High-density read-only memory disc with super resolution reflective layer

被引：24

作者：

Kikukawa, T ^{[1
]}

Kato, T ^{[1
]}

Shingai, H ^{[1
]}

Utsunomiya, H ^{[1
]}

机构：

[1] TDK Corp, Data Storage Technol Ctr, TDK Chikumagawa, Tech Ctr 1, Nagano 3850009, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 2001年 / 40卷 / 3B期

关键词：

optical ROM disc; super resolution readout; reflective layer;

D O I：

10.1143/JJAP.40.1624

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report that super-resolutional readout occurred in read-only memory (ROM) discs with very simple materials and structure. By adopting a 15-nm-thick layer of Ge, Si, Mo, and W as a reflective layer, a carrier-to-noise ratio over 40dB could be obtained from small pits which were below the resolution limit of our optical system. Experimental and thermal simulation results showed that the super resolutional readout phenomenon in the discs is strongly correlated to the film temperatures that are reached when a laser spot is irradiated on the films. Signal characterizations suggest that the super resolutional readout mechanism of the discs is different from those of conventional ROM and conventional super-resolutional ROM discs. We have named them "Super-ROM" discs.

引用

页码：1624 / 1628

页数：5

共 9 条

[1] Read-out signal simulation of an optical disk having an oxide super-resolution film [J].

Ariyoshi, T ;

Shimano, T ;

Shintani, T ;

Terao, M .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 2000, 39 (7A) :4013-4017

[2] OPTICAL STORAGE READ-OUT OF NONLINEAR DISKS [J].

BOUWHUIS, G ;

SPRUIT, JHM .

APPLIED OPTICS, 1990, 29 (26) :3766-3768

[3] Super-resolution rewritable optical disk having a mask layer composed of thermo-chromic organic dye [J].

Hatakeyama, M ;

Ando, T ;

Tsujita, K ;

Oishi, K ;

Ueno, I .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 2000, 39 (2B) :752-755

[4] Large capacity and high-data-rate phase-change disks [J].

Kasami, Y ;

Kuroda, Y ;

Seo, K ;

Kawakubo, O ;

Takagawa, S ;

Ono, M ;

Yamada, M .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2000, 39 (2B) :756-761

[5] Effects of aperture wall on the readout signal of erasable thermal phase change super resolution (EPSR) disks [J].

Liu, JR ;

Lu, YS ;

Tien, CH ;

Tang, NY ;

Shieh, HPD .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1999, 38 (3B) :1661-1664

[6] Rewritable dual-layer phase-change optical disk [J].

Nagata, K ;

Yamada, N ;

Nishiuchi, K ;

Furukawa, S ;

Akahira, N .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1999, 38 (3B) :1679-1686

[7] A new super-resolution film applicable to read-only and rewritable optical disks [J].

Shintani, T ;

Terao, M ;

Yamamoto, H ;

Naito, T .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 1999, 38 (3B) :1656-1660

[8] High data-rate phase-change media for the digital video recording system [J].

Tieke, B ;

Dekker, M ;

Pfeffer, N ;

van Woudenberg, R ;

Zhou, GF ;

Ubbens, IPD .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 2000, 39 (2B) :762-765

[9] An approach for recording and readout beyond the diffraction limit with an Sb thin film [J].

Tominaga, J ;

Nakano, T ;

Atoda, N .

APPLIED PHYSICS LETTERS, 1998, 73 (15) :2078-2080

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