Speaker
Jeremias Gutekunst
(Fraunhofer IPM)
Description
We have developed a magnetic field camera for detecting defects in metal components and battery imaging.
Our approach leverages the high sensitivity and robustness of free-spin-precession (FSP) and Mz magnetometry, combined with a fast, commercial camera operating at up to 90kHz.
Unlike current state-of-the-art optically pumped magnetometers (OPM), which record single or few data points using custom-made diode arrays, we image the entire volume of the rubidium cell directly onto the camera.
This method allows us to read out spatially resolved magnetic field strengths with $200\mu m$ resolution in parallel, enabling time-efficient data acquisition at an experimental validated sensitivity of $100pT$.
Author
Jeremias Gutekunst
(Fraunhofer IPM)
Co-authors
Mr
Andreas Blug
(Fraunhofer IPM)
Peter Koss
(Fraunhofer IPM)
Ms
Ronja Rasser
(Fraunhofer IPM)
