Stimulated Raman and Brillouin Scattering Processes in Centrosymmetric Semiconductor Plasmas

Stimulated Raman scattering from longitudinal and transverse polariton modes in a damped

sion of the Raman cross-section are analogous for multiple phonons to those we [1, 3] have already published for single phonon processes. Strong

Using 2D hydrodynamics simulations for density, temperature nd~ velocity evolutions, we have calculated the convective SBS gain (GsBs) using the Rosenbluth <formula [7j..

Compared to the first experiment with pure ethanol, the higher Raman coefficients of toluene allow the excitation of a Raman cascade: the pump excites a first Stokes wave that

-The ratio of Rayleigh to Brillouin intensities in the isotropic phase of MBBA as a function of temperature. It appears, however, that some cholesterics may have much

a in our frequency range is proportional to y or to the product of z and Ks, the adiabatic compressibility. Such large changes must be attributed to changes in z. In

L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des

The asymptotic for the thickness tending to zero are very different compared with the soft con- trast medium [17, 18], since the effect of the thin layer appears at the zeroth order