Abstract

We have observed dark decay rates in BaTiO3 crystals at elevated temperatures that correspond to dark decay times as long as 2200 years at room temperature. Our investigations have shown that cerium is a desirable dopant in BaTiO3 for enhancing the dark storage time.

© 1996 Optical Society of America

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References

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  1. H. Kurz, Philips Tech. Rev. 37, 109 (1977).
  2. A. M. Glass, Opt. Eng. 17, 470 (1978).
  3. E. Krätzig, R. OrlowskiAppl. Phys. 15, 133 (1978).
    [CrossRef]
  4. K.-H. Hellwege, ed., Ferroelectrics: Oxides, Vol. III/16a of Landolt–Börnstein Numerical Data and Functional Relationships in Science and Technology (Springer-Verlag, Berlin, 1981).
  5. C. N. Berglund, W. S. Baer, Phys. Rev. 157, 358 (1967).
    [CrossRef]
  6. J. Y. Chang, M. H. Garrett, P. Tayebati, H. P. Jenssen, C. Warde, J. Opt. Soc. Am. B 12, 248 (1995).
    [CrossRef]
  7. Purchased from ITI Electro-Optics.

1995 (1)

1978 (2)

A. M. Glass, Opt. Eng. 17, 470 (1978).

E. Krätzig, R. OrlowskiAppl. Phys. 15, 133 (1978).
[CrossRef]

1977 (1)

H. Kurz, Philips Tech. Rev. 37, 109 (1977).

1967 (1)

C. N. Berglund, W. S. Baer, Phys. Rev. 157, 358 (1967).
[CrossRef]

Baer, W. S.

C. N. Berglund, W. S. Baer, Phys. Rev. 157, 358 (1967).
[CrossRef]

Berglund, C. N.

C. N. Berglund, W. S. Baer, Phys. Rev. 157, 358 (1967).
[CrossRef]

Chang, J. Y.

Garrett, M. H.

Glass, A. M.

A. M. Glass, Opt. Eng. 17, 470 (1978).

Jenssen, H. P.

Krätzig, E.

E. Krätzig, R. OrlowskiAppl. Phys. 15, 133 (1978).
[CrossRef]

Kurz, H.

H. Kurz, Philips Tech. Rev. 37, 109 (1977).

Orlowski, R.

E. Krätzig, R. OrlowskiAppl. Phys. 15, 133 (1978).
[CrossRef]

Tayebati, P.

Warde, C.

Appl. Phys. (1)

E. Krätzig, R. OrlowskiAppl. Phys. 15, 133 (1978).
[CrossRef]

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

Opt. Eng. (1)

A. M. Glass, Opt. Eng. 17, 470 (1978).

Philips Tech. Rev. (1)

H. Kurz, Philips Tech. Rev. 37, 109 (1977).

Phys. Rev. (1)

C. N. Berglund, W. S. Baer, Phys. Rev. 157, 358 (1967).
[CrossRef]

Other (2)

Purchased from ITI Electro-Optics.

K.-H. Hellwege, ed., Ferroelectrics: Oxides, Vol. III/16a of Landolt–Börnstein Numerical Data and Functional Relationships in Science and Technology (Springer-Verlag, Berlin, 1981).

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Figures (4)

Fig. 1
Fig. 1

Experimental arrangement for measuring grating dark decay and erasure-induced decay. BS’s, beam splitters.

Fig. 2
Fig. 2

Measured diffraction efficiency versus time for three BaTiO3 samples in the dark.

Fig. 3
Fig. 3

Measured values of dark decay time as a function of temperature for four BaTiO3 samples. The solid curves are fits to the data using Eqs. (2) and (3). The uncertainty in the values of the activation energy is estimated to be ~0.05 eV for the Co-doped samples and ~0.1 eV for the other two samples.

Fig. 4
Fig. 4

Measured values of room-temperature dark conductivity for BaTiO3 as a function of Co concentration.

Tables (1)

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Table 1 Spark Source Mass Spectrographic Analysis of Sample FB63A

Equations (3)

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η ( t ) = η ( 0 ) exp ( 2 t / τ dark ) ,
τ D = ε / σ = ε / e μ p p ,
p = p 0 exp ( E a / k B T ) ,

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