Floating type magneto-optic disk reading head system having exte

Details Floating type magneto-optic disk reading head system having exte Floating type magneto-optic disk reading head system having exte

1989-01-11

1990-09-04

Levy, Stuart S.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

360114, 360 59, G11B 1112, G11B 1304

Patent

active

049550063

ABSTRACT:
A magneto-optic disk reading head system including an external semiconductor laser resonator. A magneto-optic disk forms a part of the external resonator. In the external resonator, orthogonal two mode oscillations are established to produce a beat signal used for reading data stored in the magneto-optic disk. The magneto-optic disk reading head system is a floating type reading head.

REFERENCES:
patent: 4305046 (1981-12-01), Le Hoch et al.
patent: 4410277 (1983-10-01), Yamamoto et al.
patent: 4571650 (1986-02-01), Ojima et al.
patent: 4637027 (1987-01-01), Shirasaki et al.
patent: 4811329 (1989-03-01), Shikama et al.
"Writable Optical Disk", Feb. 8, 1988, Nikkei Electronics 1988, 2. 8 (No. 440), pp. 115-119.
"Current Status of Development of Magneto-optic Disk", Nikkei Byte, Mar. 1985, pp. 94-98.
Ukita et al., "Readout Characteristics of a Spontaneous and Stimulated Emission Optical (SAS) Head", Isom '87, Sep. 16-18, 1987, Tokyo Japan.

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