40 dB Overwrite-Modulation Phase-Change Optical Disk Using In-Sb-Te Alloy

Yoshio Sato; Yoshihito Maeda; Hisashi Andoh; Isao Ikuta; Masaichi Nagai; Nobuyoshi Tsuboi; Hiroyuki Minemura; Masaji Ishigaki

doi:10.1117/12.952737

19 May 1989 40 dB Overwrite-Modulation Phase-Change Optical Disk Using In-Sb-Te Alloy

Yoshio Sato, Yoshihito Maeda, Hisashi Andoh, Isao Ikuta, Masaichi Nagai, Nobuyoshi Tsuboi, Hiroyuki Minemura, Masaji Ishigaki

Author Affiliations +

Proceedings Volume 1078, Optical Data Storage Topical Meeting; (1989) https://doi.org/10.1117/12.952737
Event: OE/LASE '89, 1989, Los Angeles, CA, United States

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.

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Yoshio Sato, Yoshihito Maeda, Hisashi Andoh, Isao Ikuta, Masaichi Nagai, Nobuyoshi Tsuboi, Hiroyuki Minemura, and Masaji Ishigaki "40 dB Overwrite-Modulation Phase-Change Optical Disk Using In-Sb-Te Alloy", Proc. SPIE 1078, Optical Data Storage Topical Meeting, (19 May 1989); https://doi.org/10.1117/12.952737

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