A magneto-optic probe for magnetic fluctuation measurements

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 cont...

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Veröffentlicht in:Review of scientific instruments 2009-10, Vol.80 (10), p.103502-103502-4
Hauptverfasser: Przybysz, W. S., Ellis, J., Thakur, S. Chakraborty, Hansen, A., Hardin, R. A., Sears, S., Scime, E. E.
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container_end_page 103502-4
container_issue 10
container_start_page 103502
container_title Review of scientific instruments
container_volume 80
creator Przybysz, W. S.
Ellis, J.
Thakur, S. Chakraborty
Hansen, A.
Hardin, R. A.
Sears, S.
Scime, E. E.
description 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.
doi_str_mv 10.1063/1.3238509
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title A magneto-optic probe for magnetic fluctuation measurements
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