Open AccessEvolvement of filamentation of femtosecond laser pulses of a kHz repetition rate propagating in Air
Author(s) -
Duan Zuo-Liang,
Jianping Chen,
Fang Zong-Bao,
Xingtao Wang,
Ruxin Li,
Lin Liu,
Zhizhan Xu
Publication year - 2004
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.53.473
Subject(s) - filamentation , femtosecond , protein filament , laser , optics , ionization , physics , plasma , pulse (music) , materials science , atomic physics , ion , quantum mechanics , detector , composite material
In this paper the evolvement of the filamentation of femtosecond laser pulses propagating in air is studied experimentally.We observed the variation of light intensity in the beam profile and the interaction of the filament with the distribution of light intensity in the forming of the plasma filament by using imaging.The experimental results show that the laser pulse propagating in air first forms two filaments and then merges into a single filament.The numerical simulation using the nonlinear Schrdinger equation coupled to a multiphoton ionization law appears to describe several experimental results quite well.