Selective photo-oxidation induced bi-periodic plasmonic structures for high-density data storage.
Selective photo-oxidation induced bi-periodic plasmonic structures for high-density data storage.
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DOI：
10.1364/ao.56.007892
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发表时间：
2017-10
期刊：
影响因子：
1.9
通讯作者：
Xiuxiu Han;Shencheng Fu;Xintong Zhang;Shuang Lu;Shuangyan Liu;Xinnong Wang;Ruiya Ji;Xiuli Wang-Xiuli-Wan
中科院分区：
文献类型：
--
作者：
Xiuxiu Han;Shencheng Fu;Xintong Zhang;Shuang Lu;Shuangyan Liu;Xinnong Wang;Ruiya Ji;Xiuli Wang-Xiuli-Wan
稳定可控的光存储器是当前信息技术发展的需要。在这种背景下，Ag/TiO 2薄膜由于其在波长和偏振方面的光敏性，可以应用于高密度光存储而受到广泛关注。在这里，我们进行了双波长全息记录，使用403.4 nm和532 nm的激光，并获得混合微条纹的基础上选择性光溶解的Ag纳米粒子的各种尺寸的TiO 2纳米多孔膜。研究了同步和顺序复用两种记录方法。结果表明，与顺序照射相比，同时照射更容易获得光谱烧孔和复用光栅衍射的等效效率。这一结果可以用全息记录中Ag+离子扩散和迁移过程中的时间积累效应来解释。利用这一特性，在Ag/TiO 2薄膜中实现了多路全息条纹的同时记录，并获得了对比度均匀的多路全息条纹。这项工作为复杂微结构光子器件的制作提供了一种新的策略。
Stable and controllable optical memory is necessary for the development of current information technology. In this context, Ag/TiO2 films have received much attention for their photosensitivity in wavelength and polarization, which can be applied to high-density optical storage. Here, we carried out dual-wavelength holographic recording using 403.4 nm and 532 nm lasers, and obtained mixed microfringes based on selective photodissolution of Ag nanoparticles of various sizes in TiO2 nanoporous films. Two recording methods of simultaneous and sequential multiplexing were investigated. It was found that using simultaneous irradiation it is easier to obtain equivalent efficiency in both spectral hole burning and multiplexed grating diffraction, compared with the sequential one. The results can be explained by the Time-accumulation effect during Ag+ ion diffusion and migration in holographic recordings. Based on such properties, multiplexed-holographic fringes with uniform contrast were reserved by simultaneous recording in Ag/TiO2 films. This work provides a new strategy for fabrication of photonic devices with complex microstructures.