Magneto-optical phase-modulating devices

Details Magneto-optical phase-modulating devices Magneto-optical phase-modulating devices

H - Electricity

01

S

345/10, 345/55

H01S 3/083 (2006.01) G01C 19/68 (2006.01) G02F 1/09 (2006.01)

Patent

CA 1174347

- 12 - Abstract Magneto-Optical Phase-modulating Device. A magneto-optical phase-modulating device comprising a magnetco-optic layer (3) forming part of an optical stack and upon which, in use, light is incident and to which is applied a magnetic field, a layer of magnetic material (6) adjacent the magneto-optic layer (32, and at least two flat, low inductance conductors (9,122 connected in series and disposed one on either side of the layer of magnetic material (6), in use the conductors (9,12) having an electric current applied thereto to provide a magnetic field in the layer of magnetic materail (6), which magnetic field is switchable between one direction and the opposite direction by reversing the current in the conductors (9, 12) and is of a strength relative to that of the magnetic field applied to the magneto-optic layer (3) such that the latter field is also switched between said one direction and the opposite direction as the field associated with the layer of magnetic material (6) is switched.

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