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Proceedings Paper

Information Storage And Display Techniques Using PLZT Ceramics
Author(s): Cecil E. Land
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Paper Abstract

Information storage, including image storage with gray scale, has been previously reported for PLZT ceramic ferroelectric-photoconductor (FE-PC) devices in which the infomation is stored as spatial variations either of birefringence or of light scattering centers. The FE-PC devices also store information in the form of variable surface deformation. We have discovered recently that nonvolatile, gray-scale images, superior in quality to those achieved with FE-PC devices, can be stored in rhombohedral-phase PLZT ceramics (without photoconductive films) by simultaneously exposing the image on a surface of a ceramic plate using near-UV light and switching the ferroelectric polarization through a portion of the hysteresis loop. This paper reviews some important characteristics of the FE-PC devices and describes the new photoferroelectric image storage mechanisms and devices.

Paper Details

Date Published: 12 January 1977
PDF: 7 pages
Proc. SPIE 0083, Optical Information Processing: Real Time Devices & Novel Techniques, (12 January 1977); doi: 10.1117/12.954898
Show Author Affiliations
Cecil E. Land, Sandia Laboratories (United States)

Published in SPIE Proceedings Vol. 0083:
Optical Information Processing: Real Time Devices & Novel Techniques
David P. Casasent; Alexander A. Sawchuk, Editor(s)

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