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Intensity saturation of stimulated Raman scattering by ion-wave coupling.
- Source :
-
Physics of Fluids (00319171) . Apr86, Vol. 29 Issue 4, p1291. 7p. - Publication Year :
- 1986
-
Abstract
- Nonlinear saturation of stimulated Raman scattering caused by ion-wave coupling is investigated analytically and numerically. Various linear damping conditions for plasmons and ion-acoustic waves are included in the analysis. The main results can be summarized in terms of the normalized damping coefficient β (β=Raman gain length/plasmon absorption length), which decreases with the laser intensity I as β∼I-1/2. At low intensities (β>4) the Raman reflectivity increases according to the well-known three-wave process. At high intensities (0.2<β<2) a steady state still exists and the reflectivity is saturated as a function of the laser intensity. At very high intensities (β<0.1) temporally spiky and chaotic reflectivity is obtained. The reflectivities remain at very low levels, except for large interaction lengths. [ABSTRACT FROM AUTHOR]
- Subjects :
- *RAMAN effect
*ION acoustic waves
*PLASMONS (Physics)
Subjects
Details
- Language :
- English
- ISSN :
- 00319171
- Volume :
- 29
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Physics of Fluids (00319171)
- Publication Type :
- Academic Journal
- Accession number :
- 9827941
- Full Text :
- https://doi.org/10.1063/1.865878