Overwrite Characteristics in Phase Change Optical Disk

1 January 1989

journal article
Published by IOP Publishing in Japanese Journal of Applied Physics

Vol. 28 (S3)
https://doi.org/10.7567/jjaps.28s3.129

Abstract

We studied overwrite characteristics in low and high erase power condition for (Sb₂Te₃–GeTe–Sb) phase change optical disk. The main results obtained so far are summarized as follows. (1) In phase change media, the residual signals don't make the phase jitter worse. This reason is that the erased area is always formed around the written mark by write power. We called this phenomenon the Self Sharpening Effect (SSE). SSE is one of the unique characteristics of the phase change media. (2) The (Sb₂Te₃–GeTe–Sb) phase change optical disk has wide erase power range that gives enough wide margin for the exchangeability.

Keywords

ERASE POWER
CHANGE OPTICAL DISK
PHASE CHANGE OPTICAL

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