Line-shape study of CO perturbed by N with mid-infrared frequency comb-based Fourier-transform spectroscopy
arXiv:2402.10509 · doi:10.1016/j.measurement.2024.114273
Abstract
We developed a mid-infrared optical frequency comb-based Fourier-transform spectrometer and performed a line-shape study of the fundamental vibrational band of CO perturbed by N, which is crucial for atmospheric science and astronomical observations. The comb-based FTS enabled us to measure the whole vibrational band with high resolution and precision at several pressures between 10 and 400 Torr. Observed absorption profiles were fitted with the speed-dependent Voigt profile. Collisional broadening, speed-dependent collisional width and shift coefficients are derived. The reliability of our results is established from considerations of systematic errors and comparison with previous studies.
14 pages, 8 figures
References in corpus (9)
- High Coherence Mid-Infrared Dual Comb Spectroscopy Spanning 2.6 to 5.2 microns
- Phase-stabilized, 1.5-W frequency comb at 2.8 to 4.8 micron
- Recommended isolated-line profile for representing high-resolution spectroscopic transitions (IUPAC Technical Report)
- Surpassing the Path-Limited Resolution of a Fourier Transform Spectrometer with Frequency Combs
- Optical Frequency Comb Fourier Transform Spectroscopy with Sub-Nominal Resolution - Principles and Implementation
- Detection of CO in Triton's atmosphere and the nature of surface-atmosphere interactions
- High-power frequency comb source tunable from 2.7 to 4.2 μm based on difference frequency generation pumped by an Yb-doped fiber laser
- High-power ultrafast Yb:fiber laser frequency combs using commercially available components and basic fiber tools
- Broadband calibration-free cavity-enhanced complex refractive index spectroscopy using a frequency comb