Plasmon-Enhanced Terahertz Photodetection in Graphene
| Autor: | D. Kurt Gaskill, Andrei B. Sushkov, Luke O. Nyakiti, Rachael L. Myers-Ward, Thomas E. Murphy, Xinghan Cai, Michael S. Fuhrer, Mohammad M. Jadidi, H. Dennis Drew |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
business.industry Graphene Terahertz radiation Mechanical Engineering Resonance Bioengineering General Chemistry Photodetection Photothermal therapy Condensed Matter Physics law.invention Optics law Electrode Electrode array Optoelectronics General Materials Science business Plasmon |
| Zdroj: | Nano Letters. 15:4295-4302 |
| ISSN: | 1530-6992 1530-6984 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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