Vol. 28, issue 12, article # 4

Abstract:

Peculiarities of multiple filamentation of femtosecond laser pulses with gigawatt-level power in optical glass are considered. We analyze experimentally and by numerical simulations the fine structure of the plasma region accompanying light filaments and being created upon photoionization of dielectric. For the first time, the dependence of the number, position, and length of the individual generations of plasma channels on the laser energy is investigated. The role of pulse refocusing events in the formation of plasma region is discussed.

Keywords:

femtosecond laser radiation, multiple filamentation, laser pla

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