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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 an 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.

Inventors:
 [1];  [1]
  1. (Albuquerque, NM)
Publication Date:
Research Org.:
AT & T CORP
OSTI Identifier:
867573
Patent Number(s):
US 4965784
Assignee:
Sandia Corporation (Albuquerque, NM) SNL
DOE Contract Number:  
AC04-76DP00789
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; apparatus; bistable; optical; information; storage; erasable; disks; device; reading; erasure; photoactivated; shift; field; dependent; phase; transition; metastable; bias-stabilized; ferroelectric; stable; antiferroelectric; afe; lead; lanthanum; zirconate; titanate; plzt; disk; contains; writing; erasing; accomplished; light; beam; normal; incidence; angle; 15; 60; degrees; zirconate titanate; light beam; optical device; information storage; optical information; incidence angle; phase transition; lanthanum zirconate; lead lanthanum; bistable optical; bistable storage; /369/

Citation Formats

Land, Cecil E., and McKinney, Ira D. Method and apparatus for bistable optical information storage for erasable optical disks. United States: N. p., 1990. Web.
Land, Cecil E., & McKinney, Ira D. Method and apparatus for bistable optical information storage for erasable optical disks. United States.
Land, Cecil E., and McKinney, Ira D. Mon . "Method and apparatus for bistable optical information storage for erasable optical disks". United States. https://www.osti.gov/servlets/purl/867573.
@article{osti_867573,
title = {Method and apparatus for bistable optical information storage for erasable optical disks},
author = {Land, Cecil E. and McKinney, Ira 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 an 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}

Patent:

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