A dual-axis, high-sensitivity atomic magnetometer<xref rid="cpb_26_12_120702_fn1" ref-type="fn">*</xref> <fn id="cpb_26_12_120702_fn1"> <label>*</label> <p>Project supported by the National Natural Science Foundation of China (Grant Nos. 61227902, 61673041, and 61374210), the National Key R & D Program of China (Grant No. 2016YFB0501601), and the Academic Excellence Foundation of Beihang University (BUAA) for PhD Students.</p> </fn>

A dual-axis, high-sensitivity atomic magnetometer* *

Project supported by the National Natural Science Foundation of China (Grant Nos. 61227902, 61673041, and 61374210), the National Key R & D Program of China (Grant No. 2016YFB0501601), and the Academic Excellence Foundation of Beihang University (BUAA) for PhD Students.

Li Rujie^†, Quan Wei^‡, Fan Wenfeng, Xing Li, Wang Zhuo, Zhai Yueyang, Fang Jiancheng

(color online) Sensitivity of the dual-axis AM and noise of the probe beams. Both Ch1 (blue line) and Ch2 (red dashed line) AMs feature a magnetic field sensitivity of 20 fT/Hz^1/2. By turning off the pump beam and the oscillation fields, we obtain the spectrums of the probe beams (black line for Ch1 and green dashed line for Ch2), which give a noise floor of about 6 fT/Hz^1/2.