5 papers · 1 filter
Sensitivity Scaling and Limits of Cavity Enhancement in Miniaturized Optically Pumped Magnetometers
Christopher H. Kiehl, María Hernández Ruiz, Cristina Sastre Jachimska +1
The sensitivity of miniaturized optically pumped magnetometers (OPMs) is limited by weak atom-light coupling, which an optical cavity can enhance. In this work, we model the photon…
An Accurate Vector Magnetometer via Zeeman Rabi Oscillations
Thanmay S. Menon, Dawson P. Hewatt, Christopher Kiehl +3
Accurate magnetic field direction sensing in compact platforms is critical in applications spanning magnetic navigation, space science, and biomedical imaging. We demonstrate a sin…
Magnetotactic bacterial populations studied with a Pound-Drever-Hall atomic magnetometer
María Hernández Ruiz, Christopher Kiehl, Vito Giovanni Lucivero +1
We demonstrate an optically pumped magnetometer that monitors spin polarization using Pound Drever Hall (PDH) technique. The instrument exhibits a noise floor of 22.2 pT/sqrt(Hz) l…
Accurate vector optically pumped magnetometer with microwave-driven Rabi frequency measurements
Christopher Kiehl, Thanmay S. Menon, Svenja Knappe +2
Robust calibration of vector optically pumped magnetometers (OPMs) is a nontrivial task, but increasingly important for applications requiring high-accuracy such as magnetic naviga…
Investigating the hyperfine systematic error and relative phase in low spin-polarization alkali FID magnetometers
D. P. Hewatt, M. Ellmeier, C. Kiehl +4
Alkali-metal optically-pumped magnetometers are prone to inaccuracies arising from the overlap of the average F = I + 1/2 and F = I - 1/2 ground-state Zeeman resonances. We employ…