Single- and two-photon holographic recordings were performed in a photopolymer material consisting of two types of monomers: an acrylamide (1,4-bis(acryloyl)piperazine) and an epoxide ((bis(4-oxiran-2-ylmethoxy)phenyl) sulfide). Thus, cationic ring-opening polymerization and free-radical polymerization of the monomers were simultaneously initiated. The arylsulfonium salt (2-( N , N , N -triethylammonium)methyl-9-oxo-10-(4-heptyloxyphenyl)-9H-thioxanthenium dihexafluorophosphate) was chosen as the photoinitiator. Effective photopolymerization conditions were found for both (single- and two-photon) photoinitiation modes depending on the recording light intensity. The concentrations of the components (monomers and photoinitiator) in the photopolymer was optimized, and a refractive index change of as much as 0.0015 was achieved. Single- and two-photon holographic recording was investigated in photopolymer material consisting of two types of monomers: acrylamide (BAP) and epoxy (BOPS). Thus a cationic ring-opening polymerization and free-radical polymerization of monomers were initiated simultaneously. The arylsulfonium salt—cationic derivative of thioxanthenonium (CDTX) was chosen as the photoinitiator. The refractive index change n 1 and maximum recording rate ( dn 1 / dt ) max of holographic gratings were found in two-photon photoinitiation modes depending on the concentration of BAP (the molar fraction of BAP) in photopolymer composition.

中文翻译：

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由噻吨酮衍生物光引发的阳离子和自由基联合聚合反应的单光子和双光子记录全息图

在由两种单体组成的光聚合物材料中进行单光子和双光子全息记录：丙烯酰胺（1,4-双（丙烯酰基）哌嗪）和环氧化物（（双（4-环氧乙烷-2-基甲氧基）苯基） ) 硫化物)。因此，同时引发了单体的阳离子开环聚合和自由基聚合。选择芳基锍盐（2-（N，N，N-三乙基铵）甲基-9-氧代-10-（4-庚氧基苯基）-9H-噻吨二六氟磷酸盐）作为光引发剂。根据记录光强度，对于（单光子和双光子）光引发模式都发现了有效的光聚合条件。优化了光聚合物中组分（单体和光引发剂）的浓度，实现了高达 0.0015 的折射率变化。在由两种单体组成的光聚合物材料中研究了单光子和双光子全息记录：丙烯酰胺 (BAP) 和环氧树脂 (BOPS)。因此，同时引发了单体的阳离子开环聚合和自由基聚合。选择芳基锍盐-噻吨阳离子衍生物（CDTX）作为光引发剂。在双光子光引发模式中发现全息光栅的折射率变化 n 1 和最大记录速率 (dn 1 / dt ) max 取决于光聚合物组合物中 BAP 的浓度（BAP 的摩尔分数）。因此，同时引发了单体的阳离子开环聚合和自由基聚合。选择芳基锍盐-噻吨阳离子衍生物（CDTX）作为光引发剂。在双光子光引发模式中发现全息光栅的折射率变化 n 1 和最大记录速率 (dn 1 / dt ) max 取决于光聚合物组合物中 BAP 的浓度（BAP 的摩尔分数）。因此，同时引发了单体的阳离子开环聚合和自由基聚合。选择芳基锍盐-噻吨阳离子衍生物（CDTX）作为光引发剂。在双光子光引发模式中发现全息光栅的折射率变化 n 1 和最大记录速率 (dn 1 / dt ) max 取决于光聚合物组合物中 BAP 的浓度（BAP 的摩尔分数）。