Conclusive evidence of an attosecond pulse train observed with the mode-resolved autocorrelation technique

被引：99
|
作者：
Nabekawa, Y
Shimizu, T
Okino, T
Furusawa, K
Hasegawa, H
Yamanouchi, K
Midorikawa, K
机构：
[1] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan
[2] Univ Tokyo, Sch Sci, Dept Chem, Bunkyo Ku, Tokyo 1130033, Japan
来源：
PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 08期
关键词：
D O I：
10.1103/PhysRevLett.96.083901
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report on the direct observation of an attosecond pulse train with a mode-resolved autocorrelation technique. The chirp among the three harmonic fields is specified by analyzing two-photon above-threshold ionization spectra of electrons, resulting in a pulse duration that should be shorter than 450 as, which is, to our knowledge, the first determination of the chirp in the attosecond pulse train with an autocorrelation technique. These results will open the way to full characterization of an attosecond pulse train with its envelope.
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页数：4
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