Optical memory.

摘要

A memory device for optically storing and retrieving information comprising a substrate and a recording layer supported on the substrate. The recording layer comprises a chemically stable dielectric material and a semiconductor which has an optical property that changes reversibly as a function of the intensity of a laser beam applied through the substrate. A multilayered optical disc memory comprising a substrate, a recording layer formed on the substrate and a metallic layer formed on the recording layer, and a method of optically storing and retrieving information by using the above-described optical disc memory, are also disclosed.