Coherent parallel copying of holograms recorded by spatial spread-spectrum multiplexing

被引：0

作者：

Ito, Terumasa ^{[1
]}

Okamoto, Atsushi ^{[1
]}

机构：

[1] Hokkaido Univ, Grad Sch Informat Sci & Technol, Kita Ku, Sapporo, Hokkaido 0600814, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 2007年 / 46卷 / 6B期

关键词：

holographic recording; holographic ROM; multiplexing; spatial spread-spectrum multiplexing; coherent parallel; copying; diffraction efficiency enhancement;

D O I：

10.1143/JJAP.46.3816

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this paper, we propose a new parallel hologram copying system in which multiplexed holograms are coherently copied from a master medium to a copy medium. The diffraction efficiency in spatial spread-spectrum multiplexing, which is a type of phase multiplexing based on phase modulation onto signals, can be significantly enhanced by coherent parallel copying. We theoretically and experimentally showed that the diffraction efficiency of M multiplexed holograms can be increased up to 1/M of that of a single hologram, which is an improvement by a factor of M compared with the 1/M-2 formula in conventional multiplexing systems.

引用

页码：3816 / 3821

页数：6

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