Dynamic Evolution of Spatiotemporally Localized Electronic Wave Packets in Semiconductor Quantum Wells
- 15 July 1996
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 77 (3) , 550-553
- https://doi.org/10.1103/physrevlett.77.550
Abstract
For spatially and temporally localized laser excitation of a semiconductor quantum well qualitatively different behavior is predicted assuming resonant exciton or interband excitation conditions. Whereas the dynamic evolution of an excitonic distribution always consists of a spatial broadening, optical excitation above the band edge creates electron-hole wave packets that propagate pulselike through the medium.Keywords
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