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Knight S, Schöche S, Darakchieva V, et al. Cavity-enhanced optical Hall effect in two-dimensional free charge carrier gases detected at terahertz frequencies. Opt Lett. 2015;40(12):2688-91doi: 10.1364/OL.40.002688.
Knight, S., Schöche, S., Darakchieva, V., Kühne, P., Carlin, J. F., Grandjean, N., Herzinger, C. M., Schubert, M., & Hofmann, T. (2015). Cavity-enhanced optical Hall effect in two-dimensional free charge carrier gases detected at terahertz frequencies. Optics letters, 40(12), 2688-91. https://doi.org/10.1364/OL.40.002688
Knight, S, et al. "Cavity-enhanced optical Hall effect in two-dimensional free charge carrier gases detected at terahertz frequencies." Optics letters vol. 40,12 (2015): 2688-91. doi: https://doi.org/10.1364/OL.40.002688
Knight S, Schöche S, Darakchieva V, Kühne P, Carlin JF, Grandjean N, Herzinger CM, Schubert M, Hofmann T. Cavity-enhanced optical Hall effect in two-dimensional free charge carrier gases detected at terahertz frequencies. Opt Lett. 2015 Jun 15;40(12):2688-91. doi: 10.1364/OL.40.002688. PMID: 26076237.
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Opt Lett. 2015 Jun 15;40(12):2688-91. doi: 10.1364/OL.40.002688.

Cavity-enhanced optical Hall effect in two-dimensional free charge carrier gases detected at terahertz frequencies.

Optics letters

S Knight, S Schöche, V Darakchieva, P Kühne, J-F Carlin, N Grandjean, C M Herzinger, M Schubert, T Hofmann

PMID: 26076237 DOI: 10.1364/OL.40.002688

Abstract

The effect of a tunable, externally coupled Fabry-Perot cavity to resonantly enhance the optical Hall effect signatures at terahertz frequencies produced by a traditional Drude-like two-dimensional electron gas is shown and discussed in this Letter. As a result, the detection of optical Hall effect signatures at conveniently obtainable magnetic fields, for example, by neodymium permanent magnets, is demonstrated. An AlInN/GaN-based high-electron mobility transistor structure grown on a sapphire substrate is used for the experiment. The optical Hall effect signatures and their dispersions, which are governed by the frequency and the reflectance minima and maxima of the externally coupled Fabry-Perot cavity, are presented and discussed. Tuning the externally coupled Fabry-Perot cavity strongly modifies the optical Hall effect signatures, which provides a new degree of freedom for optical Hall effect experiments in addition to frequency, angle of incidence, and magnetic field direction and strength.

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