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Laser FM spectroscopy with photochemical modulation

A sensitive, high resolution technique for chemical intermediates

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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 theÃ,2 A″-\(\tilde X\),2 A′ 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.

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Authors and Affiliations

  1. IBM Research Laboratory, 95193, San Jose, CA, USA

    E. A. Whittaker (IBM Vistiting Scientist), H. R. Wendt, H. E. Hunziker & G. C. Bjorklund

Authors
  1. E. A. Whittaker
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  2. H. R. Wendt
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  3. H. E. Hunziker
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  4. G. C. Bjorklund
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Whittaker, E.A., Wendt, H.R., Hunziker, H.E. et al. Laser FM spectroscopy with photochemical modulation. Appl. Phys. B 35, 105–111 (1984). https://doi.org/10.1007/BF00697429

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  • DOI: https://doi.org/10.1007/BF00697429

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