Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Giant Tunable Faraday Effect in a Semiconductor Magneto-plasma for
  Broadband Terahertz Polarization Optics   We report on a giant Faraday effect in an electron plasma in n-InSb probed
via polarization-resolved terahertz (THz) time-domain spectroscopy.
Polarization rotation angles and ellipticities reach as large as {\pi}/2 and 1,
respectively, over a wide frequency range (0.3-2.5 THz) at magnetic fields of a
few Tesla. The experimental results together with theoretical simulations show
its promising ability to construct broadband and tunable THz polarization
optics, such as a circular polarizer, half-wave plate, and polarization
modulators.

13
The categories of this paper are: quant-ph
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The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: adap-org
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The categories of this paper are: supr-con
2
The categories of this paper are: math
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
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The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn