Dual-Layer Rewritable Phase-Change Recording Media for HD DVD System

We have investigated the recording characteristics of the dual-layer phase-change recording media for a system that uses the blue-violet laser (wavelength of 405 nm), with the numerical aperture of 0.65 and light incidence on 0.6-mm-thick substrate having the land and groove format (HD DVD). In orde...

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Bibliographic Details
Published in:	Japanese Journal of Applied Physics Vol. 43; no. 7S; p. 4987
Main Authors:	Nakai, Tsukasa, Tsukamoto, Takayuki, Ashida, Sumio, Yusu, Keiichiro, Yoshida, Nobuhisa, Umezawa, Kazuyo, Ohmachi, Noritake, Morishita, Naoki, Nakamura, Naomasa, Ichihara, Katsutaro
Format:	Journal Article
Language:	English
Published:	01-07-2004
Online Access:	Get full text
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Summary:	We have investigated the recording characteristics of the dual-layer phase-change recording media for a system that uses the blue-violet laser (wavelength of 405 nm), with the numerical aperture of 0.65 and light incidence on 0.6-mm-thick substrate having the land and groove format (HD DVD). In order to achieve higher storage density for its beam spot size, a number of technologies have been incorporated into the media, such as the bismuth-substituted pseudobinary GeSbTe alloy recording film and hafnium oxide-based interface layer material. The feasibility of the user capacity of 36 GB has been successfully demonstrated.
ISSN:	0021-4922 1347-4065
DOI:	10.1143/JJAP.43.4987