Time-resolved spectroscopy is another domain of quantum coherence.
Interband excitation of electrons by strong femtosecond pulses
and immediate electron response and relaxation are studied
theoretically for the case of disordered semiconductors.
The results, showing a competition between light
and disorder scattering, represent not only a simple but
representative simulation of the behavior of interacting systems,
but also serve as a basic reference for testing transport equations.
