NUMERICAL MODELING OF NONLINEAR OPTICAL LIMITING ВУ FULLERENЕ-CONTAINING MEDIA

The nonlinear-optical limiting of laser radiation by fullerene-containing media is numerically investigated. The joint action of two basic mechanisms that determine the optical limiting in these media (reverse saturating absorption and stimulated scattering by fine-scale refractive index inhomogeneities) is investigated. The modeling results for C60-toluene system are in good agreement with the experimental data. Therefore the attraction of additional mechanisms besides reverse saturating absorption and stimulated scattering by fine-scale refractive index inhomogeneities is not required. For the C60-toluene system, a series of parametric calculations (the dependence of attenuation on the parameters of laser radiation (wavelength, energy, pulse duration, depth and modulation period) were carried out. The numerical study of the combined effect of the reverse saturating absorption and stimulated scattering and the difference in their contributions to attenuation as a function of the energy density were also investigated for C76-toluene system.

Authors: N. G. Gogoleva

Direction: Physical Phenomena in a Solid Body, Liquids and Gases

Keywords: Nonlinear optical limiting, fullerene-containing media, reverse saturating absorption, stimulated scattering

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