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26 April 2024

» arxiv » 1008.1893

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Electric field-induced quantum interference control in a semiconductor: A new manifestation of the Franz-Keldysh effect
J. K. Wahlstrand ; H. Zhang ; S. Kannan ; D. S. Dessau ; J. E. Sipe ; S. T. Cundiff ;
Date:	11 Aug 2010
Abstract:	In a centrosymmetric semiconductor illuminated by a laser and its second harmonic, interference between one- and two-photon absorption results in ballistic current injection, but not modulation of the overall carrier injection rate. Based on an extension of a theory of the Franz-Keldysh effect, we show that an electric field enables modulation of the carrier injection rate. Results from a pump-probe experiment on bulk GaAs are described.
Source:	arXiv, 1008.1893
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