Enhancement and broadening of extreme-ultraviolet supercontinuum in a relative phase controlled two-color laser field.
We experimentally demonstrate the generation of an extreme-ultraviolet (XUV) supercontinuum in argon with a two-color laser field consisting of an intense 7 fs pulse at 800 nm and a relatively weak 37 fs pulse at 400 nm. By controlling the relative time delay between the two laser pulses, we observe enhanced high-order harmonic generation as well as spectral broadening of the supercontinuum. A method to produce isolated attosecond pulses with variable width and intensity is proposed.
Zheng
Yinghui
Y
State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Acaedmy of Sciences, Shanghai, China.
Zeng
Zhinan
Z
Li
Xiaofang
X
Chen
Xiaowei
X
Liu
Peng
P
Xiong
Hui
H
Lu
Hui
H
Zhao
Shitong
S
Wei
Pengfei
P
Zhang
Li
L
Wang
Zhiguang
Z
Liu
Jun
J
Cheng
Ya
Y
Li
Ruxin
R
Xu
Zhizhan
Z