Quantum path interferences of electron trajectories in two-center molecules

被引：22

作者：

Yang, Weifeng ^{[1
]}

Song, Xiaohong ^{[1
]}

Zeng, Zhinan ^{[1
]}

Li, Ruxin ^{[1
]}

Xu, Zhizhan ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 03期

基金：

中国国家自然科学基金;

关键词：

HIGH-HARMONIC GENERATION; ATTOSECOND SCIENCE; NONLINEAR OPTICS; IONIZATION;

D O I：

10.1364/OE.18.002558

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report a new quantum path interference effect of electron trajectories in high-order harmonic generation (HHG) from two-center molecules, in which the interference minima are mainly located in the high-energy portion of HHG spectrum. The quantum calculations of the time-frequency analyses and the classical results of the electron trajectories demonstrate very good agreement and reveal that the positions of the interference minima are associated with the cutoff of various kinds of molecular electron trajectories. The interference fringes within a half optical cycle can be clearly seen in the time-frequency analysis spectrum. Moreover, the characteristics of both the HHG in frequency domain and the corresponding attosecond pulse generation in time domain permit tracing back the interference information of these electron trajectories. These interference phenomena offer new possibilities for getting insight into the attosecond electronic dynamics in molecules. (C) 2010 Optical Society of America

引用

页码：2558 / 2565

页数：8

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