Optical information storage and retrieval

Details Optical information storage and retrieval Optical information storage and retrieval

1981-09-03

1983-12-20

Hecker, Stuart N.

Static information storage and retrieval

Information masking

Transparency

3461351, 369275, G11C 1304

Patent

active

044221592

ABSTRACT:
A process employing bodies that are fabricated to have a specific configuration are useful for the storage of information such as digital data. In one embodiment a material, such as germanium, is etched to produce a structure having a multiplicity of columnar or conical features. By providing a sufficient number of these features per unit area, it is possible to store at a relatively high density a variety of information. This information storage is accomplished by melting the columns or cones in a localized area. If these structures are of the appropriate size and spacing, they appear optically absorbing before melting and a reflective region appears in the treated area. In this manner archival storage of densely packed information is possible.

REFERENCES:
patent: 3406405 (1968-10-01), Somers
patent: 4245229 (1981-01-01), Stephens
Kivits et al., "Summary Abstract: Research on Materials for Optical Storage," J. Vac. Sci. Technol., vol. 18, No. 1, Jan./Feb. 1981, pp. 68-69.
Brody, "Materials for Optical Storage: A State-of-the-Art Survey," Laser Focus, 8/81, pp. 47-52.
Haller et al., "Optical Recording of Information of Microscopically Rough Substrate", IBM Tech. Disc. Bul., vol. 22, No. 3, 8/79, p. 1234.
Craighead et al., "Microscopically Textured Optical Storage Media," Appl. Phys. Lett., vol. 39, No. 7, 10/1/81, pp. 532-534.

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