Measurement of the absorption line profiles of water vapour isotopomers at 1.39 {mu}m using the methods of diode laser spectroscopy

Journal Article · Sun Jul 31 04:00:00 EDT 2011 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2011V041N07ABEH014449· OSTI ID:21552647

Kuz'michev, A S; Nadezhdinskii, Aleksandr I; Ponurovskii, Ya Ya

The issues related to high-precision measurement of the absorption line profiles of water vapour and its isotopomers using the methods of diode laser spectroscopy in the near IR range aimed at the analysis and detection of greenhouse gases are considered. The absorption line shape of H{sub 2}{sup 16}O is investigated as a function of pressure of different buffer gases. The influence of the instrument function of the diode laser (DL) on the precision of measuring the line profile is studied. From fitting the profile of Doppler-broadened H{sub 2}{sup 16}O absorption line to a model profile the lasing line width of the DL with a fibre pigtail is determined. The frequencies and intensities of absorption lines of water isotopomers H{sub 2}{sup 16}O, H{sub 2}{sup 17}O, H{sub 2}{sup 18}O, and HDO are measured in the range of DL oscillation. Analytical spectral regions are chosen for distant probing of water vapour using an airborne lab. (laser spectroscopy)

• OSTI ID: 21552647
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 7 Vol. 41; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION
ACCURACY
CHARGED PARTICLES
DEUTERIUM COMPOUNDS
FIBERS
FLUIDS
GASES
GREENHOUSE GASES
HEAVY WATER
HYDROGEN COMPOUNDS
IONS
LASER SPECTROSCOPY
LINE WIDTHS
MOLECULAR IONS
OPTICAL FIBERS
OSCILLATIONS
OXYGEN COMPOUNDS
PRESSURE DEPENDENCE
SORPTION
SPECTROSCOPY
VAPORS
WATER
WATER VAPOR