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Conferences > ODS > 2003 > MC > MC2

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, and Tsutomu Shiratori

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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 on a Φ64 mm disc like Mini Disc.

© 2003 Optical Society of America

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