Effect of Spatial Homogeneity of Spin Polarization on Magnetic Field Response of an Optically Pumped Atomic Magnetometer Using a Hybrid Cell of K and Rb Atoms
Effect of Spatial Homogeneity of Spin Polarization on Magnetic Field Response of an Optically Pumped Atomic Magnetometer Using a Hybrid Cell of K and Rb Atoms
复制标题
DOI：
10.1109/tmag.2012.2199966
复制
发表时间：
2012-11-01
影响因子：
2.1
通讯作者：
Kobayashi, Tetsuo
中科院分区：
文献类型：
--
作者：
Ito, Yosuke;Ohnishi, Hiroyuki;Kobayashi, Tetsuo
我们测量了自旋极化的空间均匀性，这是直接关系到的灵敏度和磁线宽的光泵原子磁力计与混合细胞的K和Rb原子。这是通过改变探测光束的位置来完成的。此外，为了比较，我们还测量了单K和单Rb原子磁力计的灵敏度和磁力线宽度，发现光学厚原子在混合池中均匀自旋极化。光学薄的碱金属蒸气可以均匀地自旋极化，并且自旋极化转移到光学厚的碱金属蒸气。实验结果表明，采用这种混合池的原子磁力仪可以更有效地实现不同位置的信号同时测量，同时具有均匀的灵敏度和磁线宽。
We measured the spatial homogeneity of spin polarization, which is directly related to the sensitivity and magnetic linewidth of an optically pumped atomic magnetometer with a hybrid cell of K and Rb atoms. This was done by changing the position of the probe beam. Furthermore, for comparison, we also measured the sensitivity and magnetic linewidth of atomic magnetometers with single K and single Rb cells, and found that optically thick atoms were spin polarized homogeneously with the hybrid cell. Optically thin alkali metal vapor can be spin polarized homogeneously, and the spin polarization transfers to an optically thick alkali metal vapor. An atomic magnetometer with the hybrid cell was found to be more effective in realizing simultaneous signal measurements at different locations with the uniform sensitivity and magnetic linewidth.