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Journal Article

Terahertz coherent control of optically dark paraexcitons in Cu2O

MPS-Authors
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Kampfrath,  Tobias
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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von Volkmann,  Konrad
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Wolf,  Martin
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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e246401.pdf
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Citation

Leinß, S., Kampfrath, T., von Volkmann, K., Wolf, M., Steiner, J. T., Kira, M., et al. (2008). Terahertz coherent control of optically dark paraexcitons in Cu2O. Physical Review Letters, 101(24): 246401. doi:10.1103/PhysRevLett.101.246401.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0010-FB5A-6
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.