School of Optics and photonics, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, People's Republic of China. Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan.
Nanotechnology. 2019 Apr 5;30(14):145202. doi: 10.1088/1361-6528/aaf070. Epub 2018 Nov 13.
High-performance material plays a crucial role in holographic data storage, which is a noteworthy technology with potential applications in the field of high capacity data storage. We report on a new kind of holographic storage material based on aluminum nanoparticles (Al NPs) dispersed phenanthrenequinone-doped poly(methyl methacrylate) (PQ/PMMA) photopolymer. Al NPs are efficiently synthesized in a monomer solvent using laser ablation in liquids without chemical precursors. It is shown that an increase in diffraction efficiency and recording sensitivity is achieved in both traditional holography and polarization holography by doping with Al NPs. After 4 h of ablation, the new material exhibited an improvement in the diffraction efficiency for both traditional holography and polarization holography from 2.85% to 57.15% and from 0.6% to 4.07%, respectively. We also investigated the image recording and reconstruction performance for both traditional and polarization holography and the results indicate that the proposed material has noticeable potential as a holographic storage material. Additionally, it also possesses excellent potential for holographic position multiplexing recording. We conclude that laser ablation in a liquid is a promising option for processing low-cost nano-doped holographic storage material.
高性能材料在全息数据存储中起着至关重要的作用，这是一项具有潜在应用前景的技术，可用于大容量数据存储。我们报告了一种基于铝纳米粒子（Al NPs）分散的菲醌掺杂聚甲基丙烯酸甲酯（PQ/PMMA）光聚合物的新型全息存储材料。Al NPs 是在单体溶剂中使用液体中的激光烧蚀无化学前体制备的。结果表明，掺杂 Al NPs 可提高传统全息和偏振全息的衍射效率和记录灵敏度。在消融 4 小时后，新材料在传统全息和偏振全息中的衍射效率分别从 2.85%提高到 57.15%和从 0.6%提高到 4.07%。我们还研究了传统和偏振全息的图像记录和重建性能，结果表明，所提出的材料作为全息存储材料具有显著的潜力。此外，它还具有用于全息位置复用记录的优异潜力。我们得出结论，液体中的激光烧蚀是处理低成本纳米掺杂全息存储材料的一种很有前途的方法。
