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Proceedings Paper

Plasmon absorption in grating-coupled InP HEMT and graphene sheet for tunable THz detection
Author(s): Nima Nader Esfahani; R. E. Peale; Christopher J. Fredricksen; Justin W. Cleary; Joshua Hendrickson; Walter R. Buchwald; Ben D. Dawson; M. Ishigami
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Paper Abstract

Tunable resonant absorption by plasmons in the two-dimensional electron gas (2DEG) of grating-gated InP- and Graphene-based HEMTs are investigated. Fourier-spectrometer-obtained transmission resonances are observed over a wide spectral band from mm wavelengths to THz frequencies. These results are found to be consistent with grating period and 2DEG sheet charge density dependent theoretical calculations. The temperature dependence of these transmission resonances as a function of temperature is also reported for both devices. Such devices have potential as a chip-scale frequency-agile THz imaging spectrometers for man-portable or space-based spectral-sensing applications.

Paper Details

Date Published: 28 February 2012
PDF: 9 pages
Proc. SPIE 8261, Terahertz Technology and Applications V, 82610E (28 February 2012); doi: 10.1117/12.907938
Show Author Affiliations
Nima Nader Esfahani, Univ. of Central Florida (United States)
Air Force Research Lab. (United States)
Solid State Scientific Corp. (United States)
R. E. Peale, Univ. of Central Florida (United States)
Christopher J. Fredricksen, Univ. of Central Florida (United States)
Justin W. Cleary, Air Force Research Lab. (United States)
Joshua Hendrickson, Air Force Research Lab. (United States)
Walter R. Buchwald, Solid State Scientific Corp. (United States)
Ben D. Dawson, Univ. of Central Florida (United States)
M. Ishigami, Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 8261:
Terahertz Technology and Applications V
Laurence P. Sadwick; Créidhe M. O'Sullivan, Editor(s)

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