Development of an optically pumped atomic magnetometer using a K-Rb hybrid cell and its application to magnetocardiography | Zendy

Yosuke Ito | Zendy; Hiroyuki Ohnishi | Zendy; Keigo Kamada | Zendy; Tetsuo Kobayashi | Zendy

Open Access

Development of an optically pumped atomic magnetometer using a K-Rb hybrid cell and its application to magnetocardiography

Author(s) -

Yosuke Ito,

Hiroyuki Ohnishi,

Keigo Kamada,

Tetsuo Kobayashi

Publication year - 2012

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4742847

Subject(s) - magnetocardiography , magnetometer , optical pumping , laser linewidth , rubidium , sensitivity (control systems) , materials science , optoelectronics , atomic physics , optics , nuclear magnetic resonance , physics , laser , magnetic field , electronic engineering , quantum mechanics , potassium , metallurgy , engineering

We have developed an optically pumped atomic magnetometer using a hybrid cell of K and Rb. The hybrid optical pumping technique can apply dense alkali-metal vapor to the sensor head and leads to high signal intensity. We use dense Rb vapor as probed atoms, and achieve a sensitivity of approximately 100 fTrms/Hz[1/2] around 10 Hz. In this case, the sensitivity is limited by the system noise, and the magnetic linewidth is narrower than that for direct Rb optical pumping. We demonstrated magnetocardiography using the magnetometer and obtained clear human magnetocardiograms

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