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Asymptotic treatment of the three-wave nonlinear parametric interaction

Published online by Cambridge University Press:  07 February 2005

V. FUCHS
Affiliation:
Association Euratom/IPP.CR, Czech Academy of Sciences, 18221 Prague 8, Czech Republic ([email protected])

Abstract

A novel integral representation suitable for the study of asymptotic ($L/L_{0}\,{\gg}\,1$, $L$ being the plasma length and $L_{0}$ the basic gain length) stability of the inhomogeneous three-wave interaction is formulated and applied to the special case of uniform gain and ramp wavenumber mismatch. The absolute instability condition is $\kappa L_{0} \,{<}\, \pi /8$ ($\kappa$ being the mismatch gradient), with the wave conversion performed in a zone of width $4/\kappa L_{0}$ located at the boundary of wave incidence.

Type
Papers
Copyright
2005 Cambridge University Press

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