@article{Hawker2000Obser-5119,
  year={2000},
  doi={10.1063/1.1324981},
  title={Observation of coherent zone-folded acoustic phonons generated by Raman scattering in a superlattice},
  number={20},
  volume={77},
  journal={Applied Physics Letters},
  pages={3209--3211},
  author={Hawker, Philip and Kent, Anthony J. and Challis, Lawrence J. and Bartels, Albrecht and Dekorsy, Thomas and Kurz, Heinrich and Köhler, Klaus}
}

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    <dc:contributor>Dekorsy, Thomas</dc:contributor>
    <dc:contributor>Bartels, Albrecht</dc:contributor>
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    <dcterms:issued>2000</dcterms:issued>
    <dc:creator>Kurz, Heinrich</dc:creator>
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    <dc:contributor>Köhler, Klaus</dc:contributor>
    <dcterms:abstract xml:lang="eng">We have used pulse time-of-flight techniques to examine the phonon emission from an optically excited GaAs/AlAs superlattice structure. For laser excitation wavelengths shorter than 767 nm (the energy of E1HH1 transition), we detect a significant longitudinal acoustic phonon component directed in a narrow beam normal to the structure. Under identical excitation conditions, generation of coherent longitudinal acoustic phonons has previously been observed in this structure. We suggest that the excitation wavelength and angular characteristics of the longitudinal acoustic emission is consistent with those of propagating modes produced as coherent phonons "leak" from the superlattice structure.</dcterms:abstract>
    <dc:contributor>Challis, Lawrence J.</dc:contributor>
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    <dc:contributor>Kent, Anthony J.</dc:contributor>
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    <dcterms:title>Observation of coherent zone-folded acoustic phonons generated by Raman scattering in a superlattice</dcterms:title>
    <dcterms:bibliographicCitation>First publ. in: Applied Physics Letters 77 (2000), 20, pp. 3209-3211</dcterms:bibliographicCitation>
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