Internal field dynamics of coherent bloch oscillations in superlattices

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1994
Autor:innen
Leisching, Patrick
Beck, Wolfgang
Ott, Reinhold
Dhaibi, Yousef
Schwedler, Ralf
Roskos, Hartmut G.
Kurz, Heinrich
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Superlattices and Microstructures. 1994, 15(1), pp. 11-14. Available under: doi: 10.1006/spmi.1994.1003
Zusammenfassung

The dynamics of coherent wavepacket oscillations in GaAs/AlxGa1-xAs superlattices are investigated by transmittive electro-optic sampling (TEOS) with femtosecond time resolution. The internal polarization dynamics of coherently superposed Wannier-Stark states in an externally biased superlattice, denoted as Bloch oscillations, can be monitored with high sensitivity in TEOS experiments. The amplitude, dephasing, and frequency of Bloch oscillations are studied as a function of applied electric field. The increasing localization of Wannier-Stark states at higher fields results in a decreasing Bloch oscillation amplitude.

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Fachgebiet (DDC)
530 Physik
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Bloch oscillations, coherent wavepacket dynamics, Wannier-Stark states, GaAs/AIxGa1-xAs superlattice
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ISO 690DEKORSY, Thomas, Patrick LEISCHING, Wolfgang BECK, Reinhold OTT, Yousef DHAIBI, Ralf SCHWEDLER, Hartmut G. ROSKOS, Heinrich KURZ, Klaus KÖHLER, 1994. Internal field dynamics of coherent bloch oscillations in superlattices. In: Superlattices and Microstructures. 1994, 15(1), pp. 11-14. Available under: doi: 10.1006/spmi.1994.1003
BibTex
@article{Dekorsy1994Inter-4849,
  year={1994},
  doi={10.1006/spmi.1994.1003},
  title={Internal field dynamics of coherent bloch oscillations in superlattices},
  number={1},
  volume={15},
  journal={Superlattices and Microstructures},
  pages={11--14},
  author={Dekorsy, Thomas and Leisching, Patrick and Beck, Wolfgang and Ott, Reinhold and Dhaibi, Yousef and Schwedler, Ralf and Roskos, Hartmut G. and Kurz, Heinrich and Köhler, Klaus}
}
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