Control of multiple filamentation in air.
In this Letter we provide what is believed to be the first experimental evidence of suppression of the number of filaments for high-intensity laser pulses propagating in air by beam astigmatism. We also show that the number, pattern, and spatial stability of the filaments can be controlled by varying the angle that a focusing lens makes with the axial direction of propagation. This new methodology can be useful for applications involving atmospheric propagation, such as remote sensing.
Fibich
Gadi
G
Department of Applied Mathematics, Tel Aviv University, Tel Aviv 69978, Israel. fibich@math.tau.ac.il
Eisenmann
Shmuel
S
Ilan
Boaz
B
Zigler
Arie
A