Multiplexing Method with Noncoaxial Spherical Waves for Holographic Data Storage
Multiplexing Method with Noncoaxial Spherical Waves for Holographic Data Storage
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用于全息数据存储的非同轴球面波复用方法
DOI：
10.1143/jjap.46.3787
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发表时间：
2007
影响因子：
1.5
通讯作者：
Y. Kurata
中科院分区：
文献类型：
--
作者：
Yukiko Nagasaka;Kuniaki Okada;A. Nakamura;Masaki Tanaka;A. Kuwahara;Y. Kurata
全息数据存储容量与光聚合物记录介质的厚度成比例。为了最大限度地利用光聚合物记录介质的性能，需要能够在这种介质的厚度方向上记录全息图的复用技术。为此，我们提出了一种新的多路复用方法，结合移位，旋光，和焦移多路复用，并成功地记录在介质的厚度方向上的全息图，通过控制参考光束的入射角。我们确认，记录的全息图在介质的厚度方向上是空间分离的，并且可以记录多达50个全息图。
Holographic data storage capacity is proportional to the thickness of a photopolymer recording medium. To maximize the use of the performance of a photopolymer recording medium, a multiplexing technique that can record holograms in the thickness direction of such a medium is demanded. To this end, we propose a new multiplexing method that combines shift, peristrophic, and focus-shift multiplexings, and successfully records holograms in the thickness direction of the medium by controlling the incidence angle of the reference beams. We confirm that the holograms recorded are well spatially separated in the thickness direction of the medium, and that up to 50 holograms can be recorded.