%0 Journal Article
%T Asymmetry in Photoionization of Atoms Irradiated by Few-cycle Laser Pulses<br>周期量级激光脉冲作用下原子电离不对称性研究
%A SHAO Chu-yin
%A ZHANG Jing-tao
%A <br>邵初寅
%A 张敬涛
%J 光子学报
%D 2012
%I 
%X Photoionization of atoms in intense, few-cycle laser pulses is inversion asymmetry. An asymmetric parameter is used to quantitatively analyze the asymmetry degree. By means of a non-perturbative quantum scattering theory and employing a three-mode laser field to mimic the short pulse, the variation of the asymmetric parameter are researched with the carrier-envelope phase and duration of the pulses. It is found that the asymmetry degree varies with the carrier-envelope phase as a sine-like pattern, and the maximum of asymmetry degree varies with pulse intensity and pulse duration. Along with the increasing laser intensities, the maximal asymmetry firstly decreases and then increases after it reaches a minimal value. At higher intensities, the asymmetry is still distinctive for relative-long few-cycle pulses. Thus, increasing the pulse intensity is helpful to observe the carrier-envelope phase-dependence.
%K Inversion asymmetry
%K Few-cycle laser pulse
%K Photoelectron angular distribution
%K Carrier-envelope phase<br>反演不对称
%K 周期量级激光脉冲
%K 光电子角分布
%K 包络位相
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=9F6139E34DAA109F9C104697BF49FC39&aid=1D36885FD7A8294B634EE71F2D9C526E&yid=99E9153A83D4CB11&vid=2001E0D53B7B80EC&iid=CA4FD0336C81A37A&sid=BE33CC7147FEFCA4&eid=B6DA1AC076E37400&journal_id=1004-4213&journal_name=光子学报&referenced_num=0&reference_num=20