2023
DOI: 10.1063/5.0159751
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Characterizing current noise of commercial constant-current sources by using an optically pumped rubidium atomic magnetometer

Ni Zhao,
Lulu Zhang,
Yongbiao Yang
et al.

Abstract: This paper introduces a method for characterizing the current noise of commercial constant-current sources (CCSs) using a free-induction-decay (FID) type optically pumped rubidium atomic magnetometer driven by a radio frequency magnetic field. We convert the sensitivity of the atomic magnetometer into the current noise of CCS by calibrating the coil constant. At the same time, the current noise characteristics of six typical commercial low-noise CCSs are compared. The current noise level of the Keysight model … Show more

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