Nakamura Yuichi, Lim Pang Boey, Goto Taichi, Uchida Hironaga, Inoue Mitsuteru
Opt Express. 2019 Sep 30;27(20):27573-27579. doi: 10.1364/OE.27.027573.
Hologram memory is a strong candidate for optical storage due to its high recording density and high data transfer rate. We have studied and engineered a magnetic hologram memory medium using a stable magnetic garnet as recording material. To record a deep and clear magnetic hologram, it is important to control the heat diffusion generated during recording. Numerical simulation suggested that a multilayer structure with transparent heat-dissipation layers would be effective to address this. We fabricated a multilayer magnetic medium for a collinear magnetic hologram. This medium exhibited a diffraction efficiency as high as that of the single layered one, and errorless recording and reconstruction was achieved with the magnetic assist technique.
全息存储因其高记录密度和高数据传输速率，是光存储的有力候选方案。我们利用一种稳定的磁性石榴石作为记录材料，对磁性全息存储介质进行了研究与设计。为了记录深度清晰的磁性全息图，控制记录过程中产生的热扩散非常重要。数值模拟表明，具有透明散热层的多层结构可有效解决这一问题。我们制备了用于共线磁性全息图的多层磁性介质。该介质的衍射效率与单层介质相当，并通过磁辅助技术实现了无差错记录与重建。
