• DocumentCode
    952640
  • Title

    Measurement of the geomagnetic field using parametric resonances in optically pumped He4

  • Author

    Slocum, Robert E. ; McGregor, Douglas D.

  • Author_Institution
    Texas Instruments, Incorporated, Dallas, Texas
  • Volume
    10
  • Issue
    3
  • fYear
    1974
  • fDate
    9/1/1974 12:00:00 AM
  • Firstpage
    532
  • Lastpage
    535
  • Abstract
    A single-axis vector magnetometer which can be used to measure changes in geomagnetic field components has been constructed using a parametric resonance in the optically pumped 23S1level of He4. The principle of operation for the n=1, p=1 parametric resonance is described. This resonance has a peak amplitude-to-noise ratio of 1.2 \\times 10^{4} in a 0.5 Hz noise bandwidth and a 14.9 \\times 10^{-4} G linewidth. The performance of the instrument is demonstrated by observing changes in the earth\´s field and 1.0μG calibration signals. Sensitivity is established to be 1.0 \\times 10^{-7} G in a 5 Hz noise bandwidth.
  • Keywords
    Magnetic resonance; Magnetometers; Bandwidth; Geomagnetism; Helium; Magnetic field measurement; Magnetometers; Nonlinear optics; Optical devices; Optical pumping; Optical sensors; Resonance;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.1974.1058467
  • Filename
    1058467
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=952640