Frequency selective optical data storage system

Details Frequency selective optical data storage system Frequency selective optical data storage system

1977-02-14

1978-07-18

Hecker, Stuart N.

Static information storage and retrieval

Radiant energy

Color centers

G11C 1304

Patent

active

041019768

ABSTRACT:
An optical data storage system and method that utilizes the frequency dimension to increase the storage capacity significantly. The system includes a storage material, for example, in the form of a block, adapted to undergo a photo induced reaction upon exposure to light and which exhibits inhomogeneous absorption line broadening. Data bits are stored by selective photo induced reactions induced by a narrow band laser at specific frequencies within the broad inhomogeneous line. The lifetime of these photo induced data bits is of the order of years so as to provide a non-volatile storage system. In a preferred embodiment, a material is selected so that the photo induced reaction can be made reversible thereby permitting, when desired, the erasing of the data bits.

REFERENCES:
patent: 3568167 (1971-03-01), Carson
patent: 3654626 (1972-04-01), Geller et al.
patent: 3896420 (1975-07-01), Szabo
patent: 4041476 (1977-08-01), Swainson

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