Atomic magnetometer with microfabricated vapor cells based on coherent population trapping

被引：6

作者：

Li, Xiaojie ^{[1
,2
,3
]}

Shi, Yue ^{[1
,2
,3
]}

Xue, Hongbo ^{[4
]}

Ruan, Yong ^{[1
,2
,3
,5
]}

Feng, Yanying ^{[1
,2
,3
]}

机构：

[1] Tsinghua Univ, State Key Lab Precis Measurement Technol & Instru, Beijing 100084, Peoples R China

[2] Tsinghua Univ, Key Lab Photon Control Technol, Minist Educ, Beijing 100084, Peoples R China

[3] Tsinghua Univ, Dept Precis Instrument, Beijing 100084, Peoples R China

[4] Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing 100190, Peoples R China

[5] MEMS Inst Zibo Natl High Tech Ind Dev Zone, Zibo 255086, Peoples R China

来源：

CHINESE PHYSICS B | 2021年 / 30卷 / 03期

基金：

中国国家自然科学基金;

关键词：

atomic magnetometer; MEMS; vapor cell; coherent population trapping; CLOCKS;

D O I：

10.1088/1674-1056/abc2b9

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 degrees 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/Hz(1/2) at 1 Hz bandwidth. This work paves the way for developing an integrated chip-scale atomic magnetometer in the future.

引用

页数：5

共 24 条

[1] High-sensitivity atomic magnetometer unaffected by spin-exchange relaxation [J].