Atomic-signal-based zero field finding technique for unshielded laser-pumped atomic magnetometer

2012/03/05 by Haifeng Dong, Dong, Haifeng, Hongbo Lin +3
Physics and Astronomy · #Advanced Frequency and Time Standards #Atomic Physics (physics.atom-ph) #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #Quantum Physics (quant-ph)

paper · pdf · doi:10.48550/arxiv.1203.0859

openalex publication_date 2012/03/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We described a novel technique that can find the zero-field for unshielded laser-pumped atomic magnetometer using atomic signal itself. By comparing light density of pump beam after atomic vapor cell, it is decided which direction to move the compensation magnetic field and whether to increase or decrease the converging step length. The zero-field is found in less than 18s and the step length after converging is smaller than 10nT, 10nT and 40nT for x, y and z axes, respectively, limited by 50Hz noise in the lab environment.

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