Observation of surface and interface phonon-polaritons in superlattices

Modulation spectroscopy study of a strained layer GaAs/GaAsP multiple quantum well structure

“…20 Folded acoustic phonons and surface and interface polar optical phonons were observed in the photoluminescence spectra. 21,22 There have been some studies on the optical and electrical properties of GaAs/ GaAs 1-x P x QWs. However, the band offset at the heterojunction, which plays a crucial role in the device design, is still disputed both theoretically [23][24][25] and experimentally.…”