Y. Zhu, S. Zhang, P. Ye, Opt. Commun. 73, 495 (1989).
[CrossRef]

Zhang, Z.

D. Wang, Z. Zhang, Y. Zhu, S. Zhang, P. Ye, Opt. Commun. 73, 495 (1989).
[CrossRef]

Zhu, Y.

D. Wang, Z. Zhang, Y. Zhu, S. Zhang, P. Ye, Opt. Commun. 73, 495 (1989).
[CrossRef]

Appl. Opt. (1)

IEEE J. Quantum Electron. (1)

Q. He, IEEE J. Quantum Electron. 24, 2507 (1988).
[CrossRef]

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

Opt. Commun. (2)

J. Zhang, Y. Lian, S. X. Dou, P. Ye, Opt. Commun. 110, 631 (1994).
[CrossRef]

D. Wang, Z. Zhang, Y. Zhu, S. Zhang, P. Ye, Opt. Commun. 73, 495 (1989).
[CrossRef]

Opt. Eng. (1)

S. Weiss, S. Sternklar, B. Fischer, Opt. Eng. 26, 423 (1987).

Opt. Lett. (3)

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Figures (6)

Fig. 1
Fig. 1

Schematic diagram of the PPC. θ1 and θ2 are angles between the crystal’s c axis and the incident beam (I1 and I2, respectively) or the PC reflections (I1* and I2*, respectively). α is the external angle between the two incident beams. d is the distance between the two incident points at the +c face.

Fig. 2
Fig. 2

Photographs of the beam interaction paths inside the 0.93-mm-thick BaTiO3:Ce crystal for different d when α = 137°, I1 = I2 = 10.0 mW, and θ1 = θ2. (a) d = 1.0 mm, (b) d = 1.4 mm, (c) d = 1.7 mm, (d) d = 2.9 mm.

Fig. 3
Fig. 3

Phase-conjugate reflectivities of the PPC with a V-shaped coupling channel (●) and with a W-shaped coupling channel (■) when θ1 = θ2 and I1 = I2 = 10.0 mW.

Fig. 4
Fig. 4

Phase-conjugate reflectivity of a V-channel PPC of beam 1 as a function of incident beam intensity ratio for a constant intensity in beam 2 of 8.0 mW when d = 1 mm, α = 134°, and θ1 = θ2.

Fig. 5
Fig. 5

Rate of photorefractive formation, which is the reciprocal of the time between the two incident beams’ turning on and the PC reflectivity’s reaching (1 − e−1) of its maximum, in the V-channel PPC versus optical power of either incident beam (two incident beams were approximately equal in power and intensity) when d = 1.0 mm, α = 134°, and θ1 = θ2.

Fig. 6
Fig. 6

Phase-conjugate images produced by the PPC’s with a distorter when α = 134°, d = 1.0 mm, and θ1 = θ2. (a) Image reflected by a normal mirror without a distorter, (b) image reflected by a normal mirror with a distorter, (c) image reflected by the V-channel PPC with a distorter, (d) image reflected by the W-channel PPC with a distorter.

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