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arXiv · 1804.05642

Limits on Magnetically Induced Faraday Rotation from Polarized $^3$He Atoms

Josh Abney·Mark Broering·Murchhana Roy·Wolfgang Korsch
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Abstract

Faraday rotation has become a powerful tool in a large variety of physics applications. Most prominently, Faraday rotation can be used in precision magnetometry. Here we report the first measurements of gyromagnetic Faraday rotation on a dense, hyperpolarized $^3$He gas target. Theoretical calculations predict the rotations of linearly polarized light due to the magnetization of spin-1/2 particles are on the scale of 10$^{-7}$ radians. To maximize the signal, a $^3$He target designed to use with a multipass cavity is combined with a sensitive apparatus for polarimetry that can detect optical rotations on the order of 10$^{-8}$ radians. Although the expected results are well above the sensitivity for the given experimental conditions, no nuclear-spin induced rotation was observed.

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Josh Abney, Mark Broering, Murchhana Roy, Wolfgang Korsch. 2018-04-16. Limits on Magnetically Induced Faraday Rotation from Polarized $^3$He Atoms. https://doi.org/10.1103/physreva.99.023831

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