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Coherent control of acoustic phonons in semiconductor superlattices

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1998

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Dekorsy, Thomas
Kurz, Heinrich
Köhler, Klaus

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Applied Physics Letters. 1998, 72(22), pp. 2844-2846. Available under: doi: 10.1063/1.121476

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Coherent acoustic phonons are generated in GaAs/AlAs superlattices by excitation with femtosecond laser pulses. Several modes of the acoustic phonon spectrum are observed, in agreement with the effect of zone folding in the mini-Brillouin zone of the superlattice. By applying successive pump pulses we are able to silence the first back-folded mode near q=0, while selectively enhancing the coherent amplitude of higher order backfolded modes. This increase in the spectroscopic sensitivity opens the way to detailed time resolved studies of higher order acoustic modes in superlattices.

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ISO 690BARTELS, Albrecht, Thomas DEKORSY, Heinrich KURZ, Klaus KÖHLER, 1998. Coherent control of acoustic phonons in semiconductor superlattices. In: Applied Physics Letters. 1998, 72(22), pp. 2844-2846. Available under: doi: 10.1063/1.121476
BibTex
@article{Bartels1998Coher-9400,
  year={1998},
  doi={10.1063/1.121476},
  title={Coherent control of acoustic phonons in semiconductor superlattices},
  number={22},
  volume={72},
  journal={Applied Physics Letters},
  pages={2844--2846},
  author={Bartels, Albrecht and Dekorsy, Thomas and Kurz, Heinrich and Köhler, Klaus}
}
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