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Title: A high-sensitivity push-pull magnetometer

We describe our approach to atomic magnetometry based on the push-pull optical pumping technique. Cesium vapor is pumped and probed by a resonant laser beam whose circular polarization is modulated synchronously with the spin evolution dynamics induced by a static magnetic field. The magnetometer is operated in a phase-locked loop, and it has an intrinsic sensitivity below 20fT/√(Hz), using a room temperature paraffin-coated cell. We use the magnetometer to monitor magnetic field fluctuations with a sensitivity of 300fT/√(Hz)
Authors:
; ; ;  [1]
  1. Department of Physics, University of Fribourg, Fribourg 1700 (Switzerland)
Publication Date:
OSTI Identifier:
22275821
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 2; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CESIUM; LASERS; MAGNETIC FIELDS; MAGNETOMETERS; OPTICAL PUMPING; PARAFFIN; SENSITIVITY; SPIN; TEMPERATURE RANGE 0273-0400 K; VAPORS