https://doi.org/10.1007/s10053-000-8807-z
Water vapor overtones pressure line broadening and shifting measurements
Istituto di Fisica Atomica e Molecolare del Consiglio
Nazionale delle Ricerche, via del Giardino 7, 56127 Pisa, Italy
Received:
7
June
1999
Revised:
20
July
1999
Published online: 13 August 2013
By using a spectrometer having as source a commercial
etherostructure AlxGa
As diode laser operating in
"free-running mode", line shape parameters of some water vapor
ro-vibrational overtones at 820-830 nm have been measured at room
temperature.
These weak absorption lines have been detected by using the wavelength
modulation spectroscopy technique with second-harmonic detection.
The broadening and shifting coefficients have been obtained by fitting
the collected second-harmonic absorption features while varying the
pressure of different foreign gases.
PACS: 33.70.Jg – Line and band widths, shapes, and shifts / 33.20.Ea – Infrared spectra / 07.57.Ty – Infrared spectrometers, auxiliary equipment, and techniques
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000
