Magnetometric Sensitivity and Spin Relaxation of Buffered Gas Cell for Cardiomagnetometer

We investigated a diode-pumped Cs-based Mx type atomic magnetometer developed aiming the detection of low magnetic fields of the human heartbeat. In this study, we characterized and optimized the rf coil voltage and the laser power to achieve the minimum magnetic resonance linewidth for the best sen...

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Bibliographic Details
Published in2019 IEEE International Symposium on Medical Measurements and Applications (MeMeA) pp. 1 - 5
Main Authors Araz, Isa, Yorulmaz, Ismail, Meraki, Adil, Kacar, Birgul, Kubanaliev, Bakmurat
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2019
Subjects
cardio magnetometer
high precision magnetometry
optically detected magnetic resonance
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Summary:We investigated a diode-pumped Cs-based Mx type atomic magnetometer developed aiming the detection of low magnetic fields of the human heartbeat. In this study, we characterized and optimized the rf coil voltage and the laser power to achieve the minimum magnetic resonance linewidth for the best sensitivity. The measured half-width of an 18 Hz at half maximum and a signal-to-noise ratio of 22800 with shot-noise-limited were obtained. The sensitivity of the magnetometer was shown to be around 228 fT/√Hz which is under the required limit for the cardiomagnetometer applications.
DOI:10.1109/MeMeA.2019.8802136