MAGNETO-OPTICAL HEAD ASSEMBLY

摘要

In a magneto-optical head assembly for a reflection type magneto-optical memory apparatus which uses a laser beam for recording, retrieving, and erasing data on a recording medium comprised of a vertical, magnetic, and anisotropic thin film, the light beam emitted from the head assembly is guided to a fixed position on the recording medium in response to a control signal received by light detection apparatus and a separate light detection apparatus is provided for receiving a data signal. A beam splitter is positioned in the optical system through which the laser beam passes. A multilayer thin film dielectric material capable of increasing the Kerr rotation angle of the laser beam reflected from the recording medium may be applied to the beam splitter.