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研究了单体及粘结剂等成份对全息光致聚合物薄膜光存储性能的影响。在相同引发条件下,以丙烯酰胺作为单体时,光聚物的衍射效率明显高于以丙烯酸和N 羟甲基丙烯酰胺作为单体时光聚物的衍射效率。向丙烯酰胺中加入少量N 羟甲基丙烯酰胺,可以改善膜表面的光学质量,降低散射光强度,并提高膜的保存时间。在聚乙烯醇膜中单体聚合程度明显优于在聚乙烯吡咯烷酮中的程度,在大分子量的聚乙烯醇中的衍射效率及感光灵敏度高于在小分子量中的衍射效率和感光灵敏度,而且大分子量的聚乙烯醇能够制备厚膜,这是实现全息海量存储的一个重要因素。
The effects of monomers and binders on the optical storage properties of holographic photopolymer films were investigated. Under the same conditions, the diffraction efficiency of photopolymers was significantly higher than that of acrylamide when the diffraction efficiency of photopolymer was higher than that of acrylic acid and N-methylol acrylamide. Addition of a small amount of N-methylolacrylamide to acrylamide improves the optical quality of the film surface, reduces the intensity of scattered light, and increases the shelf life of the film. The degree of polymerization of the monomer in the polyvinyl alcohol film is significantly superior to that in the polyvinylpyrrolidone, the diffraction efficiency and the photosensitivity in the high molecular weight polyvinyl alcohol are higher than those in the small molecular weight, and the large Polyvinyl alcohol of a molecular weight enables the preparation of thick films, which is an important factor in the holographic storage of holograms.