FIELD: magnetometry.;SUBSTANCE: essence of the invention lies in the fact that the device for recording a magnetic field contains a polarizing element made linear, between the polarizing element and the cell with atomic magnetic dipoles on one optical axis is a focusing lens, between the cell and the photodetector made in the form of a balanced photodiode, there is a polarization divider and a refocusing lens, and a radio frequency spectrum analyzer with digital mathematical processing is used as a measuring device. ;EFFECT: technical result is increase in accuracy and information content of measuring the magnetic field, and decrease in the size of the device.;1 cl, 3 ex, 6 dwg
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