Resonant Rayleigh scattering of exciton–polaritons in nitride-based multiple quantum wells

We have shown theoretically that the resonant Rayleigh scattering (RRS) of light by semiconductor quantum wells (QWs) has a polaritonic nature, which is manifested in the pronounced oscillations in the time-resolved RRS spectra from multiple QWs, recently reported. This phenomenon is especially important in GaN-based QWs because of a huge exciton oscillator strength in GaN and long-scale static disorder originated from the polarization fields. The stimulated scattering of light is predicted in GaN/AlGaN QWs pumped under oblique incidence between A and B excitons and probed in the normal incidence geometry.