An Optically Pumped Magnetometer Working in the Light-Shift Dispersed Mz Mode

Schultze, Volkmar; Schillig, Bastian; IJsselsteijn, Rob; Scholtes, Theo; Woetzel, Stefan; Stolz, Ronny

doi:10.3390/s17030561

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An Optically Pumped Magnetometer Working in the Light-Shift Dispersed Mz Mode

by

Volkmar Schultze

^1,*,

Bastian Schillig

¹,

Rob IJsselsteijn

²,

Theo Scholtes

^1,3,

Stefan Woetzel

¹ and

Ronny Stolz

¹

Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, D-07745 Jena, Germany

²

Supracon AG, An der Lehmgrube 11, D-07751 Jena, Germany

³

Present Address: Physics Department, University of Fribourg, Chemin du Mus

^*

Author to whom correspondence should be addressed.

Sensors 2017, 17(3), 561; https://doi.org/10.3390/s17030561

Submission received: 18 January 2017 / Revised: 3 March 2017 / Accepted: 3 March 2017 / Published: 10 March 2017

(This article belongs to the Section Physical Sensors)

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Abstract

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.

Keywords: magnetometer; optically pumped magnetometer; light shift; Mz; magnetic-field resolution; Latin Hypercube Sampling; Downhill simplex

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MDPI and ACS Style

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. https://doi.org/10.3390/s17030561

AMA Style

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. https://doi.org/10.3390/s17030561

Chicago/Turabian Style

Schultze, Volkmar, Bastian Schillig, Rob IJsselsteijn, Theo Scholtes, Stefan Woetzel, and Ronny Stolz. 2017. "An Optically Pumped Magnetometer Working in the Light-Shift Dispersed Mz Mode" Sensors 17, no. 3: 561. https://doi.org/10.3390/s17030561

APA Style

Schultze, V., Schillig, B., IJsselsteijn, R., Scholtes, T., Woetzel, S., & Stolz, R. (2017). An Optically Pumped Magnetometer Working in the Light-Shift Dispersed Mz Mode. Sensors, 17(3), 561. https://doi.org/10.3390/s17030561

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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An Optically Pumped Magnetometer Working in the Light-Shift Dispersed Mz Mode

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