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Experimental setup for the control of multiple filamentation in ethanol by using a switching femtosecond laser pulse.
(a) Numerically calculated diffraction pattern of the pump laser beam on the surface of the cell after diffraction of a wire mesh identical to that used in the experiment. (b) Measured diffraction pattern. (c) Line profile along one row of peaks shown in (a). (d) White light pattern (experiment) produced by the multiple filamentation of the corresponding major in the diffraction pattern.
White light patterns when the switching laser overlaps with the pump laser inside the glass plate at different time delays. (a) . (b) . (c) . (d) .
(a) Schematic of two traveling waves propagating along different wave vectors and overlapping at an angle . (b) Phase shift experienced by the pump laser due to the nonlinear interaction of two laser beams in glass.
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