A Coil Constant Calibration Method Based on the Phase-Frequency Response of Alkali Atomic Magnetometer

Autor:	Han Yao, Danyue Ma, Junpeng Zhao, Jixi Lu, Ming Ding
Jazyk:	angličtina
Rok vydání:	2019
Předmět:	Optical atomic magnetometer coil constant calibration phase-frequency analysis Larmor precession Applied optics. Photonics TA1501-1820
Zdroj:	Photonic Sensors, Vol 9, Iss 2, Pp 189-196 (2019)
Druh dokumentu:	article
ISSN:	1674-9251 2190-7439
DOI:	10.1007/s13320-019-0530-4
Popis:	Abstract 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:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/b016aec5d2bc463b8d0e3bb69b44c0da Zobrazit plný text záznamu Full text from SpringerLink View record in DOAJ