Molecular rotational effects in free-space N+2 lasers induced by strong-field ionization

  • Jinping Yao
  • , Bin Zeng
  • , Wei Chu
  • , Haisu Zhang
  • , Jielei Ni
  • , Hongqiang Xie
  • , Ziting Li
  • , Chenrui Jing
  • , Guihua Li
  • , Huailaing Xu
  • , Ya Cheng*
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

Free-space N2+ lasers induced by strong-field ionization have shown a great potential for the standoff diagnostics of quantum rotational wave packets in air molecules and for the fingerprint identification of chemical species, thanks to their capability of remotely generating intense, narrow-bandwidth, coherent emissions. It has been observed that the laser signals are strongly influenced by the dynamics of the rotational wave packets in the N2+ ions produced by photoionization in the intense laser fields. This chapter gives an overview of the experimental results of the effects of molecular rotations in the free-space N2+ lasers. We will begin with the description of the ultrafast dynamics of coherent rotational wave packets using the N2+ laser as an optical probe. We will follow with a discussion of the coherent coupling of the rotational quantum states in a strong laser field, manipulation of the polarization of N2+ laser emission, and the observation of impulsive rotational Raman scattering induced by the N2+ laser. Finally, a summary and perspective will be given.

Original languageEnglish
Title of host publicationSpringer Series in Optical Sciences
PublisherSpringer Verlag
Pages75-88
Number of pages14
DOIs
StatePublished - 2018

Publication series

NameSpringer Series in Optical Sciences
Volume208
ISSN (Print)0342-4111
ISSN (Electronic)1556-1534

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