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Photorefractive Properties of Cobalt-Doped Barium Titanate

Published online by Cambridge University Press:  21 February 2011

J. Y. Chang ,
M. H. Garrett ,
H. P. Jenssen ,
C. Warde  and
P. Tayebati
J. Y. Chang
Affiliation:
Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Rm 10–372F, Cambridge, MA 02139
M. H. Garrett
Affiliation:
Center for Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Rm 10–372F, Cambridge, MA 02139
H. P. Jenssen
Affiliation:
Center for Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Rm 10–372F, Cambridge, MA 02139
C. Warde
Affiliation:
Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, 77 Massachusetts Ave., Rm 10–372F, Cambridge, MA 02139
P. Tayebati
Affiliation:
Foster Miller, Inc., 350 Second Ave., Waltham, MA 02154
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Abstract

A series of cobalt-doped barium titanate crystals were grown that have high beam-coupling gain. Our photorefractive characterization shows that with increasing cobalt concentration in the crystal a deep level is formed and the relative effect of shallow levels on the space-charge field amplitude diminishes. This gives the crystal a long dark storage time. We find that cobalt-doping in barium titanate increases the two-beam coupling gain by reducing the dark conductivity and increasing the total effective trap density.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 228: Symposium N – Materials for Optical Information Processing , 1991 , 157
Copyright
Copyright © Materials Research Society 1992

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References

REFERENCES

[1] Rytz, D., Wechsler, B. A., Garrett, M. H., Nelson, C. C. and Schwartz, R. N., J. Opt. Soc. Am. B 72(12), 2245 (1990).CrossRefGoogle Scholar
[2] Mahgerefteh, D. and Feinberg, J., Phys. Rev. Lett. 64, 2195 (1990).Google Scholar
[3] Tayebati, P. and Mahgerefteh, D., J. Opt. Soc. Am. B, May (1991).Google Scholar
[4] Brost, G. A. and Motes, R. A., Opt. Lett. 15, 1194 (1990).Google Scholar
[5] Kukhtarev, N. V., Markov, V. B., Odoulov, S. G., Soskin, M. S. and Vinetskii, V. L., Ferroelectrics 22, 949 (1979).Google Scholar
[6] Knyazkov, A. V. and Lobanov, M. N., Sov. Texh. Phys. Lett. 11, 365 (1985).Google Scholar
[7] Pierce, R. M., Cudney, R. S., Bacher, G. D. and J. Feinberg, Opt. Lett. 15,414 (1990)Google Scholar