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High-sensitivity operation of single-beam optically pumped magnetometer in a kHz frequency range

Savukov, I ; Kim, Y J ; Shah, V ; Boshier, M G

Measurement science & technology, 2017-02, Vol.28 (3), p.35104 [Periódico revisado por pares]

United States: IOP Publishing

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  • Título:
    High-sensitivity operation of single-beam optically pumped magnetometer in a kHz frequency range
  • Autor: Savukov, I ; Kim, Y J ; Shah, V ; Boshier, M G
  • Assuntos: Atomic and Nuclear Physics ; atomic magnetometer ; fT sensitivity ; high-frequency operation ; INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY ; optically pumped magnetometer ; single-beam configuration
  • É parte de: Measurement science & technology, 2017-02, Vol.28 (3), p.35104
  • Notas: MST-104283.R3
    USDOE Laboratory Directed Research and Development (LDRD) Program
    AC52-06NA25396
    LA-UR-16-24444
  • Descrição: Optically pumped magnetometers (OPM) can be used in various applications, from magnetoencephalography to magnetic resonance imaging and nuclear quadrupole resonance (NQR). OPMs provide high sensitivity and have the significant advantage of non-cryogenic operation. To date, many magnetometers have been demonstrated with sensitivity close to 1 fT, but most devices are not commercialized. Most recently, QuSpin developed a model of OPM that is low cost, high sensitivity, and convenient for users, which operates in a single-beam configuration. Here we developed a theory of single-beam (or parallel two-beam) magnetometers and showed that it is possible to achieve good sensitivity beyond their usual frequency range by tuning the magnetic field. Experimentally we have tested and optimized a QuSpin OPM for operation in the frequency range from DC to 1.7 kHz, and found that the performance was only slightly inferior despite the expected decrease due to deviation from the spin-exchange relaxation-free regime.
  • Editor: United States: IOP Publishing
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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