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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >High bandwidth three-axis magnetometer based on optically polarized Rb-85 under unshielded environment
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High bandwidth three-axis magnetometer based on optically polarized Rb-85 under unshielded environment

机译：基于光学偏振RB-85的高带宽三轴磁力计在非屏蔽环境下

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摘要

In this paper, we demonstrate a three-axis atomic magnetometer based on parametric oscillations, which can measure the three magnetic field components simultaneously and independently. A circularly polarized pump beam is applied to create the spin polarization, and another linearly polarized probe beam is used to detect the dynamics of the polarized spin under a magnetic field. With a closed-loop system to keep the magnetic field in resonance with the atoms, three components of magnetic field are measured by their feedback signals. We achieve a magnetometer sensitivity of 6 pT (root Hz)(-1), 25 pT (root Hz)(-1), and 60 pT (root Hz)(-1) along three axes in the frequency range from 100 Hz to 1 kHz with a bandwidth better than 1 kHz under an unshielded environment. Furthermore, this magnetometer is free of optical modulation, which reduces the complexity of experimental setups. The methods we present here provide a prototype all-electrical three-axis atomic magnetometer.
机译：在本文中，我们展示了基于参数振荡的三轴原子磁力计，其可以同时且独立地测量三个磁场分量。 施加圆偏振泵梁以产生自旋极化，并且另一个线性偏振探针光束用于检测磁场下偏振旋转的动态。 利用闭环系统以使磁场以原子保持谐振，通过反馈信号测量磁场的三个部件。 我们沿着从100Hz到100Hz到的频率范围内的三个轴实现6pt（根Hz）（ - 1），25pt（Root Hz）（ - 1）和60pt（根Hz）（ - 1）的磁力计敏感性。 在非屏蔽环境下，1 kHz带宽优于1 kHz。 此外，该磁力计没有光学调制，这降低了实验设置的复杂性。 我们在此提供的方法提供了一种原型全电动三轴原子磁力计。

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