All-Optical Vector Atomic Magnetometer
All-Optical Vector Atomic Magnetometer
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DOI：
10.1103/physrevlett.113.013001
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发表时间：
2014-07-01
影响因子：
8.6
通讯作者：
Budker, D.
中科院分区：
文献类型：
--
作者：
Patton, B.;Zhivun, E.;Budker, D.
我们展示了一个全光磁强计能够测量的大小和方向的磁场使用非线性磁光旋转铯蒸汽。矢量能力通过沿沿着正交轴的场的有效调制和磁共振频率的随后解调来增加。这种调制是由圆偏振激光束引起的交流斯塔克位移提供的。该传感器表现出一个演示的均方根噪声基底类似于65 fT/根Hz的测量场的大小和0.5 mrad/根Hz的磁场方向;消除技术噪声将提高这些灵敏度为12 fT/根Hz和10 μ rad/根Hz，分别。这种全光矢量磁强计的应用将包括磁敏感的基础物理实验，如寻找中子的永久电偶极矩。
We demonstrate an all-optical magnetometer capable of measuring the magnitude and direction of a magnetic field using nonlinear magneto-optical rotation in cesium vapor. Vector capability is added by effective modulation of the field along orthogonal axes and subsequent demodulation of the magnetic-resonance frequency. This modulation is provided by the ac Stark shift induced by circularly polarized laser beams. The sensor exhibits a demonstrated rms noise floor of similar to 65 fT/root Hz in measurement of the field magnitude and 0.5 mrad/root Hz in the field direction; elimination of technical noise would improve these sensitivities to 12 fT/root Hz and 10 mu rad/root Hz, respectively. Applications for this all-optical vector magnetometer would include magnetically sensitive fundamental physics experiments, such as the search for a permanent electric dipole moment of the neutron.