15 Gbit/inch/sup 2/ areal density optical disk using the DWDD medium with blue LD recording

Author

Sakamoto, T. ; Fujita, G. ; Takemoto, Y. ; Akiyama, Y. ; Imanishi, S. ; Aratani, K. ; Kanno, M. ; Nakaoki, A.

Author_Institution

Home Network Co., Sony Corp., Tokyo, Japan

fYear

2000

fDate

14-17 May 2000

Firstpage

89

Lastpage

91

Abstract

We developed a new layer structure of domain wall displacement detection (DWDD) optimized for a blue laser diode (LD) and confirmed that acceptable characteristics could be obtained. We tested readout and recording with a blue LD on this DWDD disk and confirmed that the jitter did not exceed 15% for bit lengths longer than 0.125 /spl mu/m at the track pitch of 0.35 /spl mu/m. In consideration of the experimental results, we could confirm that a DWDD disk with blue LD readout and recording could be available with an areal density of 15 Gbit/inch/sup 2/ with a jitter criterion of 15%.

Keywords

Kerr magneto-optical effect; domain boundaries; magneto-optical recording; optical disc storage; optimisation; semiconductor lasers; 406 nm; DWDD medium; areal density; areal density optical disk; blue LD readout; blue LD recording; blue laser diode; domain wall displacement detection; jitter criterion; layer structure; track pitch; Diode lasers; Disk recording; Heat treatment; Laser beams; Lenses; Optical recording; Temperature control; Temperature distribution; Thermal degradation; Thermal lensing;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical Data Storage, 2000. Conference Digest

Conference_Location

Whisler, BC, Canada

Print_ISBN

0-7803-5950-X

Type

conf

DOI

10.1109/ODS.2000.847990

Filename

847990