Sub-picotesla widely tunable atomic magnetometer operating at room-temperature in unshielded environments
arXiv:1804.05124 · doi:10.1063/1.5026769
Abstract
We report on a single-channel rubidium radio-frequency atomic magnetometer operating in un-shielded environments and near room temperature with a measured sensitivity of 130 fT/\sqrt{Hz}. We demonstrate consistent, narrow-bandwidth operation across the kHz - MHz band, corresponding to three orders of magnitude of magnetic field amplitude. A compensation coil system controlled by a feedback loop actively and automatically stabilizes the magnetic field around the sensor. We measure a reduction of the 50 Hz noise contribution by an order of magnitude. The small effective sensor volume, 57 mm^3, increases the spatial resolution of the measurements. Low temperature operation, without any magnetic shielding, coupled with the broad tunability, and low beam power, dramatically extends the range of potential field applications for our device.
arXiv commentMain text: 6 pages, 9 figures. Supplementary material: 3 pages, 3 figures. Published version can be found at https://aip.scitation.org/doi/full/10.1063/1.5026769 . V2: Added journal layout, minor typos fixed. Content unchanged
References in corpus (14)
- Optical Magnetometry
- Detection of NMR signals with a radio-frequency atomic magnetometer
- Electromagnetic induction imaging with a radio-frequency atomic magnetometer
- Magnetometry with millimeter-scale anti-relaxation-coated alkali-metal vapor cells
- Magnetometry Based on Nonlinear Magneto-Optical Rotation with Amplitude-Modulated Light
- Eddy current imaging with an atomic radio-frequency magnetometer
- Cs CPT magnetometer for cardio-signal detection in unshielded environment
- Detection of radio frequency magnetic fields using nonlinear magneto-optical rotation
- Multichannel optical atomic magnetometer operating in unshielded environment
- Active Underwater Detection with an Array of Atomic Magnetometers
- Shot-noise-limited magnetometer with sub-pT sensitivity at room temperature
- Machine learning based localization and classification with atomic magnetometers
- All-optical magnetometry for NMR detection in a micro-Tesla field and unshielded environment
- Simultaneous Detection of H and D NMR Signals in a micro-Tesla Field
Cited by in corpus (12)
- Wide-bandwidth atomic magnetometry via instantaneous-phase retrieval
- A Cold Atom Radio-Frequency Magnetometer
- Electromagnetic induction imaging with a scanning radio-frequency atomic magnetometer
- Detection of low-conductivity objects using eddy current measurements with an optical magnetometer
- Sub-Sm electromagnetic induction imaging with an unshielded atomic magnetometer
- Electromagnetic induction imaging with atomic magnetometers: unlocking the low-conductivity regime
- Quantum-enhanced rubidium atomic magnetometer based on Faraday rotation via 795-nm Stokes operator squeezed light
- Self-adaptive loop for external disturbance reduction in differential measurement set-up
- Alignment-based optically pumped magnetometer using a buffer gas cell
- Magnetic Induction Imaging with a cold-atom radio-frequency magnetometer
- Identification of object composition with Magnetic Inductive Tomography
- Magnetic Jones Vector Detection with RF Atomic Magnetometers