Nakamura Yuichi, Shirakashi Zen, Takagi Hiroyuki, Lim Pang Boey, Goto Taichi, Uchida Hironaga, Inoue Mitsuteru
Opt Express. 2017 Jun 26;25(13):15349-15357. doi: 10.1364/OE.25.015349.
Magnetic holographic memory is expected as a rewritable high-capacity data storage technology. To improve the reconstructed image, we investigate recording conditions by numerical simulation and experiments. We found experimentally that four diffracted beams from a digital micromirror device interfere with each other at a suitable defocus recording point, and such overlapping is favorable to obtain clear reconstruction images without diffuser. Subsequently, we modify the shape of the reference beam to ensure more effective interference. As a result, we achieve error-free image reconstruction from the magnetic hologram. Our results indicate that magnetic holograms can potentially be utilized as holographic memory.
磁全息存储器有望成为一种可重写的高容量数据存储技术。为了改善重建图像，我们通过数值模拟和实验研究了记录条件。我们通过实验发现，来自数字微镜器件的四束衍射光束在合适的离焦记录点相互干涉，这种重叠有利于在不使用散射器的情况下获得清晰的重建图像。随后，我们修改了参考光束的形状以确保更有效的干涉。结果，我们实现了从磁全息图进行无误差的图像重建。我们的结果表明，磁全息图有可能被用作全息存储器。
