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Updated: May 17, 2026

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
Pedestal magnetic field measurements using a motional Stark effect polarimeter
M J Lanctot1, C T Holcomb, S L Allen
1Lawrence Livermore National Laboratory, Livermore, California 94550, USA. lanctot1@llnl.gov
Abstract:
Temperature-controlled, 0.15 nm interference filters were installed on an edge-viewing system of the motional Stark effect (MSE) polarimeter on the DIII-D tokamak. The upgraded system provides a factor of two reduction in the bandpass compared to the previous design, and linear control of the bandpass, which is unaltered by wavelength tuning. With the new system, there is a reduced dependence of the inferred polarization angle on the filter wavelength calibration. Recent measurements from the calibrated edge-viewing system show increased agreement with other MSE arrays.
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