Magnetooptic reproducing device

Details Magnetooptic reproducing device Magnetooptic reproducing device

1982-05-26

1985-12-24

Richardson, Robert L.

Dynamic magnetic information storage or retrieval

Head

Read only detector using light for reading magnetically...

369110, 369 14, G11B 1100

Patent

active

045610320

ABSTRACT:
In a magnetooptic reproducing device wherein a light beam polarized in a predetermined direction is incident on a magnetic recording medium and signals recorded on the recording medium are optically read by the utilization of the magnetooptic effect, a polarization component of the signal light from the recording medium in a direction perpendicular to a polarization component in the predetermined direction is relatively increased as compared with the latter component, thereby enhancing the utilization efficiency of the signal light in detection and enabling detection of great S/N ratio or observation of a recorded pattern of high visibility. Also, signal recording as well as reproducing can be accomplished by one common optical system.

REFERENCES:
patent: 4409631 (1983-10-01), Matsumoto
patent: 4410277 (1983-10-01), Yamamoto et al.
MnBi Films: High-Temperature Phase Properties and Curie-Point Writing Characteristics, Journal of Applied Physics, vol. 41, No. 6, 1970.

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