Method for recording information in an optically readable data m

Details Method for recording information in an optically readable data m Method for recording information in an optically readable data m

1992-06-05

1993-09-07

Dzierzynski, Paul M.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369116, 369112, 369118, 430321, 430323, G11B 700

Patent

active

052435890

ABSTRACT:
In a method for recording information in an optical data memory by surface exturing, a substrate surface is first pre-treated or sensitized by selective irradiation at relatively low fluence. For selectivity of irradiation, a mask, a holographic imaging process, or direct writing may be used. In a second step, the sensitized regions are ablated from the surface by means of spatially non-selective irradiation at a different wavelength and at relatively high fluence.

REFERENCES:
patent: 5171650 (1992-12-01), Ellis et al.
"Die Computerzeitung", Sep. 21, 1983, p. 32.
Applied Physics, B 44, 199-204 (1987).
Applied Physics, A 49, 211-215 (1989).

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