Impact of spatial inhomogeneities on on-axis pulse reconstruction in femtosecond filaments
- Brée, Carsten
- Kretschmar, Martin
- Nagy, Tamas
- Kurz, Heiko G.
- Morgner, Uwe
- Kovačev, Milutin
2010 Mathematics Subject Classification
2008 Physics and Astronomy Classification Scheme
- 42.65.-k 42.65.Jx 42.65.Re 52.38.Hb
- pulse self-compression, femtosecond filamentation, nonlinear optics
We demonstrate a strong influence of the spatial beam profile on the vacuum-propagated on-axis pulse shapes for a femtosecond filament in argon. The effects can be minimized by transmitting the filament into the far-field by a laser-drilled pinhole setup. Using this method, we can monitor the pulse compression dynamics along the entire longitudinal extension of the filament, including the ionization-induced plasma channel.
- J. Phys. B, 48 (2015) pp. 094002/1--094002/6.