Plasmon-Enhanced Terahertz Photodetection in Graphene
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- 作者：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 Drew
- 刊名：Nano Letters
- 出版年：2015
- 出版时间：July 8, 2015
- 年：2015
- 卷：15
- 期：7
- 页码：4295-4302
- 全文大小：499K
- ISSN：1530-6992
文摘
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.