Transient grating spectroscopy with delayed thermalization in non-combusting CO/air mixtures

Yuanyuan Li, William L. Roberts*, Michael S. Brown, G. C. Herring

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Transient grating spectroscopy is used to observe slowly forming thermal gratings in a mixture (non-combusting CO/air at ≤0.7 MPa) of two gases that are individually transparent. Thermalization in the mixture implies a photochemical process at 532 nm that populates the metastable singlet level 1Δg in O2 through collision-assisted absorption in O2 pairs. The laser intensity dependence of this process is measured.

Original languageEnglish (US)
Pages (from-to)255-258
Number of pages4
JournalOptics Communications
Volume226
Issue number1-6
DOIs
StatePublished - Oct 15 2003
Externally publishedYes

Keywords

  • Active oxygen
  • Singlet O (Δ)
  • TGS
  • Transient grating spectroscopy

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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