Vol. 22, issue 12, article # 3

Krekov G. M., Kopytin A. Yu. The femtosecond pulse splitting effect in the linear transfer regime. // Optika Atmosfery i Okeana. 2009. V. 22. No. 12. P. 1114-1122 [in Russian].
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Abstract:

Based on the numerical solution of the nonstationary transfer equation using the Monte-Carlo method, we have determined the parametric boundaries and the physical mechanism of the formation of the effect of the femtosecond laser pulse splitting in the strongly scattering medium. It is shown that the splitting effect resulting in the bimodal configuration of the pulse envelope curve, is manifested in the limited range of the scattering coefficient values of the dispersed medium and the anisotropy factor of the scattering phase function. The effect has been recorded at pulse durations less than 800 fs; the geometric conditions of signal recording are of great importance. At optimal choice of parameters the time configuration of calculated signals is in good qualitative agreement with the known experimental data. The consideration of the fine time structure of an emitted signal and multiparametric dependence of an expected effect have demanded a specific modification of local algorithms of statistical modeling, which are given in the supplement.

Keywords:

light scattering, femtosecond impulse, Monte Carlo method