Self-focusing Distance of Very High Power Laser Pulses.
We show numerically for continuous-wave beams and experimentally for femtosecond pulses propagating in air, that the collapse distance of intense laser beams in a bulk Kerr medium scales as 1/P;1/2 for input powers P that are moderately above the critical power for self focusing, but that at higher powers the collapse distance scales as 1/P.
Fibich
Gadi
G
Eisenmann
Shmuel
S
Ilan
Boaz
B
Erlich
Yossi
Y
Fraenkel
Moshe
M
Henis
Zohar
Z
Gaeta
Alexander
A
Zigler
Arie
A