title: Light filaments with higher-order Kerr effect.
abstract: The influence mechanism of higher-order Kerr effect on the propagation of laser beam is investigated by a modified model, which indicates that a collapsing wave will transform into a universe blowup profile. The analysis of higher-order terms of the nonlinear refractive index shows that the filamentation process can be induced by Kerr self-focusing without the occurrence of the ionization effect. The determining role of the combination of self-focusing and spontaneous defocusing and the energy reservoir in formation of lengthy filament is confirmed visually.
authors.affiliation: Key Laboratory of Atmospheric Composition and Optical Radiation, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei Anhui, 230031, China.
authors.forename: Haitao
authors.initials: H
authors.lastname: Wang
authors.forename: Chengyu
authors.initials: C
authors.lastname: Fan
authors.forename: Pengfei
authors.initials: P
authors.lastname: Zhang
authors.forename: Chunhong
authors.initials: C
authors.lastname: Qiao
authors.forename: Jinghui
authors.initials: J
authors.lastname: Zhang
authors.forename: Huimin
authors.initials: H
authors.lastname: Ma