Jpn. J. Appl. Phys. 42 (2003) pp. 778-783  |Next Article|  |Table of Contents|
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Superlarge-Capacity Optical Disk with Multilayer Structure Fabricated Using a Photopolymer Sheet

Noriyoshi Shida, Takanobu Higuchi, Keiji Suga and Tetsuya Iida

(Received August 9, 2002; accepted for publication September 22, 2002)

We have been studying a multilayer disk in order to realize a 12-cm-diameter optical disk with the recording capacity of 100 GB or more. We tried to fabricate a multilayer disk using a photopolymer sheet. We developed a new sheet, and confirmed the performance of this sheet. A single layer disk made using this sheet had a value of 5.3%, and a 25 GB capacity. Then we fabricated a dual layer disk. The thickness variations from the disk surface to each recording layer were ±0.6 µm and ±0.7 µm. These results indicated the possibility of realizing a multilayer disk for a high-numerical-aperture (high-NA) system. We will evaluate the signals reproduced from the multilayer disk in the next step.

URL: http://jjap.jsap.jp/link?JJAP/42/778/
DOI: 10.1143/JJAP.42.778

References | Citing Articles (2)

1. Y. Wada, M. Katsumura, Y. Kojima, H. Kitahara and T. Iida: Jpn. J. Appl. Phys. 40 (2001) 1653[JSAP].
2. I. Ichimura, F. Maeda, K. Osato, K. Yamamoto and Y. Kasami Iida: Jpn. J. Appl. Phys. 39 (2000) 937[JSAP].
3. N. Shida, K. Suga, T. Higuchi and T. Iida: Optical Data Storage Tech. Dig. (2000) p. 27.
4. H. Kuribayashi, S. Miyanabe, Y. Tomita, M. Ogasawara and K. Yamamoto: Magneto-Optical Recording Intl. Symp./Intl. Symp. Optical Memory Tech. Dig. (1997) p. 286.
5. S. Miyanabe, H. Kuribayashi and K. Yamamoto: Intl. Symp. Optical Memory Tech. Dig. (1998) p. 36.
6. S. Ohtaki, N. Murano, M. Ogasawara and M. Iwasaki: Jpn. J. Appl. Phys. 38 (1999) 1744[JSAP].
7. Y. Tomita, H. Nishiwaki, S. Miyanabe, H. Kuribayashi, K. Yamamoto and F. Yokogawa: Jpn. J. Appl. Phys. 40 (2001) 1716[JSAP].