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 23S1 level 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 
in a 0.5 Hz noise bandwidth and a 
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 
G in a 5 Hz noise bandwidth.
in a 0.5 Hz noise bandwidth and a 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 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 :
