Magnetic amplifying magneto-optical system (MAMMOS) for ultrahigh-density MO recording

Hiroyuki Awano; Satoru Ohnuki; Hiroshi Shirai; Norio Ota; Atushi Yamaguchi; Satoshi Sumi; Kenji Torazawa

doi:10.1117/12.280702

30 July 1997 Magnetic amplifying magneto-optical system (MAMMOS) for ultrahigh-density MO recording

Hiroyuki Awano, Satoru Ohnuki, Hiroshi Shirai, Norio Ota, Atushi Yamaguchi, Satoshi Sumi, Kenji Torazawa

Proceedings Volume 3109, Optical Data Storage 1997 Topical Meeting; (1997) https://doi.org/10.1117/12.280702
Event: Optical Data Storage Topical Meeting '97, 1997, Tucson, AZ, United States

Abstract

A readout method to amplify the MO signal by using a magnetic domain expansion phenomenon have been proposed. It was found that the small MO signal reproduced from 0.08 micrometers crescent shaped domain was amplified 5 times larger than that of conventional disk without readout field. Also the reproduced signal level reaches to about 70% of the saturated signal amplitude. The result corresponds to 20 Gbit/in² areal density with conventional 680 nm laser.

Citation Download Citation

Hiroyuki Awano, Satoru Ohnuki, Hiroshi Shirai, Norio Ota, Atushi Yamaguchi, Satoshi Sumi, and Kenji Torazawa "Magnetic amplifying magneto-optical system (MAMMOS) for ultrahigh-density MO recording", Proc. SPIE 3109, Optical Data Storage 1997 Topical Meeting, (30 July 1997); https://doi.org/10.1117/12.280702

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