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Coherent dynamics of interwell excitons in GaAs/AlxGa1−xAs superlattices
1997
Physical Review B (Condensed Matter)
Coherent exciton dynamics in a GaAs/Al x Ga 1Ϫx As narrow-miniband superlattice is studied by spectrally resolved transient four-wave mixing. Coherent optical properties of the investigated structure are found to be strongly affected by the existence of two different heavy-hole excitonic states. One of them, the 1s heavy-hole exciton, is almost identical to the same state in noninteracting quantum wells, while the other, the heavy-hole interwell exciton, is composed of an electron and a heavy
doi:10.1103/physrevb.55.7743
fatcat:djkwf2vxyjgunijxnf5fpd5zmi