ICLAS of HDO between 13,020 and 14,115cm−1

Abstract

The high resolution absorption spectrum of monodeuterated water, HDO, has been recorded by Intracavity Laser Absorption Spectroscopy (ICLAS) in the 13020-14115 cm-1 region dominated by the 4 3 band. The achieved noise equivalent absorption ( min~ 10-9 cm-1) allowed detecting transitions with line strengths as small as 2×10-27 cm/molecule which is about 10 times lower than the smallest line intensities previously detected in the region.

Cavity ring down spectroscopy of water vapour near 750 nm: a test of the HITRAN2020 and W2020 line lists

“…In our analysis, 253 HD 16 O transitions of the 2 2 +3 3 and  1 +3 3 bands were identified. The corresponding line positions are in good agreement with previous studies [10,[30][31][32]. Compared to the ICLAS study of Ref.…”

“…Compared to the ICLAS study of Ref. [32], the position differences  = | TW - Ref. [32] | are larger than 0.01 cm -1 for only 17 transitions.…”

“…Absorption lines of the HD 16 O isotopologue were reported in Refs. [10,[30][31][32] in the region of interest. In our analysis, 253 HD 16 O transitions of the 2 2 +3 3 and  1 +3 3 bands were identified.…”

Water vapor absorption in the region of the oxygen A-band near 760 nm

“…The corresponding line positions are in good agreement with the results of Refs. [26][27][28][29]. The position differences  = | Meas - Ref | are larger than 0.01 cm -1 for only four lines with maximum deviation of 0.017 cm -1 for the 22+33 6 1 5 -7 1 6 transition at 13,165.4746 cm -1 .…”

“…In addition, the lines of the 22+33 6 1 6 -707 and 1+33 743 -844 transitions are presently resolved (corresponding positions are 13,171.9145 and 13,171.9535 cm -1 , respectively) while a position value of 13,171.946 cm -1 was given in Refs. [26,27,29] for the unresolved doublet.…”