The relevance of dephasing in THz valence band polariton dispersion relations

I. A. Faragai, M. F. Pereira

Research output: Contribution to journalArticlepeer-review


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 in microcavities. 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.

Original languageBritish English
Pages (from-to)937-943
Number of pages7
JournalOptical and Quantum Electronics
Issue number4
StatePublished - 1 Apr 2015


  • Antipolaritons
  • Intersubband optics
  • Many body effects
  • Nonequilibrium green function
  • Polaritons
  • Tera-mid infrared


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