An Optically Pumped Magnetometer Working in the Light-Shift Dispersed Mz Mode
AbstractWe 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. View Full-Text
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Schultze, V.; Schillig, B.; IJsselsteijn, R.; Scholtes, T.; Woetzel, S.; Stolz, R. An Optically Pumped Magnetometer Working in the Light-Shift Dispersed Mz Mode. Sensors 2017, 17, 561.
Schultze V, Schillig B, IJsselsteijn R, Scholtes T, Woetzel S, Stolz R. An Optically Pumped Magnetometer Working in the Light-Shift Dispersed Mz Mode. Sensors. 2017; 17(3):561.Chicago/Turabian Style
Schultze, Volkmar; Schillig, Bastian; IJsselsteijn, Rob; Scholtes, Theo; Woetzel, Stefan; Stolz, Ronny. 2017. "An Optically Pumped Magnetometer Working in the Light-Shift Dispersed Mz Mode." Sensors 17, no. 3: 561.
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