Theory of modulational interaction of two coupled waves. Part 1. General formulae for a nonlinear medium
- 1 February 1993
- journal article
- research article
- Published by Cambridge University Press (CUP) in Journal of Plasma Physics
- Vol. 49 (2) , 197-205
- https://doi.org/10.1017/s0022377800016913
Abstract
The modulational interaction of two waves propagating in a cubically nonlinear medium is considered. It is shown that the correct theory operates with ‘renormalized’ equations for the linear dielectric function and for an effective third-order medium response. This renormalization is due to so-called interference terms. The appearance of interference terms is a specific feature of the two-mode modulational instability in comparison with the well-known instability of a single mode.Keywords
This publication has 1 reference indexed in Scilit:
- The modulational instability of colinear wavesPhysica Scripta, 1990