Journal
APPLIED PHYSICS LETTERS
Volume 105, Issue 24, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4904264
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Funding
- National Science Foundation [DMR-1308659]
- Royal Thai Fellowship
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1308659] Funding Source: National Science Foundation
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Generation of THz radiation based on the Smith-Purcell effect in graphene is investigated numerically. The specific device geometry considered involves an electrically biased single-layer sheet of graphene deposited on a periodic array of holes in a solid substrate. Rigorous electrodynamic simulations combined with a basic model of charge transport are presented, showing that technologically significant output power levels can be obtained at geometrically tunable THz frequencies. These results suggest that graphene is a uniquely suited materials platform for the demonstration of THz electron-beam radiation mechanisms in compact solid-state systems. (C) 2014 AIP Publishing LLC.
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