Ultrafast low-energy dynamics of graphite studied by nonlinear multi-THz spectroscopy

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2013
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Junginger, Friederike
Rebholz, Marc
Grupp, Alexander
Brida, Daniele
Huber, Rupert
Leitenstorfer, Alfred
Pashkin, Alexej
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European Union (EU): 290876
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Ultrafast Quantum Physics in Amplitude and Phase - UltraPhase, ERC Advanced Grant
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CHERGUI, Majed, ed. and others. XVIIIth International Conference on Ultrafast Phenomena : Lausanne, Switzerland, July 8-13, 2012. Les Ulis: EDP Sciences, 2013, 04023. EPJ Web of Conferences. 41. eISSN 2100-014X. ISBN 978-2-7598-0956-1. Available under: doi: 10.1051/epjconf/20134104023
Zusammenfassung

Ultraintense few-cycle THz pulses are employed to study the nonlinear response of graphite. A phase sensitive 2D spectroscopy setup is capable of detecting pump-induced transient changes as well as multi-wave mixing processes. The observed strong THz-pump THz-probe signals provide insight into ultrafast dynamics and the spectral response of the low-energy carriers. Here we report the observation of a pump-induced transmission in graphite. The relaxation dynamics shows three distinct time scales, which are assigned to carrier thermalization, phonon emission and a slow cooling down back to equilibrium.

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XVIIIth International Conference on Ultrafast Phenomena, 8. Juli 2012 - 13. Juli 2012, Lausanne
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ISO 690SCHMIDT, Christian, Bernhard MAYER, Friederike JUNGINGER, Marc REBHOLZ, Alexander GRUPP, Daniele BRIDA, Rupert HUBER, Alfred LEITENSTORFER, Alexej PASHKIN, 2013. Ultrafast low-energy dynamics of graphite studied by nonlinear multi-THz spectroscopy. XVIIIth International Conference on Ultrafast Phenomena. Lausanne, 8. Juli 2012 - 13. Juli 2012. In: CHERGUI, Majed, ed. and others. XVIIIth International Conference on Ultrafast Phenomena : Lausanne, Switzerland, July 8-13, 2012. Les Ulis: EDP Sciences, 2013, 04023. EPJ Web of Conferences. 41. eISSN 2100-014X. ISBN 978-2-7598-0956-1. Available under: doi: 10.1051/epjconf/20134104023
BibTex
@inproceedings{Schmidt2013-03-13Ultra-41825,
  year={2013},
  doi={10.1051/epjconf/20134104023},
  title={Ultrafast low-energy dynamics of graphite studied by nonlinear multi-THz spectroscopy},
  number={41},
  isbn={978-2-7598-0956-1},
  publisher={EDP Sciences},
  address={Les Ulis},
  series={EPJ Web of Conferences},
  booktitle={XVIIIth International Conference on Ultrafast Phenomena : Lausanne, Switzerland, July 8-13, 2012},
  editor={Chergui, Majed},
  author={Schmidt, Christian and Mayer, Bernhard and Junginger, Friederike and Rebholz, Marc and Grupp, Alexander and Brida, Daniele and Huber, Rupert and Leitenstorfer, Alfred and Pashkin, Alexej},
  note={Article Number: 04023}
}
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