Electricity: measuring and testing – Magnetic – Magnetometers
Patent
1985-01-24
1987-09-29
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Magnetic
Magnetometers
350375, G01R 3302, G02B 530, G02F 129, G02F 131
Patent
active
046971459
ABSTRACT:
A process and apparatus for measuring a magnetic field based on the Faraday effect rotation of a light beam passing through a ferrimagnetic coating subject to a magnetic field to be measured is shown. The magnetization direction within the ferrimagnetic coating is coherently oriented by applying a high amplitude alternating magnetic field oriented in accordance with the axis of the light beam. This is followed by a progressive reduction of the amplitude of this magnetic field and the magnetic field to be measured is compensated. A system and a measuring cell making it possible to perform said process is also shown.
Doriath Gerard
Hartemann Pierre
Jacobelli Alain
"Thomson-CSF"
Eisenzopf Reinhard J.
Snow Walter E.
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