Strong terahertz absorption bands in a scaled plasmonic crystal
- 18 June 2007
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 90 (25) , 251910
Abstract
The authors show the existence of strong absorption bands at terahertz frequencies in scaled plasmonic crystals composed of a periodic arrangement of two-dimensional electron-gas shells. The absorption bands appear as a result of the excitation of plasmon modes supported by the shells and can be tuned throughout the entire terahertz spectral region by varying the electron-gas density in the shells. These plasmonic crystals exhibit promising properties enabling their applications as tunable terahertz filters, absorbers, and thermally activated sources.Keywords
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