FIELD: magnetic optics.
SUBSTANCE: device has polarized light source, cylindrical lens, magnetic-optical material film, polarizer, photo-detector, positioned serially along movement of light beam. film of magnetic-optical material is made with low-density anisotropy and contains transparent protective covering. Between magnetic-optical material and protective covering a layer of metal is contained in form of two stripes with space between their ends. Light polarization vector is directed in falling plane, angle of falling of light at boundary between magnetic-optical material and protective covering is equal to Bruster angle, on the boundary between protective covering and air exceeds angle of full inner deflection.
EFFECT: higher sensitivity of magnetic-optical head, possible reproduction of information at high density.
1 dwg
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