THREE-COMPONENT OPTICAL QUANTUM MAGNETOMETER ON NITROGEN-VACANCY COLOUR CENTRES IN DIAMOND CRYSTAL Russian patent published in 2025 - IPC G01R33/26 

FIELD: measuring.

SUBSTANCE: invention relates to magnetic field measurement. Essence of the invention consists in the fact that a three-component optical quantum magnetometer on nitrogen-vacancy colour centres in a diamond crystal comprises an optical system for collecting fluorescent radiation of NV centres in a diamond, magnetic field generation device, made in the form of a solenoid, two transverse Helmholtz coils, three controlled current generators supplied to the solenoid and transverse Helmholtz coils, microwave radiation source, made in the form of two controlled microwave radiation generators, connected through a mixer with a microwave inductor, wherein the main axis of sensitivity of the magnetometer is one of the four possible orientations of the NV centres in the diamond, with which the axis of the solenoid coincides, the axis of the transverse Helmholtz coils, an optical axis of the optical pumping radiation input device and an optical axis of a system for collecting and filtering fluorescent radiation of NV-centres in diamond.

EFFECT: high accuracy of measuring the value and direction of the magnetic field while maintaining small dimensions of the sensor.

5 cl, 4 dwg