Plasmon-Enhanced Terahertz Photodetection in Graphene

Published/Posted: June 14, 2015

Authors: Cai, X.; Sushkov, A. B.; Jadidi, M. M.; Nyakiti, L. O.; Myers-Ward, R. L.; Gaskill, D. K.; Murphy, T. E.; Fuhrer, M. S.; Drew, H. D.

DOI: 10.1021/acs.nanolett.5b00137

Abstract: We 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.

X. Cai, A. B. Sushkov, M. M. Jadidi, L. O. Nyakiti, R. L. Myers-Ward, D. K. Gaskill, T. E. Murphy, M. S. Fuhrer and H. D. Drew, "Plasmon-Enhanced Terahertz Photodetection in Graphene", Nano Lett. 15(7) 4295-4302 (2015)
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Manuscript: Cai_NanoLett_15_4295_2015.pdf

Posted in Graphene, Plasmonics, Terahertz