Rotational state analysis of AlH+ by two-photon dissociation

Christopher M. Seck, Edward G. Hohenstein, Chien Yu Lien, Patrick R. Stollenwerk, Brian C. Odom*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


We perform ab initio calculations relevant to predict the cross-section of an experimentally accessible (1+1) resonance-enhanced multiphoton dissociation (REMPD) pathway in AlH+. Experimenting on AlH+ ions held in a radiofrequency trap, we confirm dissociation via this channel with analysis performed using time-of-flight mass spectrometry, demonstrate the use of REMPD for rotational state analysis, and measure the rotational distribution of trapped AlH+ to be consistent with the expected thermal distribution. AlH+ is a particularly interesting species because its electronic level structure is compatible with proposals to perform rotational optical pumping, direct Doppler cooling, and single-molecule fluorescence detection. Potential applications of trapped AlH+ include searches for time-varying constants, quantum information processing, and ultracold chemistry studies.

Original languageEnglish (US)
Pages (from-to)108-111
Number of pages4
JournalJournal of Molecular Spectroscopy
StatePublished - Jun 2014


  • Aluminum monohydride
  • Ion trap
  • Molecular ion
  • Multiphoton dissociation

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Spectroscopy
  • Physical and Theoretical Chemistry

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