Laser FM spectroscopy with photochemical modulation - A sensitive, high resolution technique for chemical intermediates

E. A. Whittaker, H. R. Wendt, H. E. Hunziker, G. C. Bjorklund

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

We have combined the techniques of frequency-modulation spectroscopy (FMS) and photochemical-modulation spectroscopy to carry out high-resolution, high-sensitivity absorption measurements on the formyl and amino radicals. Using the (0,90, 0)-(0,01, 0) band of the Ã,2A″- {Mathematical expression},2A′ transition of HCO at 614 nm, we obtained a sensitivity limit for absorption of 1.5×10-6. Reconstructed spectra of several HCO lines are presented.

Original languageEnglish
Pages (from-to)105-111
Number of pages7
JournalApplied Physics B Photophysics and Laser Chemistry
Volume35
Issue number2
DOIs
StatePublished - Oct 1984

Keywords

  • 0.7.65.Eh
  • 33.20.Kf
  • 82.50.-m

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