Abstract-Plasmon-enhanced Terahertz Photodetection in Graphene

Xinghan Cai , Andrei B. Sushkov , Mohammad M. Jadidi , Luke O Nyakiti , Rachael L. Myers-Ward , D Kurt Gaskill , Thomas E. Murphy , Michael S Fuhrer , and H. Dennis Drew

Nano Lett., Just Accepted Manuscript

DOI: 10.1021/acs.nanolett.5b00137

Publication Date (Web): April 14, 2015

Copyright © 2015 American Chemical Society

http://pubs.acs.org/doi/abs/10.1021/acs.nanolett.5b00137

We report a large area terahertz detector utilizing a tunable plasmonic resonance in sub-wavelength graphene micro-ribbons on SiC(0001) to increase the absorption efficiency. By tailoring the orientation of the graphene ribbons with respect to an array of sub-wavelength 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.