激光泵浦的铯-氦磁力仪的信号特征

doi:10.3969/j.issn.1000-1158.2020.03.16

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Abstract The magnetic resonance signal characteristics of cesium-helium magnetometer (CHM) based on laser pumping was studied. By pumping cesium atoms with a narrow-line-width laser, the magnetometer achieved 12.3A/T current-magnetic field conversion efficiency, which is 13.5 times greater than the CHM based on the discharge lamp pumping. The “power broadening” was eliminated by indirect pumping. By analyzing the data and the theoretical value of the line width, it was concluded that the maximum broadening factor comes from the pulsed excitation. By measuring the background noise of the light source, magnetic field, photoelectric sensor and circuit, the largest noise source of the magnetometer was determined to be the light source and magnetic field, and the optimal light intensity was obtained by taking the magnetic field resolution as the optimization target. The magnetic field resolution of the cesium-helium magnetometer can reach 0.05nT.

Key words： metrology cesium-helium magnetometer spin exchange collision magnetic field resolution chemi-ionization

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TB972

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	Articles by authors
	FU Ji-qing
	HE Qing
	ZHANG Wei

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FU Ji-qing,HE Qing,ZHANG Wei. Signal Characteristics of the Laser-pumped Cesium-Helium Magnetometer[J]. Acta Metrologica Sinica, 2020, 41(3): 354-358.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2020.03.16 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2020/V41/I3/354

［1］Kurt W. Final Report of CCEM Key Comparison CCEM.M-K1: Magnetic flux density by means of transfer standard coil［J］. Metrologia, 2005,42(1A): 01006.
［2］Budker D, Romalis M. Optical magnetometry［J］. Nature Physics, 2007,3: 227-234.
［3］Blinov E V, Zhitnikov R A, Kuleshov P P. Alkali-helium magnetometer［J］. Sov Phys Tech Phys, 1979. 49(3):588-596.
［4］Shifrin V Y, Khorev V N, Kalabin V N, et al.Experimental estimation of the accuracy of modern scalar quantum magnetometers in measurements of the Earth's magnetic field［J］. Physics of the Earth and Planetary Interiors, 2008,166(3-4): 147-152.
［5］Shifrin V Y, Alexandrov E B, Chikvadze T I, et al. Magnetic flux density standard for geomagnetometers［J］. Metrologia, 2000,37(3): 219-227.
［6］Park P G, Kim Y G, Shifrin V Y, et al. Precise standard system for low dc magnetic field reproduction［J］. Review of Scientific Instruments, 2002, 73(8): 3107-3111.
［7］伏吉庆, 张伟, 贺青. 磁感应强度基准技术发展评述［J］. 计量学报, 2019. 40(4): 700-703.
Fu J Q, Zhang W, He Q.Review of the technologies of the magnetic flux density base standard［J］. Acta Metrologica Sinica, 2019. 40(4):700-703.
［8］Blinov E V, Zhitnikov R A, Il'In E A,et al.Metrological analysis of alkali-helium magnetometers［J］. Measurement Techniques, 1986,29(11): 1078-1082.
［9］Blinov E V, Zhitnikov R A, Kuleshov P P. Spin orientation of metastable He4 atoms in collisions with optically oriented cesium atoms［J］. Sov Tech Phys Lett, 1976,2(4): 117-118.
［10］Blinov E V, Gitnikov R A, Kuleshov P P. Alkaline-helium magnetometer［J］. Soviet Physics Technical Physics, 1979, 24: 336-341.
［11］Groeger S, Bison G, Schenker J L, et al. A high-sensitivity laser-pumped Mx-magnetometer［J］. The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics, 2006,38(2): 239-247.
［12］Gilles H, Hamel J, Cheron B. Laser pumped 4He magnetometer［J］. Rev Sci Instrum, 2001,72(5): 2253-2260.
［13］Dmitriev S P, Dovator N A, Kartoshkin V A. Spin exchange and chemi-ionization during collisions of polarized metastable helium atoms with ground-state cesium atoms［J］. Technical Physics, 1999,44(9): 1033-1037.