Unshielded three-axis vector operation of a spin-exchange-relaxation-free atomic magnetometer
Unshielded three-axis vector operation of a spin-exchange-relaxation-free atomic magnetometer
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DOI：
10.1063/1.1814434
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发表时间：
2004-11-15
影响因子：
4
通讯作者：
Romalis, MV
中科院分区：
文献类型：
--
作者：
Seltzer, SJ;Romalis, MV
我们描述了一种矢量碱金属磁强计，它同时独立地测量磁场的所有三个分量。使用反馈系统，磁力计位置的总场被保持在接近零的位置，抑制了由于自旋交换碰撞引起的展宽。与仅部分抑制自旋交换弛豫的两种不同标量工作模式相比，磁强计的共振线宽和信号强度是有利的。在没有磁屏蔽的实验室环境中，展示了1pT/根赫兹数量级的磁场灵敏度。(C)2004年美国物理研究所。
We describe a vector alkali-metal magnetometer that simultaneously and independently measures all three components of the magnetic field. Using a feedback system, the total field at the location of the magnetometer is kept near zero, suppressing the broadening due to spin-exchange collisions. The resonance linewidth and signal strength of the magnetometer compare favorably with two different scalar operation modes in which spin-exchange relaxation is only partially suppressed. Magnetic field sensitivity on the order of 1 pT/rootHz is demonstrated in a laboratory environment without magnetic shields. (C) 2004 American Institute of Physics.