Coherent Raman spectroscopy of glyoxal vapour

A. B. Duval, D. A. King, R. Haines, N. R. Isenor, B. J. Orr*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


The coherent Raman spectroscopic techniques CARS and PARS have been used to study glyoxal (C2H2O2) in the vapour phase. The following fundamental vibrational frequencies for trans‐glyoxal have been determined: ν1 = 2840 ± 2, ν2 = 1742.5 ± 0.5 and ν3 = 1353.5 ± 0.5 cm−1. Several hot and combination bands have also been identified. The rovibrational contour of the ν2 band is unexpectedly broad and structured and a variety of possible sources of this apparent anomaly are investigated. Novel experimental strategies include simultaneous recording of CARS and PARS spectra, major variations of pump and Stokes wavelengths to eliminate resonantly enhanced processes and rotationally resolved Raman–optical double resonance spectroscopy.

Original languageEnglish
Pages (from-to)177-182
Number of pages6
JournalJournal of Raman Spectroscopy
Issue number2
Publication statusPublished - 1986
Externally publishedYes


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