An optically pumped magnetometer working in the light-shift dispersed Mz mode
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Schultze, Volkmar
Leibniz Institute of Photonic Technology, Jena, Germany
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Schillig, Bastian
Leibniz Institute of Photonic Technology, Jena, Germany
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IJsselsteijn, Rob
Supracon AG, Jena, Germany
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Scholtes, Theo
Leibniz Institute of Photonic Technology, Jena, Germany - Physics Department, University of Fribourg, Switzerland
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Woetzel, Stefan
Leibniz Institute of Photonic Technology, Jena, Germany
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Stolz, Ronny
Leibniz Institute of Photonic Technology, Jena, Germany
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Published in:
- Sensors. - 2017, vol. 17, no. 3, p. 561
English
We present an optically pumped magnetometer working in a new operational mode— the light-shift dispersed Mz (LSD-Mz) mode. It is realized combining various features; (1) high power off-resonant optical pumping; (2) Mz configuration, where pumping light and magnetic field of interest are oriented parallel to each other; (3) use of small alkali metal vapor cells of identical properties in integrated array structures, where two such cells are pumped by circularly polarized light of opposite helicity; and (4) subtraction of the Mz signals of these two cells. The LSD-Mz magnetometer’s performance depends on the inherent and very complex interplay of input parameters. In order to find the configuration of optimal magnetometer resolution, a sensitivity analysis of the input parameters by means of Latin Hypercube Sampling was carried out. The resulting datasets of the multi-dimensional parameter space exploration were assessed by a subsequent physically reasonable interpretation. Finally, the best shot-noise limited magnetic field resolution was determined within that parameter space. As the result, using two 50 mm3 integrated vapor cells a magnetic field resolution below 10 fT/√Hz at Earth’s magnetic field strength is possible.
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Faculty
- Faculté des sciences et de médecine
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Department
- Département de Physique
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Language
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Classification
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Physics
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License
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License undefined
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Identifiers
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Persistent URL
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https://folia.unifr.ch/unifr/documents/305581
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