Tayler, Michael C. D., Thomas Theis, Tobias F. Sjolander, John W. Blanchard, Arne Kentner, Szymon Pustelny, Alexander Pines, and Dmitry Budker. “Invited Review Article: Instrumentation for Nuclear Magnetic Resonance in Zero and Ultralow Magnetic Field.” Review of Scientific Instruments 88, no. 9 (September 2017): 091101.
https://doi.org/10.1063/1.5003347.
We review experimental techniques in our laboratory for nuclear magnetic resonance (NMR) in zero and ultralow magnetic field (below 0.1 T) where detection is based on a low-cost, non-cryogenic, spin-exchange relaxation free 87Rb atomic magnetometer. The typical sensitivity is 20-30 fT/Hz1/2 for signal frequencies below 1 kHz and NMR linewidths range from Hz all the way down to tens of mHz. These features enable precision measurements of chemically informative nuclear spin-spin couplings as well as nuclear spin precession in ultralow magnetic fields.