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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 11 — May. 21, 2012
  • pp: 12067–12075

Phase-dependent above-barrier ionization of excited-state electrons

Weifeng Yang, Xiaohong Song, and Zhangjin Chen  »View Author Affiliations

Optics Express, Vol. 20, Issue 11, pp. 12067-12075 (2012)

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The carrier-envelope phase (CEP)-dependent above-barrier ionization (ABI) has been investigated in order to probe the bound-state electron dynamics. It is found that when the system is initially prepared in the excited state, the ionization yield asymmetry between left and right sides can occur both in low-energy and high-energy parts of the photoelectron spectra. Moreover, in electron momentum map, a new interference effect along the direction perpendicular to the laser polarization is found. We show that this interference is related to the competition among different excited states. The interference effect is dependent on CEPs of few-cycle probe pulses, which can be used to trace the superposition information and control the electron wave packet of low excited states.

© 2012 OSA

OCIS Codes
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(320.7150) Ultrafast optics : Ultrafast spectroscopy

ToC Category:
Ultrafast Optics

Original Manuscript: March 26, 2012
Revised Manuscript: April 27, 2012
Manuscript Accepted: April 28, 2012
Published: May 11, 2012

Weifeng Yang, Xiaohong Song, and Zhangjin Chen, "Phase-dependent above-barrier ionization of excited-state electrons," Opt. Express 20, 12067-12075 (2012)

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