Compositions and methods for storing holographic data

Details Compositions and methods for storing holographic data Compositions and methods for storing holographic data

2011-03-08

2011-03-08

Angebranndt, Martin J (Department: 1722)

Radiation imagery chemistry: process, composition, or product th

Holographic process, composition, or product

C430S002000, C359S003000

Reexamination Certificate

active

07901839

ABSTRACT:
The present invention provides a method for storing holographic data comprising providing a holographic storage medium comprising an optically transparent substrate including a photochemically active dye having at least two nitrone groups; and irradiating the optically transparent substrate with a holographic interference pattern, wherein the pattern has a first wavelength and an intensity both sufficient to convert, within a volume element of the substrate, at least some of the photochemically active dye into a photo-product, and producing within the irradiated volume element concentration variations of the photo-product corresponding to the holographic interference pattern, thereby producing a first optically readable datum corresponding to the volume element.

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