A laser pump-re-pump atomic magnetometer

We demonstrate experimentally an atomic magnetometer based on optical pumping theory, a magnetic resonance that is induced by a radio frequency field and dependent on the magnetic field strength. Compared with the conventional method using one radiation field, which is used not only as the probe bea...

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Bibliographic Details
Published in:Chinese physics B 2013-12, Vol.22 (12), p.177-181
Main Author: 杨爱林 杨国卿 蔡勋明 徐云飞 林强
Format: Article
Language:English
Subjects:
Amplitudes
Beams (radiation)
Lasers
Magnetic fields
Magnetic resonance
Mathematical analysis
Optical pumping
Pumps
Trapping
传统方法
光泵浦
原子群
泵浦光束
激光功率
磁力仪
磁场强度
谐振信号
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Description
Summary:We demonstrate experimentally an atomic magnetometer based on optical pumping theory, a magnetic resonance that is induced by a radio frequency field and dependent on the magnetic field strength. Compared with the conventional method using one radiation field, which is used not only as the probe beam but also as a pump beam, the additional re-pump beam can increase remarkably the amplitude of the signal. It is shown that the amplitude of the magnetic field resonance signal can increase more than 55% by using an additional re-pump beam, which makes the sensitivity of the magnetometer higher. Finally, we investigate the relation between amplitude of the signal and re-pump laser power, and calculate the atomic population in the trapping states with rate equations.
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/22/12/120702