Abstract
In this work, a scalar Cs magnetometer based on amplitude modulated nonlinear magneto-optical rotation (AM NMOR) is demonstrated and has reached 0.23 pT/√{Hz} at 1 Hz from 10000 nT to 60000 nT. Besides, a scalar potassium magnetometer is experimentally built with totally separated magnetic resonance signals in larger geomagnetic field, where the performance of Cs magnetometer is limited by nonlinear Zeeman effect.
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