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Signature of multi-channel interference in high-order harmonic generation from N2 driven by intense mid-infrared pulses

Authors
  • Li, Guihua
  • Yao, Jinping
  • Xie, Xinhua
  • Xie, Hongqiang
  • Zeng, Bin
  • Chu, Wei
  • Jing, Chenrui
  • Ni, Jielei
  • Zhang, Haisu
  • Liu, Xiaojun
  • Chen, Jing
  • Cheng, Ya
  • Xu, Zhizhan
Type
Preprint
Publication Date
Jun 02, 2013
Submission Date
Jun 02, 2013
Identifiers
arXiv ID: 1306.0177
Source
arXiv
License
Yellow
External links

Abstract

We investigate the multi-electron dynamics in high-order harmonic generation (HHG) from N2 molecules. Clear spectral minima are observed in the cutoff region at all three mid-infrared wavelengths (i.e., 1300, 1400 and 1500 nm) chosen in our experiment. It is found that the positions of the spectral minima do not depend on the alignment angles of molecules. In addition, the spectral minima shift almost linearly with the increasing laser intensity at all three wavelengths, which provides a strong evidence on the dynamic multi-channel interference origin of these minima. The advantages of observation of dynamic multi-channel interference based on HHG driven by long wavelength lasers are discussed.

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