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Abstract
We present a summary of experimental results on short pulse (1 ps) UV (248.6 nm) filaments. We will show that their dynamics are solely governed by the intensity in the filament, which leads us to conclude that they could be scaled to longer pulsewidths. In the special case of long pulse (≈ 1 ns) filaments, our theoretical analysis reveals an analytical solution which fully decribes the beam waist and power dissipation during propagation. We show that those filaments can propagate hundreds of metres and are insensitive to atmospheric turbulences.
