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Femtosecond pulse splitting effect in the linear transfer regime

  • Remote Sensing of Atmosphere, Hydrosphere, and Underlying Surface
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The parametric boundaries and physical mechanism of the origination of the femtosecond laser pulse splitting effect in a strongly scattering medium are ascertained on the basis of a Monte Carlo numerical solution of a nonstationary transfer equation. It is shown that the splitting effect resulting in a bimodal configuration of a pulse envelope is pronounced in a limited range of values of the scattering coefficient of the disperse medium and the anisotropy factor of the phase scattering function. The effect has been registered at pulses of less than 800 fs in length; the geometrical conditions of the signal recording are of essential importance. Under the optimal choice of parameters, the time configuration of the computed signals is in good qualitative agreement with the well-known experimental data. The accounting for the fine time structure of a transmitted signal and the multiparameter dependence of the expected effect require a certain modification of the local statistical modeling algorithms given in the Appendix.

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Original Russian Text © G.M. Krekov, A.Yu. Kopytin, 2010, published in Optica Atmosfery i Okeana.

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Krekov, G.M., Kopytin, A.Y. Femtosecond pulse splitting effect in the linear transfer regime. Atmos Ocean Opt 23, 188–196 (2010).

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