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Q: Fachverband Quantenoptik und Photonik

Q 43: QI Poster II (joint session QI/Q)

Q 43.19: Poster

Mittwoch, 8. März 2023, 16:30–19:00, Empore Lichthof

Spin coherence control in an optically pumped magnetometer for space-borne magnetomyography — •Simon Nordenström¹, Victor Lebedev¹, Stefan Hartwig¹, Kirti Vardhan², Sascha Neinert^2,3, Jenichi Felizco³, Martin Jutisz^2,3, Markus Krutzik^2,3, and Thomas Middelmann¹ — ¹Physikalisch-Technische Bundesanstalt, Berlin, Germany — ²Humboldt-Universität zu Berlin, Berlin, Germany — ³Ferdinand-Braun-Institut, Berlin, Germany

Detecting astronauts' neuromuscular degeneration with conventional methods such as surface or needle electromyography is inadequate or too detrimental. Optically pumped magnetometers (OPMs), on the other hand, allow for flexible handling and non-invasive measurements, utilizing the unique properties of alkali atom vapors interacting with external magnetic fields and laser light.

In this poster, we report on our progress in implementation of minimally necessary field control facilities to support the highest performance of the OPM, compatible with measurements on a space station. We investigate the balance between atomic spin coherence relaxation processes, anticipated dynamic range and response bandwidth in a magnetically perturbing environment. We present the anticipated system design and test results under lab conditions.

This work is supported by the German Space Agency (DLR) with funds provided by the Federal Ministry for Economic Affairs and Climate Action (BMWK) due to an enactment of the German Bundestag under grant numbers 50WM2168 and 50WM2069.