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

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

2012-03-05

arxiv.org/abs/1203.0859v1

Physics

Atomic Physics

4 pages, no figures

Scientific paper

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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