Line-shape study of self-broadened O 2 transitions measured by Pound-Drever-Hall-locked frequency-stabilized cavity ring-down spectroscopy

We present high-sensitivity and high-spectral-resolution line-shape and line-intensity measurements of self-broadened O₂ b0.16em0ex¹Σg⁺(v=1)←X0.16em0ex³Σg^-(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.