Collective free-carrier scattering in semiconductors

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2 Citations (Scopus)


We present an analysis of an undoped semiconductor strongly pumped by a coherent electromagnetic radiation field. The free-carrier dynamics and the incident and scattered fields are described classically and self-consistently. The analysis predicts the existence of a collective instability which simultaneously generates a strong free-carrier grating along the propagation direction and a coherently backscattered radiation field. An example is given showing scattered intensities approaching 100% of the pump intensity. A realistic experiment to enable observation of this phenomenon is described.
Original languageEnglish
Pages (from-to)165208-165211
Number of pages3
JournalPhysical Review B: Condensed Matter and Materials Physics
Issue number16
Publication statusPublished - Apr 2001


  • semiconductors
  • electromagnetic radiation field
  • free-carrier dynamics
  • scattered fields
  • optics


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