Information Storage And Display Techniques Using PLZT Ceramics

Cecil E. Land

doi:10.1117/12.954898

12 January 1977 Information Storage And Display Techniques Using PLZT Ceramics

Cecil E. Land

Proceedings Volume 0083, Optical Information Processing: Real Time Devices & Novel Techniques; (1977) https://doi.org/10.1117/12.954898
Event: 20th Annual Technical Symposium, 1976, San Diego, United States

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.

Citation Download Citation

Cecil E. Land "Information Storage And Display Techniques Using PLZT Ceramics", Proc. SPIE 0083, Optical Information Processing: Real Time Devices & Novel Techniques, (12 January 1977); https://doi.org/10.1117/12.954898

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