Patent ID: 8192898

Claim:
Fluorine-containing volume holographic data recording media having an optical data recording layer interposed between a first substrate and a second substrate, wherein said optical data recording layer has a thickness of not less than 188 μm and is formed using a composition for fluorine-containing volume holographic data recording material to record interference fringes generated by interference of light having excellent coherence as fringes having different refractive indexes, wherein the composition comprises a base polymer (a), a liquid monomer (b) and a photo-initiator (c), said base polymer (a) is an amorphous polymer comprising a fluorine-containing monomer as a structural unit and having a fluorine content of 26 to 80% by mass, said liquid monomer (b) comprises at least one liquid monomer not containing a fluorine containing alkyl moiety (b1) initiating polymerization by means of activated species generated from the photo-initiator (c), said photo-initiator (c) is a compound causing the liquid monomer (b1) to initiate polymerization by exposure to light having excellent coherence, and a refractive index of said liquid monomer (b) is higher than an average refractive index of a mixture of the base polymer (a) and the photo-initiator (c).