Filamentation of a femtosecond laser pulse with the initial beam ellipticity
- Cite this article as:
- Fedorov, V.Y., Kandidov, V.P., Kosareva, O.G. et al. Laser Phys. (2006) 16: 1227. doi:10.1134/S1054660X06080111
The effect of transverse elliptical intensity distribution on multiple filament formation in a femtosecond laser pulse is numerically studied. Two types of filament control are demonstrated. First, the beginning of filamentation can be varied by changing the degree of ellipticity. Second, random multiple filaments can be arranged in a spatial order predetermined by the specific shape of the ellipse. The latter is valid for pulses with a peak power more than ten times higher than the critical power for self-focusing in the medium.