Abstract
The authors report the results of a spectroscopic investigation of the radiative recombination processes occurring in a dense electron-hole plasma confined in quasi-one-dimensional semiconductor quantum wires. Intersubband transitions involving quantum wire states with quantum number as high as ny=5 are observed in the photoluminescence spectra recorded under stationary conditions of high excitation intensity. The temporal evolution of the luminescence is characterized by a decay time of about 800 ps longer than the one measured in the two-dimensional reference heterostructure.
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