Temperature dependence of the optical spectrum of the excitonic biphonon resonance
Koudinov A. V.1
1Ioffe Institute, St. Petersburg, Russia
Email: koudinov@orient.ioffe.ru
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. Keywords: Raman scattering, spectroscopy, exciton.
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