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Plasmon-Enhanced Terahertz Photodetection in Graphene
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posted on 2015-07-08, 00:00 authored by Xinghan Cai, Andrei
B. Sushkov, Mohammad M. Jadidi, Luke O. Nyakiti, Rachael L. Myers-Ward, D. Kurt Gaskill, Thomas E. Murphy, Michael S. Fuhrer, H. Dennis DrewWe report a large area terahertz
detector utilizing a tunable plasmonic resonance in subwavelength
graphene microribbons on SiC(0001) to increase the absorption efficiency.
By tailoring the orientation of the graphene ribbons with respect
to an array of subwavelength bimetallic electrodes, we achieve a condition
in which the plasmonic mode can be efficiently excited by an incident
wave polarized perpendicular to the electrode array, while the resulting
photothermal voltage can be observed between the outermost electrodes.
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