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arXiv · 1303.1634

Fabry-Perot enhanced Faraday rotation in graphene

Nicolas Ubrig·Iris Crassee·Julien Levallois·Ievgeniia O. Nedoliuk·Felix Fromm·Michl Kaiser·Thomas Seyller·Alexey B. Kuzmenko
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Abstract

We demonstrate that giant Faraday rotation in graphene in the terahertz range due to the cyclotron resonance is further increased by constructive Fabry-Perot interference in the supporting substrate. Simultaneously, an enhanced total transmission is achieved, making this effect doubly advantageous for graphene-based magneto-optical applications. As an example, we present far-infrared spectra of epitaxial multilayer graphene grown on the C-face of 6H-SiC, where the interference fringes are spectrally resolved and a Faraday rotation up to 0.15 radians (9°) is attained. Further, we discuss and compare other ways to increase the Faraday rotation using the principle of an optical cavity.

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Nicolas Ubrig, Iris Crassee, Julien Levallois, Ievgeniia O. Nedoliuk, Felix Fromm, Michl Kaiser, Thomas Seyller, Alexey B. Kuzmenko. 2013-10-12. Fabry-Perot enhanced Faraday rotation in graphene. https://doi.org/10.1364/oe.21.024736

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