Title: On modulational instability of two coupled waves
Abstract: The modulational instability of two waves propagating in a cubically nonlinear medium is considered. It is shown that the correct theory in the case of comparatively small instability rates operates with “renormalized” equations as for a linear dielectric function, so for an effective third-order medium response. This renormalization is due to so-called interference terms. The appearance of the interference terms is a specific feature of the two-mode modulational instability in comparison with the well-known instability of a single mode. The instability of two pump Langmuir waves is investigated.
Publication Year: 1992
Publication Date: 1992-12-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 6
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