10 January 2002 50-mm CAD-MSR disk system with blue laser
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Proceedings Volume 4342, Optical Data Storage 2001; (2002) https://doi.org/10.1117/12.453375
Event: Optical Data Storage, 2001, Santa Fe, NM, United States
Abstract
A mobile magneto-optical disk system with 2 Gbytes user- capacity is proposed. The disk consists of a center aperture detection type of magnetically induced super-resolution medium, a 0.5 mm thickness substrate with 50 mm in diameter, and a newly developed UV curing resin film to keep the disk tilt small even if its surrounding environmental condition changes. The optics contains a blue laser diode of a 406 nm wavelength and an objective lens with a numerical aperture of 0.6. A laser pulsed magnetic field modulation method is employed and it realizes land and groove recording with an effective track pitch of 0.40 micrometers . Practicable system margin values are confirmed at 0.146 micrometers bit density.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yoshiteru Murakami, Yoshiteru Murakami, T. Numata, T. Numata, N. Ogata, N. Ogata, N. Takamori, N. Takamori, S. Maeda, S. Maeda, Akira Takahashi, Akira Takahashi, Yasuhito Tanaka, Yasuhito Tanaka, Yoshihiro Muto, Yoshihiro Muto, M. Nishida, M. Nishida, Masayoshi Kanno, Masayoshi Kanno, Ariyoshi Nakaoki, Ariyoshi Nakaoki, K. Fujiie, K. Fujiie, } "50-mm CAD-MSR disk system with blue laser", Proc. SPIE 4342, Optical Data Storage 2001, (10 January 2002); doi: 10.1117/12.453375; https://doi.org/10.1117/12.453375
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