Magneto-optical readout apparatus

Details Magneto-optical readout apparatus Magneto-optical readout apparatus

1974-09-11

1976-03-30

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Read only detector using light for reading magnetically...

340174YC, 350151, G11B 532, G02B 523, G02F 109, G11C 1102

Patent

active

039478904

ABSTRACT:
A method and apparatus are disclosed for retrieving magnetically recorded information by optical means. The magnetic recording is irradiated by a beam of coherent light whose plane of polarization is periodically varied. The light which is transmitted or reflected from the recording medium is analyzed in order to retrieve the magnetically recorded information.

REFERENCES:
patent: 3268879 (1966-08-01), Lins
patent: 3491351 (1970-01-01), Smaller et al.
patent: 3775570 (1973-11-01), Lewicki et al.

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