15-Gbit/in2 recording on a DWDD disc using a land/groove substrate with a red laser enabled by a side-wall annealing process

Takeshi Miki; Shinichi Kai; Yasuyuki Takeshita; Goro Fujita; Kazuhiko Fujiie; Osamu Koyama; Yasuyuki Miyaoka; Tomoyuki Hiroki; Yasushi Hozumi; Masaru Kikuchi; Tsutomu Shiratori

doi:10.1117/12.532516

16 September 2003 15-Gbit/in² recording on a DWDD disc using a land/groove substrate with a red laser enabled by a side-wall annealing process

Takeshi Miki, Shinichi Kai, Yasuyuki Takeshita, Goro Fujita, Kazuhiko Fujiie, Osamu Koyama, Yasuyuki Miyaoka, Tomoyuki Hiroki, Yasushi Hozumi, Masaru Kikuchi, Tsutomu Shiratori

Author Affiliations +

Proceedings Volume 5069, Optical Data Storage 2003; (2003) https://doi.org/10.1117/12.532516
Event: Optical Data Storage 2003, 2003, Vancouver, Canada

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.

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Takeshi Miki, Shinichi Kai, Yasuyuki Takeshita, Goro Fujita, Kazuhiko Fujiie, Osamu Koyama, Yasuyuki Miyaoka, Tomoyuki Hiroki, Yasushi Hozumi, Masaru Kikuchi, and Tsutomu Shiratori "15-Gbit/in² recording on a DWDD disc using a land/groove substrate with a red laser enabled by a side-wall annealing process", Proc. SPIE 5069, Optical Data Storage 2003, (16 September 2003); https://doi.org/10.1117/12.532516

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