Subpicotesla scalar atomic magnetometer with a microfabricated cell

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Zhang, Rui and Dyer, Terry and Brockie, Nathan and Parsa, Roozbeh and Mhaskar, Rahul (2019) Subpicotesla scalar atomic magnetometer with a microfabricated cell. Journal of Applied Physics, 126 (12). 124503. ISSN 0021-8979 (https://doi.org/10.1063/1.5113520)

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Abstract

We demonstrated a scalar atomic magnetometer using a microfabricated Cs vapor cell. The atomic spin precession is driven by an amplitude-modulated circularly-polarized pump laser resonant on the D1 transition of Cs atoms and detected by an off-resonant linearly-polarized probe laser using a balanced polarimeter setup. Under a magnetic field with amplitude in the Earth's magnetic field range, the magnetometer in the gradiometer mode can reach sensitivities below 150fT/√Hz, which shows that the magnetometer by itself can achieve sub-100fT/√Hz sensitivities. In addition to its high sensitivity, the magnetometer has a bandwidth close to 1 kHz due to the broad magnetic resonance inside the small vapor cell. Our experiment suggests the feasibility of a portable low-power and high-performance magnetometer which can be operated in the Earth's magnetic field. Such a device will greatly reduce the restrictions on the operating environment and expand the range of applications for atomic magnetometers, such as detection of nuclear magnetic resonance in low magnetic fields

ORCID iDs

Zhang, Rui, Dyer, Terry ORCID logoORCID: https://orcid.org/0000-0003-3102-3988, Brockie, Nathan, Parsa, Roozbeh and Mhaskar, Rahul;
  • Item type:Article
    ID code:69992
    Dates:
    Date
    Event
    28 September 2019
    Published
    26 September 2019
    Published Online
    4 September 2019
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:01 Oct 2019 09:58
    Last modified:03 Feb 2025 02:56
    URI:https://strathprints.strath.ac.uk/id/eprint/69992
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