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Diode Laser Measurements of H2O Line Intensities and Self-Broadening Coefficients in the 1.4-μM Region

✍ Scribed by S. Langlois; T.P. Birbeck; R.K. Hanson

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
674 KB
Volume
163
Category
Article
ISSN
0022-2852

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✦ Synopsis

Spectrally resolved measurements of pure water vapor absorption spectra have been performed with a tunable diode laser. The laser, a distributed feedback InGaAsP diode, emits in the 1.4- (\mathrm{m}) region. A total of 12 lines were studied corresponding to rovibrational transitions within the (\nu_{1}) (+\nu_{3}) and (2 \nu_{1}) vibrational bands. A Voigt profile analysis of lineshape is used to infer both intensities and self-collision-broadening coefficients of the water vapor. Good agreement is found between the observed line intensities and those recently measured by Toth. These results are apparently the first published measurements of the broadening coefficient within this spectral range. (C) 1994

Academic Press, Inc.

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