Carretero L, Murciano A, Blaya S, Ulibarrena M, Fimia A
Opt Express. 2004 Apr 19;12(8):1780-7. doi: 10.1364/opex.12.001780.
In this paper, we describe a photopolymerizable silica glass based on acrylamide (AA) and N,N'-methylenebisacrylamide (BMA) as monomers, triethanolamine (TEA) as coinitiator and yellowish eosin (YE) as photoinitiator. We studied different compositions, analyzing the diffraction efficiency, energetic exposure and effective thickness obtained in the holographic gratings. A diffraction efficiency of 60 % with an energetic exposure of 139 mJ/cm(2) and an effective thickness of 1.1 mm were obtained. Also, by varying the photopolymerizable composition of the material diffraction efficiencies higher than 80 % can be reached with an energetic exposure of 10 mJ/cm(2) and an effective thickness of 113 microm. These values are similar to those obtained in conventional photopolymer systems in polyvinylalcohol and better than the values reached in other sol-gel compositions. Also, 9 holograms were angular multiplexed with diffraction efficiencies between 6 and 12 % and total exposure time shorter than 150 ms, with a dynamic range M/#= 2.4.
在本文中，我们描述了一种基于丙烯酰胺（AA）和N，N'-亚甲基双丙烯酰胺（BMA）作为单体、三乙醇胺（TEA）作为共引发剂以及淡黄色曙红（YE）作为光引发剂的可光聚合二氧化硅玻璃。我们研究了不同的组成，分析了全息光栅中获得的衍射效率、能量曝光和有效厚度。获得了衍射效率为60%、能量曝光为139 mJ/cm²以及有效厚度为1.1 mm的结果。此外，通过改变材料的可光聚合组成，在能量曝光为10 mJ/cm²和有效厚度为113微米的情况下，衍射效率可以达到80%以上。这些值与在聚乙烯醇中的传统光聚合物体系中获得的值相似，并且优于在其他溶胶 - 凝胶组成中达到的值。此外，9个全息图进行了角度复用，衍射效率在6%至12%之间，总曝光时间短于150 ms，动态范围M/# = 2.4。
