Three-dimensional digital optical data-storage with photorefractive crystals

被引：4

作者：

Kawata, S ^{[1
]}

机构：

[1] Osaka Univ, Dept Appl Phys, Suita, Osaka 565, Japan

来源：

PHOTOREFRACTIVE FIBER AND CRYSTAL DEVICES: MATERIALS, OPTICAL PROPERTIES, AND APPLICATIONS IV | 1998年 / 3470卷

关键词：

optical data storage; two-photon absorption; photo-refractives; bit-oriented three-dimensional memory; three-dimensional optics;

D O I：

10.1117/12.326842

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

To exceed the capacity limitation of optical method of data storage, we record and read digital data in three dimensions in a photorefractive material which is photosensitive for recording and refractile in reading. Optical systems, including a confocal laser-scanning system and a two-photon laser-scanning system, and photorefractive materials suitable for three-dimensional data storage are discussed with current problems for commercial applications. We will show our latest results of two-photon recording in an undoped Lithium Niobate crystal. The comparison between photorefractive digital three-dimensional memory with conventional holographic three-dimensional memory and near-field memory is also discussed in terms of dynamic range, noise, recording density, and accessibility.

引用

页码：56 / 63

页数：8