Apparatus for magneto-optical recording

Details Apparatus for magneto-optical recording Apparatus for magneto-optical recording

G - Physics

11

B

352/32.1, 352/33

G11B 11/10 (2006.01) G11B 11/105 (2006.01)

Patent

CA 1307048

83-410/D-652 ABSTRACT OF THE DISCLOSURE An optical mass storage device for use in data processing systems. Two or more lasers provide separate read and write laser beams having different wavelengths. The read and write laser beams can be orthogonally polarized. A polarizing beam splitter combines the read and write beams along a common optical path to an optical head. The head directs the combined beam to a magneto-optic storage medium. A read beam is reflected back by the medium to the common path through the head. A dichroic beam splitter disposed in the common path between the head and the polarizing splitter reflects the read beam to an optical detector. If more than one write laser is necessary, a second dichroic splitter can be used to combine the multiple write beams and the read beam.

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