| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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All-Optical Vector Cesium Magnetometer |
| Wei-Min Sun1,2, Qiang Huang1,2, Zong-Jun Huang2, Ping-Wen Wang2, Jun-Hai Zhang2,3** |
1College of Automation, Harbin Engineering University, Harbin 150001
2 Key Lab of In-fiber Integrated Optics (Ministry Education), Harbin Engineering University, Harbin 150001
3Physics Department, University of Fribourg, Fribourg 1700, Switzerland
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| Cite this article: |
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Wei-Min Sun, Qiang Huang, Zong-Jun Huang et al 2017 Chin. Phys. Lett. 34 058501 |
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Abstract Based on power modulation of a pump laser and precessional projection detection, we present an all-optical vector magnetometer of cesium, which has a demonstrated magnitude sensitivity of 80 fT/Hz$^{1/2}$ and an orientation sensitivity of 0.1$^{\circ}$/Hz$^{1/2}$. In the device, four main factors are measured experimentally, which are the Larmor precession frequency of a polarized magnetic moment that depends on the modulus of the measured magnetic field only, two phase shifts and amplitude ratio of the precession projection in the two probe directions relative to the magnetic field orientation. This kind of magnetometer with high sensitivity in the range of the spatial angle is suitable for solving the inverse problem and geomagnetic navigation.
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Received: 13 November 2016
Published: 29 April 2017
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| PACS: |
85.70.Sq
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(Magnetooptical devices)
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42.62.Fi
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(Laser spectroscopy)
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33.57.+c
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(Magneto-optical and electro-optical spectra and effects)
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| Fund: Supported by the National Natural Science Foundation of China under Grant Nos U1631239 and U1331114, and the 111 Project to Harbin Engineering University under Grant No B13015. |
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