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Optics Letters

Optics Letters


  • Vol. 23, Iss. 7 — Apr. 1, 1998
  • pp: 531–533

Observation of pure rotational absorption spectra in the ν2 band of hot H2O in flames

R. Alan Cheville and D. Grischkowsky  »View Author Affiliations

Optics Letters, Vol. 23, Issue 7, pp. 531-533 (1998)

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We present measurements of absorption spectra of hot-water vapor generated in a propane–air flame in the far-infrared region of the spectrum from 0.1 to 3.5 THz (3.3 to 117cm-1). Transitions within the rotational manifold of both the ground and the ν2=1 vibrational levels were observed. The measurements are in good agreement with calculations of the predicted absorption spectra at 1300 K based on tabulated line intensities, whereas predicted theoretical line widths were found to be approximately one third too narrow.

© 1998 Optical Society of America

OCIS Codes
(260.3090) Physical optics : Infrared, far
(300.1030) Spectroscopy : Absorption
(300.6170) Spectroscopy : Spectra

R. Alan Cheville and D. Grischkowsky, "Observation of pure rotational absorption spectra in the ν2 band of hot H2O in flames," Opt. Lett. 23, 531-533 (1998)

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