Optical system in a magneto-optical memory device

Details Optical system in a magneto-optical memory device Optical system in a magneto-optical memory device

G - Physics

11

B

352/32.2

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

Patent

CA 1223349

ABSTRACT OF THE DISCLOSURE A magneto-optical memory device includes a magne- tic thin-film recording medium exhibiting magnetic anisotropy in a direction perpendicular to the main surface thereof. A semiconductor laser is employed in an optical system of the magneto-optical memory device for reproduction purposes and a polarization beam splitter is disposed in the optical system. A multi coated dielectric thin-film is deposited on the reflection surface of the polarization beam splitter in order to establish a desired relationship between the reflection of the P-polarization and the S-polarization.

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