Relevance of intra- and inter-subband scattering on the absorption in heterostructures
Ndebeka-Bandou, Camille; Carosella, Francesca; Ferreira, Robson; Wacker, Andreas, et al. (2012). Relevance of intra- and inter-subband scattering on the absorption in heterostructures. Applied Physics Letters, 101, (19)
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Published
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English
Authors:
Ndebeka-Bandou, Camille
;
Carosella, Francesca
;
Ferreira, Robson
;
Wacker, Andreas
, et al.
Department:
Mathematical Physics
NanoLund: Centre for Nanoscience
Abstract:
We analyze the absorption lineshape for inter-subband transitions in disordered quasi two-dimensional 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.
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