Transverse evolution of a plasma channel in air induced by a femtosecond laser.
We investigate the evolution of filamentation in air by using a longitudinal diffraction method and a plasma fluorescence imaging technique. The diameter of a single filament in which the intensity is clamped increases as the energy of the pump light pulse increases, until multiple filaments appear.
Deng
Y P
YP
State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China. ypdeng@mail.siom.ac.cn
Zhu
J B
JB
Ji
Z G
ZG
Liu
J S
JS
Shuai
B
B
Li
R X
RX
Xu
Z Z
ZZ
Théberge
F
F
Chin
S L
SL