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Proceedings Paper

New concept of phase-change optical recording free from the initialization process
Author(s): Shuichiro Ogawa; Keigo Takeguchi; Isao Morimoto
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Paper Abstract

In general, phase change media have to be initialized prior to recording. Initialization for phase change optical disks involves crystallization of as-deposited amorphous recording films. An initialization-free technology will lead to a low production cost, which is very important for commercializing phase change optical disks. A five-layered phase change optical disk, which has a thin metal layer between the substrate and the lower dielectric layer, has a good overwriting jitter at high linear velocity. We propose to use the higher reflective amorphous state of a five-layered phase change optical disk as the prerecording state without initialization. Our proposed new concept of phase change optical recording has some advantages, such as initialization- free, large signal amplitude of a header field, servo stability and high performance of overwriting jitter. Our proposed disk shows the performance to the 2.6 GBytes digital video disk-random access memory (DVD-RAM) disk.

Paper Details

Date Published: 23 October 1998
PDF: 9 pages
Proc. SPIE 3401, Optical Data Storage '98, (23 October 1998); doi: 10.1117/12.327947
Show Author Affiliations
Shuichiro Ogawa, Asahi Chemical Industry Co., Ltd. (Japan)
Keigo Takeguchi, Asahi Chemical Industry Co., Ltd. (Japan)
Isao Morimoto, Asahi Chemical Industry Co., Ltd. (Japan)


Published in SPIE Proceedings Vol. 3401:
Optical Data Storage '98
Shigeo R. Kubota; Tomas D. Milster; Paul J. Wehrenberg, Editor(s)

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