Transactions of the Magnetics Society of Japan
Online ISSN : 1884-6726
Print ISSN : 1346-7948
ISSN-L : 1346-7948
DOUBLE MAMMOS: 3-DIMENSIONAL MO RECORDING
3D-MO NATIONAL PROJECT
A. Itoh, N. Ota, T. Uchiyama, H. Awano, S. Imai, O. Ishizaki, M. Tani, N. Iketani, T. Mieda, A. Takahashi, K. Uchihara, M. Nakata, K. Tezuka, K. Nakagawa, A. Tsukamoto
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Keywords: magneto-optical recording, three dimensional recording, magnetic amplifying MO system (MAMMOS), optical flying head (OFH), high numerical aperture, short wave length (405nm)
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2004 Volume 4 Issue 4-2 Pages 135-140

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Abstract

The 3D-MO (3-dimensional Magneto-Optical Recording) national project ended with a great success of achieving 100 Gb/in2 areal recording density with a new scheme of Double-MAMMOS (double recording layer MAMMOS, MAMMOS: magnetic amplifying magneto-optical recording system). A high performance write and read (W/R) tester equipped with a newly developed optical flying head (OFH), a low noise wide band photo detector IC (PDIC), and a high speed beam access system was developed. First surface (FS) MAMMOS disks for short wave length (405 nm) and high NA (0.9) optical system were also successfully developed and succeeded in a W/R test at 52 Gb/in2 areal density.

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