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Proceedings Paper

Multilayer write-once media with Te-O-Pd films utilizing violet laser
Author(s): Hideki Kitaura; Kazuya Hisada; Kenji Narumi; Kenichi Nishiuchi; Noboru Yamada
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Paper Abstract

Multi-layer write-once optical disks with tellurium suboxide palladium-doped phase-change recording films were designed and adopted to read/write utilizing a violet laser. A dual- layer medium showed carrier to noise ratios (CNRs) of more than 50 dB within a laser power of 7 mW at a linear velocity of 5 m/s in each the condition of numerical aperture (NA) equals 0.65 and NA equals 0.85, which corresponds to a recording capacity of 27 GB and 45 GB on a dual-layer disk of (phi) 120 mm in diameter, respectively. Furthermore, a quadruple-layer medium showed CNRs of more than 48 dB within a laser power of 12 mW at a linear velocity of 5 m/s in the condition of NA equals 0.85, which corresponds to a recording capacity of 90 GB on a quadruple-layer disk of (phi) 120 mm.

Paper Details

Date Published: 10 January 2002
PDF: 8 pages
Proc. SPIE 4342, Optical Data Storage 2001, (10 January 2002); doi: 10.1117/12.453382
Show Author Affiliations
Hideki Kitaura, Matsushita Electric Industrial Co., Ltd. (Japan)
Kazuya Hisada, Matsushita Electric Industrial Co., Ltd. (Japan)
Kenji Narumi, Matsushita Electric Industrial Co., Ltd. (Japan)
Kenichi Nishiuchi, Matsushita Electric Industrial Co., Ltd. (Japan)
Noboru Yamada, Matsushita Electric Industrial Co., Ltd. (Japan)


Published in SPIE Proceedings Vol. 4342:
Optical Data Storage 2001

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