ABSTRACT
Far infrared transmission measurements in magnetic fields up to 28 T were performed on self-assembled InAs-GaAs quantum dot ensembles. The dots contained different average concentrations of electrons, ranging from 0.5 to 4 electrons per dot. Observations of several anticrossings between ground to excited state transitions confirm the strong coupling regime between electrons and phonons, and show an increase of the polaron interaction strength with higher electron concentration.
