Organic medium for thin-phase holography
AssigneeRCA Corporation
InventorsRobert Alfred Bartolini, Allen Bloom
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Abstract
Permanent thin-phase holograms are recorded wherein the recording medium contains a recording layer comprised of an olefinically unsaturated negative photoresist polymer containing an .alpha.-diketone.
Claims6
A method for recording permanent thin-phase holograms wherein holograms are recorded in only one plane which comprises changing with coherent light and without further development processing the refractive index in selected areas of a recording medium and detecting with coherent light the refractive index changes wherein the recording medium comprises a substrate having a recording layer thereon wherein the recording layer comprises an olefinically unsaturated negative photoresist polymer containing a soluble .alpha.-diketone which has the formula ##STR3## wherein R and R' independently are selected from the group consisting of methyl, branched chain alkyl and cyclic hydrocarbon groups wherein the carbon atoms are part of an aromatic or aliphatic ring and R and R' together can form part of an aromatic or aliphatic ring;
- and x is an integer of 1 to 2.
Dependencies are inferred from the claim text.