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Conferences > ODS > 1994 > TuC > TuC6

High Density Recording Providing over 1 GB Capacity for a 90 mm Phase Change Optical Disk

Hiromichi Kobori, Hiroshi Hasegawa, Toshihiro Sugaya, Naoki Morishita, Naomasa Nakamura, and Katsumi Suzuki

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Abstract

An optical disk memory with a larger capacity and a higher data transfer rate than those of available optical disk drives is required for multimedia applications. The authors have developed a 600 MB capacity 90 mm phase change optical disk memory1) to achieve these two demands using a 690 nm laser diode, a 0.6 numerical aperture objective lens, a 0.6 mm thin substrate double–sided disk, and a fast auto laser power control technique2).

© 1994 Optical Society of America

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