Open AccessCarrier-envelope phase dependence of non-sequential double ionization in few-cycle pulses
Author(s) -
Hongyun Liu,
Jing Chen,
Hongbing Jiang,
Jie Liu,
Panming Fu,
Qihuang Gong,
Zong-Chao Yan,
Bingbing Wang
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.020562
Subject(s) - carrier envelope phase , double ionization , atomic physics , ionization , laser , scattering , ion , physics , polarization (electrochemistry) , kinetic energy , above threshold ionization , optics , phase (matter) , pulse (music) , momentum (technical analysis) , materials science , photoionization , chemistry , finance , quantum mechanics , detector , economics
The influence of carrier-envelope phase (CEP) of a few-cycle laser pulse on non-sequential double ionization (NSDI) of an atom is investigated by applying the three-dimensional semi-classical re-scattering method. The asymmetric momentum distribution of the double-charged ion parallel to the laser polarization, which depends on the CEP, is explained by comparing the contributions from several half-cycles in the laser pulse. The ionization rate and the returning kinetic energy of the first electron dramatically affect the contributions from each half-cycles, and play different roles in different laser intensity regimes.