Stimulated Raman and Brillouin Backscattering of Collimated Beams Carrying Orbital Angular Momentum
- 8 May 2009
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 102 (18), 185005
- https://doi.org/10.1103/physrevlett.102.185005
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.This publication has 10 references indexed in Scilit:
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