초록 ▼

The invention includes a method of manufacturing a fluorescent 3-D optical memory device implementing an active medium capable of storing information at high information density, and an optical memory device manufactured by this method. The active medium employed in the present invention is a materi

The invention includes a method of manufacturing a fluorescent 3-D optical memory device implementing an active medium capable of storing information at high information density, and an optical memory device manufactured by this method. The active medium employed in the present invention is a material capable of existing in at least 2 isomeric forms. Transition from one form to another can be induced upon illuminating this material by a "writing" electromagnetic radiation having a first spectrum. At the same time the other isomeric form is capable of fluorescence upon illuminating this material by a "reading" electromagnetic radiation with a second spectrum. By virtue of illuminating with a radiation having the first spectrum there are created elemental cells within a medium material, containing substantially the same isomeric form thereof, which can be either that form which is capable of fluorescence or the other one which is not. The information is stored within the medium as numerical values associated with the amount of one of the isomeric forms of active medium contained within elemental cells distributed within the active medium.

대표청구항 ▼

[ We claim:] [34.]34. A 3-D optical memory comprisisnga)--a substrate; andb)--a plurality of layers each containing an active medium material existing either in a first form, which is fluorescent upon illumination thereof by a single beam of a first electromagnetic radiationor existing in a second f

[ We claim:] [34.]34. A 3-D optical memory comprisisnga)--a substrate; andb)--a plurality of layers each containing an active medium material existing either in a first form, which is fluorescent upon illumination thereof by a single beam of a first electromagnetic radiationor existing in a second form, which is not fluorescent upon illumination thereof by said first electromagnetic radiation, wherein transfer from one form to another can be effected by a one-photon absorption process by illuminating said material by a single beam of a second electromagnetic radiation defined by a spectrum differing of the spectrum of said first radiation.