Line-shape study of self-broadened O2transitions measured by Pound-Drever-Hall-locked frequency-stabilized cavity ring-down spectroscopy

Abstract

We present high-sensitivity and high-spectral-resolution line-shape and line-intensity measurements of self-broadened O${}_{2}$ $b{\phantom{\rule{0.16em}{0ex}}}^{1}{\ensuremath{\Sigma}}_{g}^{+}(v=1)\ensuremath{\leftarrow}X{\phantom{\rule{0.16em}{0ex}}}^{3}{\ensuremath{\Sigma}}_{g}^{\ensuremath{-}}(v=0)$ band transitions measured using the Pound-Drever-Hall-locked frequency-stabilized cavity ring-down spectroscopy technique. We give collisional broadening parameters and take into account the line-narrowing effects described by Dicke narrowing or the speed dependence of collisional broadening. We compare line intensities measured with relative uncertainties below 0.4% to data available in the HITRAN spectroscopic database.