期刊
PHYSICAL REVIEW LETTERS
卷 105, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.105.053001
关键词
-
资金
- Marie Curie IEF (ATTOCO)
- RTN (XTRA)
- EST (MAXLAS)
- I3 Laserlab-Europe
- Swedish and European Research Councils
- National Science Foundation [PHY-0701372]
- DFG
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek'' (NWO)
We present an interferometric pump-probe technique for the characterization of attosecond electron wave packets (WPs) that uses a free WP as a reference to measure a bound WP. We demonstrate our method by exciting helium atoms using an attosecond pulse (AP) with a bandwidth centered near the ionization threshold, thus creating both a bound and a free WP simultaneously. After a variable delay, the bound WP is ionized by a few-cycle infrared laser precisely synchronized to the original AP. By measuring the delay-dependent photoelectron spectrum we obtain an interferogram that contains both quantum beats as well as multipath interference. Analysis of the interferogram allows us to determine the bound WP components with a spectral resolution much better than the inverse of the AP duration.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据