Super-resolution rewritable optical disk having a mask layer composed of thermo-chromic organic dye

被引:15
作者
Hatakeyama, M [1 ]
Ando, T [1 ]
Tsujita, K [1 ]
Oishi, K [1 ]
Ueno, I [1 ]
机构
[1] Victor Co Japan Ltd, Technol Dev Div, Yokosuka, Kanagawa 2398550, Japan
来源
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 2000年 / 39卷 / 2B期
关键词
super-resolution; rewritable disk; phase-change; thermo-chromic; organic dye; rear aperture detection;
D O I
10.1143/JJAP.39.752
中图分类号
O59 [应用物理学];
学科分类号
摘要
Super-resolution (SR) effects of a thermo-chromic organic dye mask layer are investigated for a rewritable disk with a Ag-In-Sb-Te phase-change recording layer. Clear SR effects were recognized in both linear and radial directions in the rewritable disk, corresponding to a capacity of 10.3 GB in a 120 mm disk. A carrier-to-noise ratio over 35 dB was obtained at a short mark length of 0.2 mu m. Crescent-shaped marks, which are typically recognized in high-density magneto-optical (MO) media, were observed in the phase-change recording layer. The SR effects mainly operate on the reading process, resulting from a large non-linear transmittance change in the organic dye.
引用
收藏
页码:752 / 755
页数:4
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