Physics
Scientific paper
Jun 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997jqsrt..57..795n&link_type=abstract
Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 57, issue 6, pp. 795-809
Physics
23
Water Vapor: Laboratory Spectra, Water Vapor: Infrared Spectra, Water Vapor: Line Profiles
Scientific paper
Two distributed-feedback InGaAsP diode lasers have been used to perform spectrally resolved measurements of H2O transitions near 1.4 μm. Line-shape analyses of the recorded absorption spectra yielded the temperature-dependent self-, N2-, and CO2-broadened half-widths. Room-temperature (296 K) half-widths for eight rovibrational transitions in the ν1+ν3 and 2ν1 vibrational bands were determined from measurements recorded in a variable pathlength (0.4-10 m) multi-pass cell. The temperature dependence of the half-widths for four of the transitions were determined from measurements conducted in a heated static cell over a temperature range of 400-1000 K. The room-temperature half-widths and temperature exponents were determined to an average accuracy of +8%/-6% and ±9%, respectively, and are in good agreement with theoretical calculations and published half-widths for transitions with the same rotational quantum numbers.
Baer D. S.
Chou S. I.
Hanson Ronald K.
Nagali V.
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