Excitons in a single quantum well wire: optical response and application to the gratings

1993 Journal de Physique IV : Proceedings  
Variational envelope function of an exciton in a single quantum well wire (SQWW) is described in the framework of the effective mass approximation for two-band model. The SQWW considered has thickness values : L, < ag, along the growth axis of the sample, and L, > 3aB for the lateral dimension (where ag is the Bohr radius). Exciton polarizations and optical response for SQWW and for a grating of QWWs are given. The role of the local fields on the optical response of these two different
more » ... different superstructures is pointed out.
doi:10.1051/jp4:1993581 fatcat:xowzhitu5vai7g7kgw24qzmnlm