6–8 Aug 2025
PSI
Europe/Zurich timezone

Implementation of an atomic free spin precession magnetometer targeted at medical diagnostics

7 Aug 2025, 14:20
20m
WHGA/001 - Auditorium (PSI)

WHGA/001 - Auditorium

PSI

Oral presentation OPM Development III

Speaker

Philipp Neufeld (Robert Bosch GmbH)

Description

We report on the progress of implementing an atomic magnetometer based on free spin precession using our in-house manufactured rubidium-87 MEMS (micro-electromechanical systems) vapor cells. The magnetometer employs a pulsed pump and probe laser scheme, featuring a double pass through the vapor cell configuration for the probe laser beam. The magnetometer currently exhibits a sensitivity of 300$\,$fT/Hz${}^{1/2}$ with a bandwidth of 500$\,$Hz. The high dynamic range of the device, which ranges up to magnetic field strengths in the Earth's field regime, allows for a wide range of applications, e.g. the detection of biomagnetic signals from the human body, specifically signals stemming from cardiac activity. Finally, we will discuss the potential for a compact design in future iterations.

Author

Philipp Neufeld (Robert Bosch GmbH)

Co-authors

Dr Janine Riedrich-Möller (Robert Bosch GmbH) Dr Tino Fuchs (Robert Bosch GmbH) Dmitry Budker (Helmholtz Institute Mainz)

Presentation materials

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