Search for inversion splitting in the 3ν2 band of phosphine

Shoko Okuda, Hiroyuki Sasada

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Sub-Doppler resolution spectroscopy of the 3ν2 band of phosphine has been carried out using a difference-frequency-generation source referenced to an optical frequency comb and a cavity-enhanced absorption cell. Three Q-branch transitions are recorded with a linewidth of 150 kHz, but no inversion splitting is observed even though it was predicted 300 kHz in Journal of Chemical Physics, vol. 145, art. No. 091102 (2016). Transition frequencies of six Q-branch transitions have been determined with an uncertainty of 6–16 kHz.

Original languageEnglish
Pages (from-to)27-31
Number of pages5
JournalJournal of Molecular Spectroscopy
Publication statusPublished - 2018 Apr


  • Accurate transition frequency list
  • Inversion splitting
  • Phosphine
  • Sub-Doppler resolution

ASJC Scopus subject areas

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


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