Stimulated Raman and Brillouin backscattering of collimated beams carrying orbital angular momentum

J. T. Mendonça, Bo Thidé, Holger L Then

Research output: Contribution to journalArticle (Academic Journal)peer-review

114 Citations (Scopus)
258 Downloads (Pure)

Abstract

We study theoretically the exchange of angular momentum between electromagnetic and electrostatic waves in a plasma, due to the stimulated Raman and Brillouin backscattering processes. Angular momentum states for plasmon and phonon fields are introduced for the first time. We demonstrate that these states can be excited by nonlinear wave mixing, associated with the scattering processes. This could be relevant for plasma diagnostics, both in laboratory and in space. Nonlinearly coupled paraxial equations and instability growth rates are derived.
Translated title of the contributionStimulated Raman and Brillouin backscattering of collimated beams carrying orbital angular momentum
Original languageEnglish
Article number185005
Number of pages4
JournalPhysical Review Letters
Volume102
Issue number18
Early online date8 May 2009
DOIs
Publication statusPublished - May 2009

Keywords

  • Nonlinear phenomena: waves wave propagation and other interactions
  • Optical angular momentum and its quantum aspects

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