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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 3 — Feb. 1, 2010
  • pp: 2558–2565

Quantum path interferences of electron trajectories in two-center molecules

Weifeng Yang, Xiaohong Song, Zhinan Zeng, Ruxin Li, and Zhizhan Xu  »View Author Affiliations


Optics Express, Vol. 18, Issue 3, pp. 2558-2565 (2010)
http://dx.doi.org/10.1364/OE.18.002558


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Abstract

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.

© 2010 OSA

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(320.7150) Ultrafast optics : Ultrafast spectroscopy

ToC Category:
Nonlinear Optics

History
Original Manuscript: November 19, 2009
Revised Manuscript: January 5, 2010
Manuscript Accepted: January 5, 2010
Published: January 22, 2010

Citation
Weifeng Yang, Xiaohong Song, Zhinan Zeng, Ruxin Li, and Zhizhan Xu, "Quantum path interferences of electron trajectories in two-center molecules," Opt. Express 18, 2558-2565 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-3-2558


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