Magneto-optic transducer with enhanced signal performance

Details Magneto-optic transducer with enhanced signal performance Magneto-optic transducer with enhanced signal performance

1985-09-06

1987-03-31

Cardillo, Raymond F.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

360114, 360 59, 365121, G11B 5127, G11B 1110, G11B 712

Patent

active

046548378

ABSTRACT:
A magneto-optic transducer for providing an optical indication of variations in magnetization in a magnetic storage medium located along a predetermined path. The transducer has a thin film of magneto-optic material with an edge positionable closely adjacent the storage medium path so that the magneto-optic film is magnetized in accordance with the magnetization in the storage medium. The magneto-optic film is supported such that polarized light projected along an incident optical path, convergent with the storage medium path at an acute angle, intercepts the magneto-optic film substantially normally and is reflected back generally along the incident optical path.

REFERENCES:
patent: 3465322 (1969-09-01), Stapper, Jr.
patent: 3474431 (1966-02-01), Griffiths
patent: 3626394 (1971-12-01), Nelson et al.
patent: 3636535 (1972-01-01), Cushner et al.
patent: 3665431 (1972-05-01), Alstad et al.
patent: 3739362 (1973-06-01), Eschelbach
patent: 4228473 (1980-10-01), Himuro et al.

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