Terahertz Coherent Control of Optically Dark Paraexcitons in Cu2O

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Date
2008
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Leinß, Silvan
Kampfrath, Tobias
Volkmann, Konrad von
Steiner, Johannes T.
Kira, Mackillo
Koch, Stephan W.
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Physical Review Letters ; 101 (2008). - 246401
Abstract
Intense multiterahertz fields of order megavolts per centimeter are used to coherently promote optically dark and dense paraexcitons in Cu2O from the 1s into the 2p state. The nonlinear field response of the intraexcitonic degrees of freedom is directly monitored in the time domain via ultrabroadband electro-optic sampling. The experimental results are analyzed with a microscopic many-body theory, identifying up to two internal Rabi cycles. The effects of population inversion and ponderomotive contributions are disentangled.
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530 Physics
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collective effects,spectroscopy of solid state dynamics,nonlinear optics
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ISO 690LEINSS, Silvan, Tobias KAMPFRATH, Konrad von VOLKMANN, Martin WOLF, Johannes T. STEINER, Mackillo KIRA, Stephan W. KOCH, Alfred LEITENSTORFER, Rupert HUBER, 2008. Terahertz Coherent Control of Optically Dark Paraexcitons in Cu2O. In: Physical Review Letters. 101, 246401. Available under: doi: 10.1103/PhysRevLett.101.246401
BibTex
@article{Lein2008Terah-949,
  year={2008},
  doi={10.1103/PhysRevLett.101.246401},
  title={Terahertz Coherent Control of Optically Dark Paraexcitons in Cu2O},
  volume={101},
  journal={Physical Review Letters},
  author={Leinß, Silvan and Kampfrath, Tobias and Volkmann, Konrad von and Wolf, Martin and Steiner, Johannes T. and Kira, Mackillo and Koch, Stephan W. and Leitenstorfer, Alfred and Huber, Rupert},
  note={Article Number: 246401}
}
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    <dcterms:abstract xml:lang="eng">Intense multiterahertz fields of order megavolts per centimeter are used to coherently promote optically dark and dense paraexcitons in Cu2O  from the 1s into the 2p state. The nonlinear field response of the intraexcitonic degrees of freedom is directly monitored in the time domain via ultrabroadband electro-optic sampling. The experimental results are analyzed with a microscopic many-body theory, identifying up to two internal Rabi cycles. The effects of population inversion and ponderomotive contributions are disentangled.</dcterms:abstract>
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