The relevance of dephasing in THz valence band polariton dispersion relations

THz polaritons have strong potential for device applications and are a challenging field of fundamental studies. In this paper, we use a simplified mathematical model based on a nonlinear dielectric constant approach to the optical susceptibility to describe the coupling of TE-polarized THz radiation with an intervalence band transition in GaAs/Al0.3Ga0.7As multiple quantum wells embedded inmicrocavities. The energy dispersions relations leading to THz polaritons are investigated. Here we focus on the interplay of cavity length and size of the active region against the dephasing mechanisms on polariton dispersion relations.