Abstract
We have studied filamentation of 1-ps laser pulses in a scattering medium (aqueous suspension of 2-μm polystyrene microspheres) and compared filamentation dynamics to that in pure water. Our results indicate that light scattering does not alter filamentation dynamics in general, but rather results in farther position of the nonlinear focus, shorter filament length, and the development of speckle structure in the peripheral part of the beam. The experimental observations are qualitatively reproduced by the numerical model which accounts for diffraction, self-focusing, multiphoton absorption, and light scattering introduced through a stochastic diffusion and diffraction term.
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Jukna, V., Tamošauskas, G., Valiulis, G. et al. Filamentation of ultrashort light pulses in a liquid scattering medium. Appl. Phys. B 94, 175–179 (2009). https://doi.org/10.1007/s00340-008-3255-4
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DOI: https://doi.org/10.1007/s00340-008-3255-4