Atomic magnetometer with microfabricated vapor cells based on coherent population trapping
Atomic magnetometer with microfabricated vapor cells based on coherent population trapping
复制标题
基于相干布居捕获的具有微制造蒸汽室的原子磁力计
DOI：
10.1088/1674-1056/abc2b9
复制
发表时间：
2020
影响因子：
1.7
通讯作者：
Y. Feng 冯
中科院分区：
文献类型：
--
作者：
X. Li 李;Yue 越 Shi 史;H. Xue 薛;Yong 勇 Ruan 阮;Y. Feng 冯
本文介绍了一种基于微加工汽室相干布居俘获共振的原子磁力计。通过微电子机械系统（MEMS）技术制造，电池在受控压力下填充Rb和Ne。建立了一套利用CPT效应表征微加工气室性能的实验装置。对于铷D1线，在约90 °C下测量的典型CPT线宽约为3 kHz（1.46 kHz，激光强度约为零）。实验研究了压力、温度和激光强度对CPT线宽的影响。最后完成了一个闭环原子磁力计，在1Hz带宽下灵敏度为210.5pT/Hz ~（1/2）。该工作为今后研制集成化的芯片级原子磁力仪奠定了基础。
An atomic magnetometer based on coherent population trapping (CPT) resonances in microfabricated vapor cells is demonstrated. Fabricated by the micro-electro-mechanical-system (MEMS) technology, the cells are filled with Rb and Ne at a controlled pressure. An experimental apparatus is built for characterizing properties of microfabricated vapor cells via the CPT effects. The typical CPT linewidth is measured to be about 3 kHz (1.46 kHz with approximately zero laser intensity) for the rubidium D1 line at about 90 °C. The effects of pressure, temperature and laser intensity on CPT linewidth are studied experimentally. A closed-loop atomic magnetometer is finally finished with a sensitivity of 210.5 pT/Hz1/2 at 1 Hz bandwidth. This work paves the way for developing an integrated chip-scale atomic magnetometer in the future.