Relevance of intra- and inter-subband scattering on the absorption in heterostructures

Camille NDebeka-Bandou; Francesca Carosella; Robson Ferreira; Andreas Wacker; Gérald Bastard

doi:10.1063/1.4766192

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arXiv · 1207.7289

Relevance of intra- and inter-subband scattering on the absorption in heterostructures

Camille NDebeka-Bandou·Francesca Carosella·Robson Ferreira·Andreas Wacker·Gérald Bastard

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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.

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Camille NDebeka-Bandou, Francesca Carosella, Robson Ferreira, Andreas Wacker, Gérald Bastard. 2012-10-25. Relevance of intra- and inter-subband scattering on the absorption in heterostructures. https://doi.org/10.1063/1.4766192

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