GaAs: Population Dynamics of Phonon Absorption by Electrons

– Electron-LO (longitudinal optical) phonon scattering is dominant in GaAs.

– The population of LO phonons decreases while population of phonons in other modes increases.

– In the early period (~ 1 ps), the number of electrons with lower energy decreases and high energy electrons are more populated.  Later, the electron distribution is recovering to initial equilibrium distribution.