The time evolution of the stimulated emission in ZnSe/Zn(S,Se) superlattices has been studied by picosecond photoluminescence spectroscopy. ?The threshold of the stimulated emission is characterised by a sharp decrease of the transition lifetime from 150 ps to less than 30 ps at a carrier density of about 10(12) cm(-2). While the experimental results are consistent with a stimulated emission process due to excitons, they show no evidence of electron-hole plasma recombination.
Time-resolved study of stimulated emission in ZnSe/Zn(S,Se) superlattices
DABBICCO, Maurizio;
1996-01-01
Abstract
The time evolution of the stimulated emission in ZnSe/Zn(S,Se) superlattices has been studied by picosecond photoluminescence spectroscopy. ?The threshold of the stimulated emission is characterised by a sharp decrease of the transition lifetime from 150 ps to less than 30 ps at a carrier density of about 10(12) cm(-2). While the experimental results are consistent with a stimulated emission process due to excitons, they show no evidence of electron-hole plasma recombination.File in questo prodotto:
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