Speaker
Ronja Rasser
Description
We present a zero-field optically pumped magnetometer that utilizes a thin microfabricated vapor cell, offering 16 measurement channels within the same cell. The vapor cell and its thermal insulation have been optimized to minimize the distance between the magnetic sample and the sensing volume, thereby enhancing the effective spatial resolution. Initial measurements indicate that all channels achieve a photon-shot-noise limited noise floor in the $\frac{pT}{\sqrt{\text{Hz}}}$ range for a sensitive voxel size of approximately 600 µm x 600 µm x 200 µm. The best channel reached 1.4 $\frac{pT}{\sqrt{\text{Hz}}}$ noise floor.
Authors
Ronja Rasser
Peter Koss
(Fraunhofer IPM)
Prof.
Svenja Knappe
(University of Colorado)
