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

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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.


  • Camille Ndebeka-Bandou
  • Francesca Carosella
  • Robson Ferreira
  • Andreas Wacker
  • Gérald Bastard
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Condensed Matter Physics
Original languageEnglish
Article number191104
JournalApplied Physics Letters
Issue number19
StatePublished - 2012
Publication categoryResearch

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