24 May 1999 Excitonic dephasing effects studied by time- and phase-resolved secondary emission
Author Affiliations +
Abstract
The initial dynamics of resonantly excited secondary emission from quantum wells are dominated by Rayleigh scattering due to excitons localized in the disordered quantum well potential. We show experimentally and theoretically how the temporal shape of the early response is related to details of the 2D disorder potential, and we determine the mean amplitude of the fluctuations and the correlation length. Spectral interferometry performed with a single speckle allows to investigate the phase of the electric field emitted by the ensemble of excitons. We find evidence for a correlation between the degree of localization and the fluctuations of the phase as a function of energy.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Stefan Haacke, Stefan Haacke, S. Schaer, S. Schaer, Benoit Deveaud, Benoit Deveaud, V. Savona, V. Savona, } "Excitonic dephasing effects studied by time- and phase-resolved secondary emission", Proc. SPIE 3624, Ultrafast Phenomena in Semiconductors III, (24 May 1999); doi: 10.1117/12.349307; https://doi.org/10.1117/12.349307
PROCEEDINGS
7 PAGES


SHARE
Back to Top