Applications of the 45 reflectometry in the study of optical properties of confined semiconductor systems
We analyze the spectra of the 45 reflectometry, given by the difference Rp?Rs2 between the reflectivity for p-polarized light (Rp) and the squared reflectivity for s-polarized light (Rs2) at 45 angle of incidence, in both phonon and excitonic frequency ranges. It is shown that this spectroscopy can be useful for investigating quantized optical phonons in superlattices, and confined excitonpolaritons in thin films and near-surface transition layers.
reflectivity phonons excitons superlattices thin films surfaces