Abstract:
Optical spectrum of the Raman scattering by one acoustical and one optical phonons in a quantum well – the spectrum of the excitonic biphonon resonance – has been experimentally investigated. The scattering spectra in two linear polarizations have been studied in their dependence on temperature, while the monochromatic optical excitation was linearly polarized. The co-polarized (with the excitation beam) spectrum was found to weaken, upon heating, homogeneously for all its components. In the cross-polarized spectrum, the effect of temperature was more pronounced yet inhomogeneous in the components: the high-energy side was found to be more sensitive to the heating.
Fulltext:
PDF file (219 kB)