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A magneto-optic probe for magnetic fluctuation measurements

Rev. Sci. Instrum. 80, 103502 (2009); doi:10.1063/1.3238509

Published 7 October 2009

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W. S. Przybysz, J. Ellis, S. Chakraborty Thakur, A. Hansen, R. A. Hardin, S. Sears, and E. E. Scime
Department of Physics, West Virginia University, Morgantown, West Virginia 26506, USA
Results from a proof-of-principle experiment are presented that demonstrate it is possible to construct a completely optical, robust, and compact probe capable of spatially resolved measurements of magnetic field fluctuations smaller than 1 G over a frequency range of 1 Hz–8 MHz in a plasma. In contrast to conventional coil probes, the signal strength is independent of fluctuation frequency and the measurement technique is immune to electrostatic pickup. The probe consists of a high Verdet constant crystal, two polarizers, optical fibers, and a photodetector. ©2009 American Institute of Physics
History: Received 13 July 2008; accepted 7 September 2009; published 7 October 2009
Permalink: http://link.aip.org/link/?RSINAK/80/103502/1
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KEYWORDS and PACS

Keywords
PACS
  • 78.20.Ls
    Magnetooptical effects (bulk materials/thin films)
  • 84.32.Hh
    Inductors and coils; wiring
  • 85.60.Gz
    Photodetectors
  • YEAR: 2009

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PUBLICATION DATA

ISSN:
0034-6748 (print)   1089-7623 (online)
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