We use an ensemble Monte Carlo simulation for photoexcited electrons and holes in a quantum well structure to model the effects of carrier-carrier scattering on the observed time resolved differential transmission spectrum from undoped, n- and p-type structures. The simulated absorption spectrum agrees with the qualitative trends observed experimentally showing reduced thermalization times as the density in the system increases. However, differences are found between the model and experiments in very dense systems with carrier concentrations exceeding 5×1011/cm2 which we attribute to strong renormalization effects in the optical spectrum and the breakdown of the single particle picture.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
- Materials Chemistry