A Coil Constant Calibration Method Based on the Phase-Frequency Response of Alkali Atomic Magnetometer
| Autor: | Jixi Lu, Han Yao, Junpeng Zhao, Danyue Ma, Ming Ding |
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| Rok vydání: | 2019 |
| Předmět: |
lcsh:Applied optics. Photonics
Larmor precession Materials science phase-frequency analysis 02 engineering and technology 01 natural sciences Projection (linear algebra) 010309 optics 020210 optoelectronics & photonics 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Calibration Physics::Atomic Physics Spin (physics) Oscillation Optical atomic magnetometer lcsh:TA1501-1820 Alkali metal Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Transverse plane coil constant calibration Electromagnetic coil Physics::Space Physics Atomic physics |
| Zdroj: | Photonic Sensors, Vol 9, Iss 2, Pp 189-196 (2019) |
| ISSN: | 2190-7439 1674-9251 |
| DOI: | 10.1007/s13320-019-0530-4 |
| Popis: | We propose an in-situ method to calibrate the coil constants of the optical atomic magnetometer. This method is based on measuring the Larmor precession of spin polarized alkali metal atoms and has been demonstrated on a K-Rb hybrid atomic magnetometer. Oscillation fields of different frequencies are swept on the transverse coil. By extracting the resonance frequency through phase-frequency analysis of electron spin projection, the coil constants are calibrated to be 323.1 ± 0.28 nT/mA, 108 ± 0.04 nT/Ma, and 185.8 ± 1.03 nT/mA along the X, Y, and Z directions, respectively. |
| Databáze: | OpenAIRE |
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