PHOTOPOLYMERIZABLE COMPOSITION CONTAINING SQUARYLIUM COMPOUND AND OPTICAL RECORDING MEDIUM FOR VOLUME-TYPE HOLOGRAM

摘要

PROBLEM TO BE SOLVED: To provide a photopolymerizable composition having excellent sensitivity to a light source (YAG laser, argon ion laser, etc.) in a visible region of 450-550 nm having high practicality and an optical recording medium for a volume-type hologram.

SOLUTION: The photopolymerizable composition comprises a squarylium compound represented by general formula (I), a polymerizable monomer and a radical generator. The optical recording medium for a volume-type hologram comprises the same.

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