Reflected Atomic Magnetometer With Single Beam

被引：5

作者：

Liu, Xuejing ^{[1
]}

Li, Yang ^{[1
]}

Wu, Xudong ^{[2
]}

Zhang, Rongfu ^{[1
]}

Chang, Min ^{[1
]}

Zhang, Xuedian ^{[1
,3
]}

机构：

[1] Univ Shanghai Sci & Technol, Sch Opt Elect & Comp Engn, Minist Educ, Key Lab Opt Technol & Instrument Med, Shanghai 200093, Peoples R China

[2] Univ Shanghai Sci & Technol, Sch Opt Elect & Comp Engn, Shanghai 200093, Peoples R China

[3] Tongji Univ, Shanghai Inst Intelligent Sci & Technol, Shanghai 200093, Peoples R China

来源：

IEEE SENSORS JOURNAL | 2022年 / 22卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Atomic measurements; Optical polarization; Sensitivity; Magnetometers; Atom optics; Atomic beams; Magnetic resonance; magnetometers; optical polarization; MAGNETOENCEPHALOGRAPHY;

D O I：

10.1109/JSEN.2021.3128944

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A reflected atomic magnetometer with single beam is described in this study. A single beam propagates forward for polarizing the atoms and backward for detecting Larmor precession after reflection. The feasibility of the system was studied theoretically and experimentally and compared with the single beam with ellipticity. In reflected scheme, high pump efficiency ensures a reduced power and more flexible operating wavelength considering the AC Stark shift, pump efficiency, and probe signal. The nonuniform optical rotation distribution along the cell was also analyzed. The wavelength of the system was optimized to 795.3 nm. The magnetic field sensitivity of the system is achieved to be 600 fT/Hz(1/2) and the experimental bandwidth was 17 Hz. The compact design enables new possibility of the atomic magnetometer for magnetoencephalography systems.

引用

页码：1238 / 1244

页数：7

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