Time-resolved ballistic acceleration of electrons in a GaAs quantum-well structure
- 28 October 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 67 (18) , 2553-2556
- https://doi.org/10.1103/physrevlett.67.2553
Abstract
We have used femtosecond time-resolved optical-absorption spectroscopy to study the dynamics of high-field parallel transport of electrons in GaAs quantum wells. We have directly observed the ballistic acceleration of electrons from the band edge by measuring the nonequilibrium transient energy distribution of the electrons. The ballistic acceleration occurs on a 150-fs time scale.Keywords
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