摘要:
A magneto-optic light deflection system that utilizes the stripe domains in a magnetic film as a diffraction grating. The angle of deflection of the light from the plane of the film is varied in two dimensions by varying the separation and orientation of the stripe domains. The wall separation is varied by varying the intensity of a DC field in the plane of the film parallel to the stripe domains, or by varying the intensity of a DC field normal to the plane of the film. The orientation of the stripe domains is varied by varying the direction of the DC field in the film plane. Hysteresis is overcome by an AC tickle field perpendicular to the stripe domains.
摘要:
A FERRIMAGNETIC IRON GARNET HAVING THE GENERAL FORMULA
(BI3-2X-YLNYCA2X)(FE2)(FE3-XVX)O12
WHERE LN IS A TRIVALENT RARE EARTH ELEMENTF AND X AN Y ARE SELECTED TO PROVIDE BOTH A LARGE FARADY ROTATION AND A THERMALLY INDUCED MAGNETIC COMPENSATION POINT. THE GARNET IS PARTICULARLY APPLICABLE TO MAGNETO-OPTICAL MEMORIES IN WHICH BOTH THE READ-IN AND READ-OUT PROCESSES ARE OPTICALLY CONTROLLED.
摘要:
Iron borate (FeBO3) evidences a magneto-optic effect of device interest over a broad frequency range including parts of the visible spectrum. Modulators and isolators, either continuous or pulsed, may be operated over this entire frequency range at room temperature.
摘要:
Ferric fluoride evidences a magneto-optic effect of device interest over a board frequency range including the major part of the visible spectrum. Modulators and isolators, either continuous or pulsed, may be operated over this entire frequency range at room temperature. Precautions to be taken to avoid flawing during growth of the material are described.
摘要:
The present invention relates to a novel magneto-optical device composed of a rare-earth chalcogenide. When such rare-earth chalcogenides are made in the form of crystals or of thin layers, they are subject to deterioration by exposure to the atmosphere. The use of a thin overlying protective layer having optical and magnetic properties compatible with the underlying rare-earth chalcogenide is highly desireable. In one example, Eu2O2 is employed as the protective layer for EuO.