Self-generated loss of coherency in Brillouin scattering and reduction of reflectivity
Abstract
Low reflectivity of stimulated Brillouin scattering is shown to result from wave-interaction incoherency caused by the ion sound-wave nonlinearity. The Brillouin reflectivity is numerically found to display a chaotic time evolution at laser fluxes below those at which ion sound-wave harmonic generation takes place. At these fluxes, the scattered light exhibits a spiky frequency spectrum. Scaling laws for the reflectivity are given.
- Publication:
-
Physical Review Letters
- Pub Date:
- May 1985
- DOI:
- 10.1103/PhysRevLett.54.2230
- Bibcode:
- 1985PhRvL..54.2230C
- Keywords:
-
- 52.35.Qz;
- 47.25.Mr;
- 52.35.Mw;
- Microinstabilities;
- Nonlinear phenomena: waves wave propagation and other interactions