The present invention is to provide: a photosensitive composition for volume hologram recording and a photosensitive substrate for volume hologram recording, which provide increased sensitivity during hologram recording and a high refractive index modulation amount, and which do not inhibit the decolorization of the sensitizing dye; and a volume hologram recorded medium which provides high-luminance hologram images with increased productivity. Disclosed is a photosensitive composition for volume hologram recording, comprising: a photopolymerizable monomer, a photopolymerization initiator, a sensitizing dye for sensitizing the photopolymerization initiator, a binder resin, and a thiol group-containing compound, wherein the photopolymerizable monomer contains a photoradically polymerizable monomer and a photocationically polymerizable monomer; wherein the thiol group-containing compound is a chain transfer agent for the photoradically polymerizable monomer and is a polyfunctional secondary thiol compound having two or more secondary thiol groups per molecule; and wherein the content of the thiol group-containing compound is 1.5 to 30 parts by mass with respect to 100 parts by mass of the photoradically polymerizable monomer.
本发明旨在提供:一种用于体积全息图记录的感光组合物和一种用于体积全息图记录的感光基板,其在全息图记录期间提供更高的灵敏度和高折射率调制量,并且不会抑制感光
染料的脱色;以及一种体积全息图记录介质,其可提供高亮度全息图像并提高生产率。公开了一种用于体积全息图记录的光敏组合物,包括一种可光聚合单体、一种光聚合
引发剂、一种用于使光聚合
引发剂敏化的敏化
染料、一种粘合剂
树脂和一种含
硫醇基团的化合物,其中可光聚合单体包含一种可光降解聚合单体和一种可光定位聚合单体;其中,含
硫醇基化合物是光可聚合单体的链转移剂,并且是多官能团仲
硫醇化合物,每个分子具有两个或两个以上的仲
硫醇基团;以及 其中,含
硫醇基化合物的含量为 1.5至30质量份(相对于100质量份的可顺光聚合单体)。