Ultra-high-bandwidth polarization interferometry and optimal quadratic phase detection.

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ID: 31439
2019
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Ranked #27 of 39 articles by views in The Review of scientific instruments

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Abstract
A novel homodyne interferometer and analysis method are described which use orthogonal polarization components to measure large rapid changes in interferometric phase, in quadrature, in the presence of strong time-dependent attenuation of the scene beam. This approach overcomes the major sources of error associated with homodyne interferometry (sensitivity nulls, ambiguity in the direction of phase change when passing through a sensitivity null, and intolerance to beam power variations) while maintaining its intrinsic simplicity and speed, enabling extremely high-bandwidth, high-dynamic range measurements limited only by available detector technology. Using this technique, electron density in a magnetized plasma shock was measured with unprecedented bandwidth and resolution, revealing short-timescale features not previously observed.
Reference Key
weber2019ultrahighbandwidththe Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors T E Weber, R J Smith
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Journal The Review of scientific instruments
Year 2019
DOI
10.1063/1.5091569
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