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Title: An atomic magnetometer with autonomous frequency stabilization and large dynamic range

The operation of a highly sensitive atomic magnetometer using elliptically polarized resonant light is demonstrated. It is based on measurement of zero magnetic field resonance in degenerate two level systems using polarimetric detection. The transmitted light through the polarimeter is used for laser frequency stabilization, whereas reflected light is used for magnetic field measurement. Thus, the experimental geometry allows autonomous frequency stabilization of the laser frequency leading to compact operation of the overall device and has a preliminary sensitivity of <10 pT/Hz{sup 1/2} @ 1 Hz. Additionally, the dynamic range of the device is improved by feedback controlling the bias magnetic field without compromising on its sensitivity.
Authors:
; ;  [1] ;  [2] ; ;  [1]
  1. Laser and Plasma Technology Division, Bhabha Atomic Research Centre, Mumbai 85 (India)
  2. (India)
Publication Date:
OSTI Identifier:
22392528
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 86; Journal Issue: 6; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; DETECTION; EQUIPMENT; FEEDBACK; GEOMETRY; LASERS; MAGNETIC FIELDS; MAGNETOMETERS; OPERATION; POLARIMETERS; RESONANCE; SENSITIVITY; STABILIZATION; VISIBLE RADIATION