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Proceedings Paper

40 dB Overwrite-Modulation Phase-Change Optical Disk Using In-Sb-Te Alloy
Author(s): Yoshio Sato; Yoshihito Maeda; Hisashi Andoh; Isao Ikuta; Masaichi Nagai; Nobuyoshi Tsuboi; Hiroyuki Minemura; Masaji Ishigaki
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Paper Abstract

A single-beam overwrite was achieved by an In-Sb-Te phase-change optical disk. The carrier to noise (C/N) ratio of more than 50 dB and the overwrite modulation of -40 dB were obtained for overwriting frequencies of 2 MHz and 3 MHz using a low power laser diode of 30 The high C/N ratio and the excellent overwrite modulation were due to the large reflectivity difference between the written and erased phases and the use of suitable write/erase power.

Paper Details

Date Published: 19 May 1989
PDF: 4 pages
Proc. SPIE 1078, Optical Data Storage Topical Meeting, (19 May 1989); doi: 10.1117/12.952737
Show Author Affiliations
Yoshio Sato, Hitachi, Ltd. (Japan)
Yoshihito Maeda, Hitachi, Ltd. (Japan)
Hisashi Andoh, Hitachi, Ltd. (Japan)
Isao Ikuta, Hitachi, Ltd. (Japan)
Masaichi Nagai, Hitachi, Ltd. (Japan)
Nobuyoshi Tsuboi, Hitachi, Ltd. (Japan)
Hiroyuki Minemura, Hitachi, Ltd. (Japan)
Masaji Ishigaki, Hitachi, Ltd. (Japan)

Published in SPIE Proceedings Vol. 1078:
Optical Data Storage Topical Meeting
Gordon R. Knight; Clark N. Kurtz, Editor(s)

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