一种具有抑制自旋交换展宽的光调制零场原子磁力仪。

An optically modulated zero-field atomic magnetometer with suppressed spin-exchange broadening.

作者信息

Jiménez-Martínez R, Knappe S, Kitching J

机构信息

Time and Frequency Division, National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.

出版信息

Rev Sci Instrum. 2014 Apr;85(4):045124. doi: 10.1063/1.4872075.

DOI:10.1063/1.4872075

PMID:24784676

Abstract

We demonstrate an optically pumped (87)Rb magnetometer in a microfabricated vapor cell based on a zero-field dispersive resonance generated by optical modulation of the (87)Rb ground state energy levels. The magnetometer is operated in the spin-exchange relaxation-free regime where high magnetic field sensitivities can be achieved. This device can be useful in applications requiring array-based magnetometers where radio frequency magnetic fields can induce cross-talk among adjacent sensors or affect the source of the magnetic field being measured.

摘要

我们展示了一种基于对（87）Rb基态能级进行光调制产生的零场色散共振的微纳加工蒸汽室中的光泵浦（87）Rb磁力计。该磁力计在自旋交换无弛豫状态下运行，可实现高磁场灵敏度。该装置在需要基于阵列的磁力计的应用中可能有用，在这些应用中，射频磁场会在相邻传感器之间引起串扰或影响被测量的磁场源。