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Proceedings Paper

Ultrahigh-density recording using overwritable phase-change optical disk
Author(s): Isao Morimoto; Kazuyuki Furuya; Kazuhiro Nishimura; Masaru Suzuki; Masafumi Nakao
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Paper Abstract

The possibility of ultrahigh density recording has been shown using an overwritable phase change optical disk with a Ge-Te-Sb recording film. It was found that recording marks of 0.2 micrometers length can be formed stably and that high contrast ratio can be obtained in the wide range of wavelength. From these results, about six times as high linear density as the existing format is possible by using mark-edge recording or MCAV method. It was also found that the crosstalk of PCE optical disk is so small that double track density recording is possible by track pitch reduction or groove/land recording. These results show a possibility of large capacity of 10 GB for 5.25 inch diameter disk.

Paper Details

Date Published: 13 August 1992
PDF: 11 pages
Proc. SPIE 1663, Optical Data Storage, (13 August 1992); doi: 10.1117/12.137554
Show Author Affiliations
Isao Morimoto, Asahi Chemical Industry Co., Ltd. (Japan)
Kazuyuki Furuya, Asahi Chemical Industry Co., Ltd. (Japan)
Kazuhiro Nishimura, Asahi Chemical Industry Co., Ltd. (Japan)
Masaru Suzuki, Asahi Chemical Industry Co., Ltd. (Japan)
Masafumi Nakao, Asahi Chemical Industry Co., Ltd. (Japan)

Published in SPIE Proceedings Vol. 1663:
Optical Data Storage
Donald B. Carlin; David B. Kay; Alfred A. Franken, Editor(s)

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