Abstract
Superradiant coupling of excitons in multiple quantum well Bragg structures is investigated. The superradiance leads to characteristic signatures in the spectral and time-resolved optical response. It is shown, that the superradiant mode gradually vanishes for increasing excitation intensity and for larger static disorder due to excitation induced dephasing or dephasing trough static disorder, respectively.
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All parameters correspond to GaAs: (ΔLT=0.08 meV, ε=12.9, 1 Ry=4.2 meV, E gap=1.52 eV). For our calculations we use a very small homogeneous nonradiative linewidth of γ0=0.013 meV.
The parameters used for the numerical calculation are m e=0.071 m 0, m h=0.25m 0, where m 0 is the free electron mass, ε=12.53, γ −10 =50ps, and μ=6.75Å.
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© 1999 Friedr. Vieweg & Sohn Verlagsgesellschaft mbH
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Stroucken, T. et al. (1999). Superradiant exciton-light coupling in semiconductor heterostructures—Theory. In: Kramer, B. (eds) Advances in Solid State Physics 38. Advances in Solid State Physics, vol 38. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0107623
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DOI: https://doi.org/10.1007/BFb0107623
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