Room temperature terahertz emission from grating coupled two-dimensional plasmons

Room temperature terahertz (far infrared) radiation emission from double grating coupled GaInAs∕AlGaAs∕GaAs heterojunctions is reported. Theoretical calculations of plasmon absorption spectrum are performed using a first principles electromagnetic approach. They correctly reproduce the frequency ran...

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Bibliographic Details
Published in:Applied physics letters 2008-05, Vol.92 (20)
Main Authors: Meziani, Y. M., Handa, H., Knap, W., Otsuji, T., Sano, E., Popov, V. V., Tsymbalov, G. M., Coquillat, D., Teppe, F.
Format: Article
Language:English
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Summary:Room temperature terahertz (far infrared) radiation emission from double grating coupled GaInAs∕AlGaAs∕GaAs heterojunctions is reported. Theoretical calculations of plasmon absorption spectrum are performed using a first principles electromagnetic approach. They correctly reproduce the frequency range and overall shape of the main (broad-band) part of the experimental spectra. The results clearly indicate that important part of the observed room temperature terahertz emission spectra can be due to the radiative decay of hot two-dimensional plasmons in the grating structure.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2919097