Static information storage and retrieval – Information masking – Diffraction
Patent
1990-07-05
1993-02-02
Fears, Terrell W.
Static information storage and retrieval
Information masking
Diffraction
365127, G11C 1304, G11C 1142
Patent
active
051843234
ABSTRACT:
A photorefractive device is disclosed capable of optically coupling intersecting beams of electromagnetic radiation comprised of first and second electrodes for establishing a potential gradient between first and second spaced locations and, interposed between the electrodes, a photorefractive medium comprised of a homogeneous charge neutral organic photoconductor containing organic noncentrosymmetric molecular dipoles capable of imparting to the photorefractive medium a second order polarization susceptibility of greater than 10.sup.-9 esu, the molecular dipoles each containing an electron donor moiety linked through a conjugated .pi. bonding system to an electron acceptor moiety.
REFERENCES:
patent: 4999809 (1991-03-01), Schildkraut et al.
R. Lytel, F. G. Lipscomb, J. Thackara, J. Altman, P. Elizondo, M. Stiller and B. Sullivan, "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.
D. J. Williams, "Organic Polymeric and Non-Polymeric Materials with Large Optical Nonlinearities", Angew. Chem. Int. Ed. Engl. 23, (1984) 690-703.
Chapter 11, "Optical Phase Conjugation in Photorefractive Materials", Optical Phase Conjugation, Academic Press, 1983, pp. 417-425.
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.
E. M. Yeatman and M. E. Caldwell, "Spatial Light Modulation Using Plasmon Resonance", Appl. Phys Lett., vol. 55, No. 7, Aug. 14, 1989, pp. 613-615.
Schildkraut Jay S.
Scozzafava Michael
Williams David J.
Young Ralph H.
Eastman Kodak Company
Fears Terrell W.
Walker Robert Luke
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