Relevance of intra- and inter-subband scattering on the absorption in heterostructures
arXiv:1207.7289 · doi:10.1063/1.4766192
Abstract
We analyze the absorption lineshape for inter-subband transitions in disordered quasi 2D heterostructures by an exact calculation. The intra-subband scatterings control the central peak while the tails of the absorption line are dominated by the inter-subband scattering terms. Our numerical study quantitatively assesses the magnitude of the free carrier absorption. The accuracy of different models currently used for gain/absorption is discussed.
arXiv comment4 pages, 4 figures
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