OPTICAL MAGNETOMETER Russian patent published in 2022 - IPC G01R33/02 

FIELD: magnetic field measuring devices.

SUBSTANCE: invention relates to magnetic field measuring devices. An optical magnetometer is proposed, in which an active element placed at the end of an optical fiber, an electromagnet and an additional magnet are fixed motionless relative to each other in such a way that the direction of the field created by the electromagnet coincides with the direction of one of the main crystallographic axes of diamond, and the displacement field created by the additional magnet allows laser radiation to the active element to resolve five cross-relaxation resonances in the fluorescence signal, the photodetector is balanced, its inputs are optically coupled to the laser, and one is coupled through a partially transparent mirror, and the second one - through a partially transparent mirror, a dichroic mirror, a lens, an optical fiber to the active element and back through an optical fiber, a lens, a dichroic mirror and a light filter, and the output through a synchronous detector receiving a reference frequency signal from a low-frequency generator is connected to the control unit , which sets the amount of current generated by the current source, while the electromagnet is powered from the current source and the low-frequency generator.

EFFECT: simplifying the design of the optical magnetometer, increasing the accuracy of its measurements.

1 cl, 3 dwg