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Self-guided propagation of femtosecond light pulses in water
Authors:Dubietis A  Tamosauskas G  Diomin I  Varanavicius A
Institution:Department of Quantum Electronics, Vilnius University, Sauletekio Avenue 9, Building 3, LT-2040 Vilnius, Lithuania. audrius.dubietis@ff.vu.lt
Abstract:We report experimental evidence of self-guided propagation of femtosecond laser pulses in water. A light filament induced by 170-fs, 527-nm pulses has a diameter of 60 microm (at the 1/e2 level) and persists over a distance of 20 mm. The filamentary mode is sustained over a wide range of input power, and the energy excess is converted into conical emission. In the time domain, the pulse trapped in a filamentary mode experiences a number of splittings occurring in the early stage of filament formation.
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