Three-dimensional digital optical data storage with photorefractive crystals

Satoshi Kawata

doi:10.1117/12.326842

9 October 1998 Three-dimensional digital optical data storage with photorefractive crystals

Satoshi Kawata

Proceedings Volume 3470, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications IV; (1998) https://doi.org/10.1117/12.326842
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

To exceed the capacity limitation of optical method of data storage, we record and read digital data in 3D 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 3D data storage are discussed with current problems for commercial applications. We will show our latest result of two-photon recording in an undoped Lithium Niobate crystal. The comparison between photorefractive digital 3D memory with conventional holographic 3D memory and near-field memory is also discussed in terms of dynamic range, noise, recording density, and accessibility.

Citation Download Citation

Satoshi Kawata "Three-dimensional digital optical data storage with photorefractive crystals", Proc. SPIE 3470, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications IV, (9 October 1998); https://doi.org/10.1117/12.326842

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