Patent ID: 7323275

Claim:
A photosensitive composition for volume hologram recording comprising an organic-inorganic hybrid polymer, its partially hydrolyzed polycondensate, its fully hydrolyzed polycondensate, or any combination thereof and an organometallic compound represented by the following general formula 2, further comprising a photopolymerization reactive compound and a photopolymerization initiator, wherein said organic-inorganic hybrid polymer is obtainable by copolymerizing at least said organometallic compound represented by the following general formula 1 and a monomer having an ethylenically unsaturated bonding: R 1 m M 1 (OR 2 ) n General formula 1: wherein M 1 represents a metallic atom, R 1 may be identical or different and represents a group having an ethylenically unsaturated bonding and containing 1-10 carbon atoms, R 2 may be identical or different and is alkyl group containing 1-10 carbon atoms, m+n represents the number of valence of metal M 1 , m≧1 and n≧1, M 2 R 3 n′ General formula 2: wherein M 2 represents a metallic atom, R 3 may be identical or different and is a halogen, an alkyl group, alkoxyl group or acyloxy group containing 10 carbon atoms or less respectively or hydroxyl group, all or portion of these groups may be replaced with chelate ligand, and n′ represents the number of valence of metal M 2 .