All-optical magnetometry for NMR detection in a micro-Tesla field and unshielded environment

Abstract

An all-optical atomic magnetometer is used to detect a proton free-precession signal from a water sample polarized in a 0.7 T field and remotely analyzed in a 4 $\mu T$ field. Nuclear spins are manipulated either by $\pi /2$ pulses or by non-adiabatic rotation. The magnetometer operates at room temperature, in an unshielded environment and has a dual-channel sensor for differential measurements.

14 pages, 9 figures

References in corpus (5)

• Detection of NMR signals with a radio-frequency atomic magnetometer
• Optical detection of NMR J-spectra at zero magnetic field
• Cs CPT magnetometer for cardio-signal detection in unshielded environment
• All optical sensor for automated magnetometry based on Coherent Population Trapping
• Dual channel self-oscillating optical magnetometer

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• Magnetic Induction Imaging with a cold-atom radio-frequency magnetometer
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• Atomic orientation by a broadly frequency-modulated radiation: theory and experiment
• Ferromagnetic contamination of Ultra-Low-Field-NMR sample containers. Quantification of the problem and possible solutions
• Spurious Ferromagnetic Remanence Detected by Hybrid Magnetometer
• Zero- to ultralow-field nuclear magnetic resonance and its applications