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Proceedings Paper

15-Gbit/in2 recording on a DWDD disc using a land/groove substrate with a red laser enabled by a side-wall annealing process
Author(s): Takeshi Miki; Shinichi Kai; Yasuyuki Takeshita; Goro Fujita; Kazuhiko Fujiie; Osamu Koyama; Yasuyuki Miyaoka; Tomoyuki Hiroki; Yasushi Hozumi; Masaru Kikuchi; Tsutomu Shiratori
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Paper Abstract

We developed a side-wall-annealing technique for land/groove substrates. By applying this technique to our Domain Wall Displacement Detection (DWDD) Magneto-Optical (MO) recording stack formed on a land/groove substrate, even with an NA of 0.6 and a wavelength of 660 nm, we realized a density of 15 Gbit/in2 with a sufficiently wide recording tolerance. This density corresponds to a capacity of 4.7 GB mm disc like MiniDisc.

Paper Details

Date Published: 16 September 2003
PDF: 10 pages
Proc. SPIE 5069, Optical Data Storage 2003, (16 September 2003); doi: 10.1117/12.532516
Show Author Affiliations
Takeshi Miki, Sony Corp. (Japan)
Shinichi Kai, Sony Corp. (Japan)
Yasuyuki Takeshita, Sony Corp. (Japan)
Goro Fujita, Sony Corp. (Japan)
Kazuhiko Fujiie, Sony Corp. (Japan)
Osamu Koyama, Canon Inc. (Japan)
Yasuyuki Miyaoka, Canon Inc. (Japan)
Tomoyuki Hiroki, Canon Inc. (Japan)
Yasushi Hozumi, Canon Inc. (Japan)
Masaru Kikuchi, Canon Inc. (Japan)
Tsutomu Shiratori, Canon Inc. (Japan)


Published in SPIE Proceedings Vol. 5069:
Optical Data Storage 2003
Michael O'Neill; Naoyasu Miyagawa, Editor(s)

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