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arXiv · 1201.2701

Terahertz Magneto Optical Polarization Modulation Spectroscopy

D. K. George·A. V. Stier·C. T. Ellis·B. D. McCombe·J. Černe·A. G. Markelz
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Abstract

We report the development of new terahertz techniques for rapidly measuring the complex Faraday angle in systems with broken time-reversal symmetry using the cyclotron resonance of a GaAs two-dimensional electron gas in a magnetic field as a system for demonstration of performance. We have made polarization modulation, high sensitivity (< 1 mrad) narrow band rotation measurements with a CW optically pumped molecular gas laser, and by combining the distinct advantages of terahertz (THz) time domain spectroscopy and polarization modulation techniques, we have demonstrated rapid broadband rotation measurements to < 5 mrad precision.

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D. K. George, A. V. Stier, C. T. Ellis, B. D. McCombe, J. Černe, A. G. Markelz. 2012-01-12. Terahertz Magneto Optical Polarization Modulation Spectroscopy. https://doi.org/10.1364/josab.29.001406

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