Title :
Remote atomic vapor magnetometer with Sub-pT resolution operating at ambient temperature
Author :
Lou, Janet W. ; Fatemi, Fredrik K. ; Cranch, Geoffrey A.
Author_Institution :
C4ISR Div., Sotera Defense Solutions, Inc., Columbia, MD, USA
Abstract :
We have designed and characterized a Cesium vapor cell magnetometry system specifically aimed at meeting the challenges of remote interrogation. Standard single-mode telecom optical fibers are used for optical delivery and collection. The additional noise contribution due to optical polarization drift during propagation is mitigated by polarization and modal walk-off. We show that it is possible to obtain as low as 0.1 pT/Hz1/2 resolution at 1 Hz without temperature control over the ambient temperature range of -5 to 30 C.
Keywords :
caesium; fibre optic sensors; light propagation; magnetometers; magnetometry; modal analysis; optical fibre communication; optical fibre polarisation; optical noise; Cs; cesium vapor cell magnetometry system; modal analysis; noise contribution; optical collection; optical delivery; optical polarization drift; remote atomic vapor magnetometer; standard single-mode telecom optical fiber; temperature -5 degC to 30 degC; temperature control; Magnetic fields; Magnetometers; Optical fiber amplifiers; Optical fiber polarization; Probes; Temperature measurement; atomic vapor magnetometer; remote operation; vapor cell;
Conference_Titel :
Frequency Control Symposium & the European Frequency and Time Forum (FCS), 2015 Joint Conference of the IEEE International
Conference_Location :
Denver, CO
Print_ISBN :
978-1-4799-8865-5
DOI :
10.1109/FCS.2015.7138798
