Determination of the momentum of impulsively generated phonon polaritons

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It is proved experimentally that the momentum of phonon polaritons generated by impulsive excitation has to be calculated using the same formula as for the case of long-pulse coherent anti-Stokes Raman scattering experiments. Attention is also drawn to the fact that, contrary to the common belief, the generated phonon polaritons are not exactly counterpropagating.

Original languageEnglish
Article number092301
Pages (from-to)923011-923013
Number of pages3
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number9
Publication statusPublished - Mar 1 2002


ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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