Abstract
From exciton-resonant, time-integrated four-wave-mixing experiments (TI-FWM) carried out on semiconductors, it is well known that an increase in either the temperature (T) or the excitation density (N) will cause a decrease in the lifetime (T2) of the induced coherent polarization.1 Such changes in T2 are associated with a broadening of the homogeneous exciton linewidth (γ) due to acoustic and optical phonons and exciton-exciton scattering, i.e..
© 1998 Optical Society of America
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