PHOTOSENSITIVE RESIN COMPOSITION FOR VOLUME PHASE HOLOGRAM RECORDING AND OPTICAL INFORMATION RECORDING MEDIUM USING SAME

摘要

Disclosed is a volume phase hologram recording material excellent in transparency, sensitivity and low curing shrinkage factor. Also disclosed are a volume phase hologram recording medium and a volume phase hologram. Specifically disclosed is a photosensitive resin composition for volume phase hologram recording essentially containing a low-molecular-weight solvent-soluble aromatic copolymer (A) having a constitutional unit derived from a divinyl aromatic compound and a constitutional unit derived from a monovinyl aromatic compound, a radically photopolymerizable compound (B) which is copolymerizable with the solvent-soluble aromatic copolymer (A), and a photopolymerization initiator (C). This photosensitive resin composition further contains either or both of a polymer binder (D) and a plasticizer (E), and the solvent-soluble aromatic copolymer (A) is contained in an amount of 5-60% by weight.