H 2 O line shift measurements in the 1.06 μ region

Measurements of the pressure shifts coefficients for H 2 O absorption lines have been performed in the 9403 - 9414 cm -1 spectral region with H 2 , O 2 , Ar, Xe, Kr and air as foreign gases. The data on lines shifts coefficients have been obtained from analysis of the H 2 O-H 2 , H 2 O-O 2 , H 2 O-Ar, H 2 O-Xe H 2 O-Kr and H 2 O-Air absorption spectrum recorded at room temperature using Nd glass intracavity laser spectrometer with spectral resolution of 0.03 cm -1 and absorption sensitivity of 10 -8 cm -1 . The pressure of H 2 O was varied from 10 Torr to 20 Torr and the pressure of the buffer gases - from 0 to 1000 mbar. The values of the line shifts coefficients for 8 lines have been derived from the recorded spectra, they ranged from 0.009 cm -1 /atm to 0.069 cm -1 /atm. For each buffer gas a linear relationship of line shifts was measured.