Decoherence mechanisms of Landau level THz excitations in two dimensional electron gases
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Date
2013-12-04Type
- Conference Paper
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Abstract
We report coherent THz transmission measurements on different two dimensional electron gases (2DEGs) in magnetic field. The investigated 2DEGs form in GaAs/AlGaAs heterostructures. A short (1 ps) linearly polarized THz pulse is used to excite inter Landau level transitions. The circular polarized radiation emitted by the 2DEG is then measured by electro optic sampling of the linear component orthogonal to the pump pulse polarization [1]. Here we present measurements on two high mobility samples with μ = 5×106cm2/Vs and μ = 16×106cm2/Vs respectively. The decay times of the emitted radiation are 5.5 ps and 9 ps respectively at 2 K. © 2013 AIP Publishing LLC. Show more
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publishedExternal links
Book title
The Physics of Semiconductors: Proceedings of the 31st International Conference on the Physics of Semiconductors (ICPS) 2012Journal / series
AIP Conference ProceedingsVolume
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Publisher
American Institute of PhysicsEvent
Subject
Cyclotron resonance; THz time domain spectroscopyOrganisational unit
03759 - Faist, Jérôme / Faist, Jérôme
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