We present new measurements of the oxygen B-band transitions in the P branch performed with the cavity ring-down spectroscopy (CRDS) and the cavity mode-width spectroscopy (CMWS) techniques. Systematic deviations on the line intensities observed comparing to our previously published data are explained. We reached agreement on unperturbed line positions at the 40 kHz level and on the line intensities below 0.2% for measurements performed with the above two techniques. With significantly increased spectra signal-to-noise ratio we simultaneously observe the speed dependence of collisional broadening and shifting as well as Dicke narrowing in the pressure range as low as 1.1 kPa.

我们提出了使用腔衰荡光谱 (CRDS) 和腔模式宽度光谱 (CMWS) 技术对 P 分支中的氧 B 带跃迁进行的新测量。解释了与我们以前发布的数据相比观察到的线强度的系统偏差。对于使用上述两种技术进行的测量，我们就 40 kHz 电平的未扰动线路位置和低于 0.2% 的线路强度达成了一致。随着光谱信噪比的显着增加，我们同时观察到在低至 1.1 kPa 的压力范围内碰撞展宽和移动以及 Dicke 变窄的速度依赖性。