Broadband Ultra-Sensitive Adiabatic Magnetometer
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
We introduce a new ultra-sensitive adiabatic magnetometer that has a broad bandwidth and can operate in the presence of magnetic fields and gradients. It follows conceptually typical implementations of atomic magnetometers based on alkali-metal vapor cells and lasers for optical pumping and optical Faraday effect detection, while its unique feature is a measurement of an oscillating magnetic field along the probe beam direction at frequencies lower than the resonant frequency, proportional to a static magnetic field along the pump beam direction. The bandwidth of the adiabatic magnetometer scales as the strength of the field along the pump beam. From our theoretical studies it is expected that the adiabatic magnetometer can reach 1 fT sensitivity with a bandwidth of 10 kHz, which any type of atomic magnetometers cannot achieve. Among anticipated various applications of this adiabatic magnetometer are biomagnetic sensing, nuclear magnetic resonance detection, and alkali-metal density measurements. In conclusion, we experimentally conducted alkali-metal density measurements, as an example of applications.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program
- DOE Contract Number:
- 89233218CNA000001
- OSTI ID:
- 2007353
- Report Number(s):
- LA-UR--21-24891
- Journal Information:
- 2021 IEEE Sensors Applications Symposium (SAS), Journal Name: 2021 IEEE Sensors Applications Symposium (SAS)
- Publisher:
- IEEE
- Country of Publication:
- United States
- Language:
- English
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