Development of nanostructured collinear volume magnetic hologram material and its application to ultra high density optical information storage

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H02240
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Electronic materials/Electric materials
• Research Institution: Toyohashi University of Technology
• Principal Investigator: Lim Pang Boey 豊橋技術科学大学, 国際教育センター, 准教授 (40502597)
• Co-Investigator(Kenkyū-buntansha): 後藤 太一 豊橋技術科学大学, 工学(系)研究科(研究院), 助教 (00721507) ; 中村 雄一 豊橋技術科学大学, 工学(系)研究科(研究院), 准教授 (20345953) ; 内田 裕久 豊橋技術科学大学, 工学(系)研究科(研究院), 教授 (30271000) ; 高木 宏幸 豊橋技術科学大学, 工学(系)研究科(研究院), 准教授 (40390463) ; 井上 光輝 豊橋技術科学大学, 工学(系)研究科(研究院), 教授 (90159997)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 磁気ホログラムメモリ / 熱磁気記録 / 人口磁気格子メディア / コリニア磁気ホログラム

Outline of Final Research Achievements

We investigated the recording and reconstruction method using the collinear interferometry. We found that clear reconstructed images were obtained at a position shifted slightly from the focal point and that errorless recording and reconstruction was performed. In addition, by applying magnetic assist recording method, much clear reconstructed images were obtained, and errorless recording and reconstruction was attained even with small writing energy. As magnetic recording media for volumetric recording of magnetic holograms, we proposed multilayered media inserting heat sink layers by simulation and experiment. As a result, it was revealed that a diffraction efficiency higher than that of the conventional single layer film could be obtained, and errorless recording and reconstruction by the collinear method was possible even in the multilayered media in which the recording layers are discretely existed.

Free Research Field

ホログラムメモリ