Abstract

Using a nominally undoped crystal of photorefractive BaTiO3, we have examined self-pumped phase conjugation at near-infrared wavelengths. We report reflectivities as high as 74% between 720 and 800 nm. As expected, the crystal response time increases significantly at longer wavelengths. We believe that this value of reflectivity in the self-pumped geometry is the highest reported to date for this range of wavelengths with the use of a nominally undoped crystal.

© 1992 Optical Society of America

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References

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    [CrossRef] [PubMed]
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    [CrossRef]
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    [CrossRef] [PubMed]
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    [CrossRef] [PubMed]
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    [CrossRef]
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    [CrossRef] [PubMed]

1992 (1)

H. Y. Zhang, X. H. He, Y. H. Shih, Opt. Commun. 88, 424 (1992).
[CrossRef]

1990 (3)

1986 (1)

D. M. Pepper, Appl. Phys. Lett. 49, 1001 (1986).
[CrossRef]

1982 (1)

Baer, T. M.

Dunning, G. J.

Feinberg, J.

D. Mahgerefteh, J. Feinberg, Phys. Rev. Lett. 64, 2195 (1990).
[CrossRef] [PubMed]

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

He, X. H.

H. Y. Zhang, X. H. He, Y. H. Shih, Opt. Commun. 88, 424 (1992).
[CrossRef]

Keirstead, M. S.

Klein, M. B.

Mahgerefteh, D.

D. Mahgerefteh, J. Feinberg, Phys. Rev. Lett. 64, 2195 (1990).
[CrossRef] [PubMed]

Pepper, D. M.

Rytz, D.

Shih, Y. H.

H. Y. Zhang, X. H. He, Y. H. Shih, Opt. Commun. 88, 424 (1992).
[CrossRef]

Stephens, R. R.

Wechsler, B. A.

Zhang, H. Y.

H. Y. Zhang, X. H. He, Y. H. Shih, Opt. Commun. 88, 424 (1992).
[CrossRef]

Appl. Phys. Lett. (1)

D. M. Pepper, Appl. Phys. Lett. 49, 1001 (1986).
[CrossRef]

Opt. Commun. (1)

H. Y. Zhang, X. H. He, Y. H. Shih, Opt. Commun. 88, 424 (1992).
[CrossRef]

Opt. Lett. (3)

Phys. Rev. Lett. (1)

D. Mahgerefteh, J. Feinberg, Phys. Rev. Lett. 64, 2195 (1990).
[CrossRef] [PubMed]

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Figures (4)

Fig. 1
Fig. 1

Experimental arrangement. P1, P2, polarizers; FR, Faraday rotator; λ/2, half-wave plate. In the final experiment (the measurement of response time against incident power), the VND was replaced by the isolation optics.

Fig. 2
Fig. 2

Graph of phase-conjugate reflectivity against wavelength.

Fig. 3
Fig. 3

Graph of response time against wavelength. The response time is defined as the time taken for the phase-conjugate signal to rise from 10% to 90% of its saturated value. The saturated value was >71% for all wavelengths in this range.

Fig. 4
Fig. 4

Graph of response time against incident power at 760 nm. The straight-line fit indicates an Ix power law, with x = 0.8. Note that 100-mW incident power corresponds to ~2.3 Wcm−2.

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