Journal
APPLIED PHYSICS LETTERS
Volume 92, Issue 20, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2919097
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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. (c) 2008 American Institute of Physics.
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