Browsing by Author "Demircan, Ayhanj"
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- ItemSelf-pinching of pulsed laser beams in a plasma filament(Berlin : Weierstraß-Institut für Angewandte Analysis und Stochastik, 2008) Brée, Carsten; Demircan, Ayhanj; Skupin, Stefan; Bergé, Luc; Steinmeyer, GünterCompeting nonlinear optical effects that act on femtosecond laser pulses propagating in a self-generated plasma filament may give rise to a pronounced radial deformation of the beam, similar to the z-pinch contraction of pulsed high-current discharges. This self-pinching locally increases the photon density. The process is further identified as the first stage in the recently observed self-compression of femtosecond laser pulses propagating in filaments. Self-pinching also explains the complicated spatio-temporal shapes generally observed in filament compression experiments