Attosecond streaking of Cohen-Fano interferences in the photoionization of H2+

被引：36

作者：

Ning, Qi-Cheng ^{[1
,2
]}

Peng, Liang-You ^{[1
,2
,3
]}

Song, Shu-Na ^{[1
,2
]}

Jiang, Wei-Chao ^{[1
,2
]}

Nagele, Stefan ^{[4
]}

Pazourek, Renate ^{[4
]}

Burgdoerfer, Joachim ^{[4
]}

Gong, Qihuang ^{[1
,2
,3
]}

机构：

[1] Peking Univ, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China

[2] Peking Univ, Dept Phys, Beijing 100871, Peoples R China

[3] Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China

[4] Vienna Univ Technol, Inst Theoret Phys, A-1040 Vienna, Austria

来源：

PHYSICAL REVIEW A | 2014年 / 90卷 / 01期

基金：

中国国家自然科学基金; 奥地利科学基金会;

关键词：

IONIZATION; PHOTOEMISSION; DYNAMICS; LASER;

D O I：

10.1103/PhysRevA.90.013423

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a numerical ab-initio simulation of the time delay in the photoionization of the simplest diatomic molecule H-2(+) as observed by attosecond streaking. We show that the strong variation of the Eisenbud-Wigner-Smith time delay t(EWS) as a function of energy and emission angle becomes observable in the streaking time shift t(S) provided laser field induced components are accounted for. The strongly enhanced photoemission time shifts are traced to destructive Cohen-Fano (or two-center) interferences. Signatures of these interferences in the streaking trace are shown to be enhanced when the ionic fragments are detected in coincidence.

引用

页数：6

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