Experimental and theoretical investigations of the optical-excitation-dependent spatially indirect photoluminescence of GaAs/AlAs type II superlattices are reported. Simultaneous blue and red shifts of the indirect photoluminescence peaks are observed and analyzed, using many-body theory. The relevant microscopic mechanisms are exchange and correlation effects in the excited electron and hole plasmas as well as energy renormalizations due to the optically induced space-charge potential, the latter being the dominant effect. Comparison of theory and experiment allows us to extract the individual renormalization effects in the electron and hole plasmas.
|Original language||English (US)|
|Number of pages||8|
|Journal||Journal of the Optical Society of America B: Optical Physics|
|State||Published - Aug 1990|
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Atomic and Molecular Physics, and Optics