Abstract
We present a method for magnetic field measurement by the weak magnetic-sensitive Zeeman splitting based on stimulated Raman transition. The magnetic field intensity measured by our proposed method is consistent with that by the magnetic-sensitive method in the error range of 0.5%. Compared with the traditional measurement, the contrast of the weak magnetic-sensitive resonance signal is improved significantly for gradient field. The dependence of the Raman transitions on polarization schemes is analyzed. The cancellation of the differential light shift between the separated peaks is demonstrated by proper choice of polarization configuration. The presented method is applicable to measuring the magnetic field with large gradient, such as 2–40 mG/mm in our clock, where the traditional method is unsuitable.
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