Direct Evidence for a Bottleneck of Exciton-Polariton Relaxation in CdS
- 11 June 1973
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 30 (24) , 1205-1207
- https://doi.org/10.1103/physrevlett.30.1205
Abstract
We provide direct experimental evidence for the existence of a relaxation "bottleneck" on the lower branch of the exciton-polariton dispersion curve in CdS. The exciton life-time shows a distinct maximum of about 2.5 nsec in this energy range, as measured by time-resolved luminescence after excitation with a short, weak light pulse. There is no thermalization within the bottleneck region at 1.6 K.Keywords
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