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Proceedings Paper

High-SNR single-wavelength readout for quadri-valued MO recording by detecting both magneto-optical rotation angle and ellipticity
Author(s): Katsuji Nakagawa; Akiyoshi Itoh
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Paper Abstract

A new high SNR readout method for quadri-valued MO recoding by detecting both MO rotation angle (theta) and ellipticity (eta) with only single wavelength is proposed. This advanced method is demonstrated by using a double-layered MO disk and green laser. Each layer of the double layered MO disk is independently read by an optical head for detecting (theta) and (eta) at 514.5 nm in wavelength.

Paper Details

Date Published: 18 September 2000
PDF: 5 pages
Proc. SPIE 4090, Optical Data Storage 2000, (18 September 2000); doi: 10.1117/12.399342
Show Author Affiliations
Katsuji Nakagawa, Nihon Univ. (Japan)
Akiyoshi Itoh, Nihon Univ. (Japan)


Published in SPIE Proceedings Vol. 4090:
Optical Data Storage 2000
Douglas G. Stinson; Ryuichi Katayama, Editor(s)

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