Static information storage and retrieval – Radiant energy
Patent
1990-03-09
1991-03-12
Fears, Terrell W.
Static information storage and retrieval
Radiant energy
365120, 365124, 365127, 430 20, G11C 1300
Patent
active
049998099
ABSTRACT:
A photorefractive device is disclosed comprised of a first and second electrodes for establishing a potential gradient between first and second spaced locations and, interposed between the first and second electrodes, intermediate means capable of producing in a readout beam of electromagnetic radiation an image pattern corresponding to that present in a spatially intersecting writing beam of electromagnetic radiation when a potential gradient is applied to the intermediate means by said first and second electrodes. The intermediate means consists of a photorefractive layer capable of internally storing the image pattern of the writing beam created by its interference with an intersecting reference beam of electromagnetic radiation, the photorefractive layer being comprised of a homogeneous organic photoconductor containing organic noncentrosymmetric molecular dipoles capable of imparting to the photorefractive layer a second order polarization susceptibility of greater than 10.sup.-9 esu.
REFERENCES:
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G. Moddel, K. M. Johnson, W. Li, and R. A. Rice, "High Speed Binary Optically Addressed Spatial Light Modulator", Appl. Phys. Lett., vol. 55, No. 6, Aug. 7, 1989, pp. 537-539.
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R. Lytel, F. G. Lipscomb, J. Thackara, J. Altman, P. Elizondo, M. Stiller and B. Sullivna, "Nonlinear and Electro-Optic Organic Devices", pp. 415-426, Nonlinear Optical and Electroactive Polymers (P. N. Prasad and D. R. Ulrich, Editors), Plenum Press, N.Y., 1988.
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Schildkraut Jay S.
Scozzafava Michael
Williams David J.
Young Ralph H.
Eastman Kodak Company
Fears Terrell W.
Thomas Carl O.
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