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Raman coherence between heavy-hole and light-hole excitons in quantum wells is isolated in an alternative spectrum and contributions from single exciton and correlated two-exciton states are studied experimentally and theoretically by excitation with different polarizations.
Homogeneous and inhomogeneous broadening of heavy- and light-hole excitons in semiconductor quantum wells are measured along with the excitation dependence of both broadenings. Isolation of disorder-induced broadening is possible with spectra in different coherent pathways.
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