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Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

Ultra-High Density Optical Memory by Photochemical Hole Burning (PHB) and Multi-Layered PHB System

Motomu Yoshimura, Tetsuya Nishimura, Noriaki Tsukada

Published May 19, 1989• 4 citations
Publisher

Abstract

We have shown a possibility to store data at more than 600x10 8 bits/cm 2, by forming a double-layered PHB system. This memory density is the highest one reported so far.
DOI
10.1117/12.952777

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For the last few years, there has been considerable research activity at the IBM San Jose Research Laboratory devoted to frequency domain optical memories based upon photochemical hole burning (PHB). The PHB phenomenon allows optical frequency to be utilized as an additional dimension for the organization of optical memories1 and offers the potential of achieving a 103 gain in achievable storage density over conventional optical memories and a factor of 3 × 104 gain over inductive magnetic recording.