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Updated: Jun 18, 2026

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
A magneto-optic probe for magnetic fluctuation measurements
W S Przybysz1, J Ellis, S Chakraborty Thakur
1Department of Physics, West Virginia University, Morgantown, West Virginia 26506, USA.
Abstract:
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.
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