| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a volume type hologram photosensitive composition that has high diffraction efficiency and a small shift of a diffraction peak from a recorded wavelength.SOLUTION: A volume type hologram photosensitive composition contains: acrylic polymer; a bi-functional or higher acrylic monomer having a refractive index higher than that of the acrylic polymer; a photopolymerization initiator; and photosensitizing dye. The acrylic monomer is combined in the range of 40-60 pts.mass relative to 100 pts.mass in total of the acrylic polymer and the acrylic monomer. Thus, high diffraction efficiency is obtained and a shift of a diffraction peak from a recorded wavelength can be made small.</p> |
