Abstract
Population and spin relaxation rates concerned with exciton luminescence and multiple LO-phonon emission lines are studied in ZnTe at 77 K by means of optical circular polarization correlation between the exciting and emitted lights. The decay times of the LO lines are determined to be much less than 10 -11sec, which are definitely shorter than the obtained exciton lifetime of 10 -10-10 -9sec. It is concluded that the LO lines are not due to hot luminescence but due to resonance Raman scattering.
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