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Title: Method and apparatus for bistable optical information storage for erasable optical disks

Abstract

A method and an optical device for bistable storage of optical information, together with reading and erasure of the optical information, using a photoactivated shift in a field dependent phase transition between a metastable or a bias-stabilized ferroelectric (FE) phase and a stable antiferroelectric (AFE) phase in a lead lanthanum zirconate titanate (PLZT). An optical disk contains the PLZT. Writing and erasing of optical information can be accomplished by a light beam normal to the disk. Reading of optical information can be accomplished by a light beam at an incidence angle of 15 to 60 degrees to the normal of the disk. 10 figs.

Inventors:
;
Issue Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
OSTI Identifier:
6177839
Patent Number(s):
7200095
Application Number:
ON: DE89009663
Assignee:
Dept. of Energy
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01B - MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS
G - PHYSICS G11 - INFORMATION STORAGE G11B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
DOE Contract Number:  
AC04-76DP00789
Resource Type:
Patent
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; MEMORY DEVICES; DESIGN; INVENTIONS; LEAD COMPOUNDS; OPTICAL EQUIPMENT; THIN FILMS; EQUIPMENT; FILMS; 990220* - Computers, Computerized Models, & Computer Programs- (1987-1989)

Citation Formats

Land, C. E., and McKinney, I. D. Method and apparatus for bistable optical information storage for erasable optical disks. United States: N. p., 1988. Web.
Land, C. E., & McKinney, I. D. Method and apparatus for bistable optical information storage for erasable optical disks. United States.
Land, C. E., and McKinney, I. D. Tue . "Method and apparatus for bistable optical information storage for erasable optical disks". United States. https://www.osti.gov/servlets/purl/6177839.
@article{osti_6177839,
title = {Method and apparatus for bistable optical information storage for erasable optical disks},
author = {Land, C. E. and McKinney, I. D.},
abstractNote = {A method and an optical device for bistable storage of optical information, together with reading and erasure of the optical information, using a photoactivated shift in a field dependent phase transition between a metastable or a bias-stabilized ferroelectric (FE) phase and a stable antiferroelectric (AFE) phase in a lead lanthanum zirconate titanate (PLZT). An optical disk contains the PLZT. Writing and erasing of optical information can be accomplished by a light beam normal to the disk. Reading of optical information can be accomplished by a light beam at an incidence angle of 15 to 60 degrees to the normal of the disk. 10 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1988},
month = {5}
}