Optical properties of excitons in semiconductor superlattices and microcavities

The optical response of Mott-Wannier excitons is investigated in semiconductor superlattices and microcavities. p-Polarized light is considered to calculate the reflectivity R-p and dispersion relation of the collective normal modes in superlattices accounting for extrinsic Morse potential wells, and R-p in microcavities, Results of R-p exhibit well-defined peaks of the exciton bound states in the Morse potentials for both transverse and longitudinal modes. Comparisons of R-p with experimental reflectivity data of light for semiconductor microcavities exhibit good qualitative agreement as well as Rabi splitting. (C) 1999 Academic Press.