Journal
REVIEW OF SCIENTIFIC INSTRUMENTS
Volume 83, Issue 11, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4766961
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Funding
- state of Thuringia/Germany [B714-10043]
- European Union Fund for Regional Development
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We show the operation of an optically pumped magnetometer array in a 50 mu T magnetic field. The various components for a fully optical and non-magnetic detector unit were constructed and evaluated, from which a prototype unit was assembled with fiber coupled electronics. In this unit the magnetometers were operated using the intensity modulated method and heated with an off-resonant laser. Calculations on the temperature distribution were used to design the magnetometer array. Different magnetometers in such a detector unit were characterized and showed identical performance. Without applying noise reduction schemes, the obtained magnetic field resolution is a factor 2.5 above the shot noise level down to frequencies of about 7 Hz. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4766961]
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