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arXiv · 1005.5196

Simultaneous measurement of circular dichroism and Faraday rotation at terahertz frequencies using heterodyne detection

G. S. Jenkins·D. C. Schmadel·H. D. Drew
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Abstract

A far-infrared system measures the full complex Faraday angle, rotation as well as ellipticity, with an unprecedented accuracy of 10\,$μ$rad/T. The system operates on several far-infrared laser lines in the spectral range from 0.3 to 6 THz and produces results as a continuous function of temperature from 10 to 310K and applied fields between $\pm$ 8\,T. Materials successfully measured include GaAs 2-DEG heterostructures, various high temperature superconductors including Bi$_2$Sr$_2$CaCu$_2$O$_{8+x}$, Pr$_{2 - x}$Ce$_{x}$CuO$_4$, and La$_{2-x}$Sr$_x$CuO$_4$, and single crystals of the topological insulator Bi$_2$Se$_3$.

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G. S. Jenkins, D. C. Schmadel, H. D. Drew. 2010-05-28. Simultaneous measurement of circular dichroism and Faraday rotation at terahertz frequencies using heterodyne detection. https://doi.org/10.1063/1.3480554

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