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Volume holographic storage technology expands two-dimensional storage to multi-dimensional high-density storage, which can realize the advantages of large data storage capacity and fast data transmission speed. For holographic storage, material selection is very important. Photoinduced polymers are considered as one of the most promising holographic storage materials due to their high resolution, real-time recording and rapid preparation. Among them, phenquinone doped polymethyl methacrylate (PQ/PMMA) photoinduced polymer has negligible shrinkage rate, sensitivity to light polarization, anisotropy and other properties, and can be preserved for a long time, which is a good choice for holographic storage materials. However, due to the low solubility of PQ in methyl methacrylate (MMA), the diffraction efficiency and sensitivity of the material are still limited, which cannot meet the requirements of high speed writing of holographic stored data. In this paper, vinylpyrrolidone (NVP) monomer was introduced into PQ/PMMA photoinduced polymer system. Because PQ has better solubility in NVP, doping NVP monomer into the original system can increase the concentration of PQ from 1.0wt% to 1.2wt %. Compared with the basic PQ/PMMA materials with 1.0wt% PQ, the photosensitivity of the NVP-PQ/PMMA material are increased by 2 times (from 0.35 cm/J to 0.70 cm/J), and the diffraction efficiency are increased by 20%(from 57% to 77%). Finally, by using NVP-PQ/PMMA materials in collinear holography systems, holographic data storage can be achieved faster and with lower bit error rate than basic materials. In conclusion, the introduction of vinylpyrrolidone (NVP) monomer into PQ/PMMA photoinduced polymer system effectively improves the holographic properties of the material and has the potential to be an excellent holographic storage material.
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