Graphene on nanoscale gratings for the generation of terahertz Smith-Purcell radiation

Journal Article · Mon Dec 15 00:00:00 EST 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4904264· OSTI ID:22395513

Tantiwanichapan, Khwanchai; Wang, Xuanye; Swan, Anna K.; Paiella, Roberto ^[1]

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1. Department of Electrical and Computer Engineering and Photonics Center, Boston University, 8 Saint Mary's Street, Boston, Massachusetts 02215 (United States)

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.

• OSTI ID: 22395513
• Journal Information: Applied Physics Letters, Vol. 105, Issue 24; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CHARGE TRANSPORT
ELECTRODYNAMICS
ELECTRON BEAMS
GRAPHENE
GRATINGS
HOLES
NANOSTRUCTURES
NUMERICAL ANALYSIS
PERIODICITY
SHEETS
SOLIDS
SUBSTRATES
THZ RANGE