Low noise magneto-optical disk drive

Details Low noise magneto-optical disk drive Low noise magneto-optical disk drive

1997-04-15

1998-08-25

Dinh, Tan

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

3692754, G11B 1100

Patent

active

057989877

ABSTRACT:
A magneto-optical disk drive comprises a magneto-optical disk having a land area and a groove area both for recording data therein. The disk drive emits a laser beam having a first wavelength and including a TM wave and a TE wave. Each of slope wall width of the groove, groove or land width and groove depth has a specified value defined with respect to the first wavelength for obtaining a low noise output. The preferred width for the slope walls is above 1/4n or 1/8n to 1/6n of the first wavelength and preferred groove depth is 1/8n to 1/5n of the first wave length, wherein n is a refractive index for the laser beam.

REFERENCES:
patent: 5406546 (1995-04-01), Uchiyama et al.
patent: 5430706 (1995-07-01), Utsunomiya et al.
patent: 5504734 (1996-04-01), Morita
patent: 5517486 (1996-05-01), Haneda
patent: 5581539 (1996-12-01), Horie et al.
patent: 5602825 (1997-02-01), Sugaya et al.
patent: 5682375 (1997-10-01), Imataki
T. Iwanaga, "High Density Land/Groove Recording", Proceedings of Magneto-Optical Recording International Symposium '94, J. Magn. Soc. Jpn., vol. 19, Supplement No. S1, 1995, 1994, pp. 289-294 (No Month Available).

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