High-sensitivity overwritable phase-change optical disk for PD systems

Takeo Ohta; Kazumi Yoshioka; Hidemi Isomura; Tetsuya Akiyama; Ryoichi Imanaka

doi:10.1117/12.218723

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8 September 1995 High-sensitivity overwritable phase-change optical disk for PD systems

Takeo Ohta; Kazumi Yoshioka; Hidemi Isomura; Tetsuya Akiyama; Ryoichi Imanaka

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Proceedings Volume 2514, Optical Data Storage '95; (1995) https://doi.org/10.1117/12.218723
Event: Optical Data Storage '95, 1995, San Diego, CA, United States

Abstract

Phase-change optical disks where the cooling rate has been reduced by design show about double the sensitivity of conventional disks and are capable of more than 500,000 overwrites. The disk layer materials are the same as for conventional phase-change disks. The disk diameter is 120 mm and the capacity 9is 650 MB single sided, the same capacity as a conventional CD-ROM. The new 'PD' concept drive has a simple optical unit and supports both 4X data rate CD-ROMs and the new phase-change overwritable disks.

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Takeo Ohta, Kazumi Yoshioka, Hidemi Isomura, Tetsuya Akiyama, and Ryoichi Imanaka "High-sensitivity overwritable phase-change optical disk for PD systems", Proc. SPIE 2514, Optical Data Storage '95, (8 September 1995); https://doi.org/10.1117/12.218723