AI 中文总结
该研究采用基于光梳的傅里叶变换光谱学，测量CO-Ar系统中CO基频带的绝对频率与碰撞线形参数，所得数据可验证HITRAN数据库可靠性并为相关建模提供实验基准。
AI 中文摘要
我们报告了利用基于光梳的傅里叶变换光谱学（comb-based Fourier-transform spectroscopy）完成的CO基频带的绝对频率测量结果，以及高精度的Ar诱导碰撞线形参数。采用稳定的中红外光梳光源并仔细抑制技术噪声，获得了高质量光谱。通过充分利用光梳光谱学优势的分析方法，实现了精确的频率校准和稳健的多线拟合，多数跃迁的谱线中心拟合误差低于0.00001 cm⁻¹。测得的跃迁频率与HITRAN数据库的偏差在0.0001 cm⁻¹以内，验证了该半经验数据库的可靠性。采用速度依赖的Voigt轮廓进行多线拟合，得到了约40条P支和R支谱线的碰撞参数，为CO-Ar线形建模提供了可靠的实验基准。
英文摘要
We report absolute frequency measurements of the CO fundamental band, together with high-precision Ar-induced collisional line-shape parameters using comb-based Fourier-transform spectroscopy. High-quality spectra were obtained with a stable mid-IR optical frequency comb source and careful suppression of technical noise. By applying analysis methods that fully exploit the advantages of optical frequency comb spectroscopy, precise frequency calibration and robust multi-line fitting were achieved, resulting line-center fitting errors below 0.00001 cm$^{-1}$ for most transitions. The measured transition frequencies agree with HITRAN within 0.0001 cm$^{-1}$, supporting the reliability of the semi-empirical database. Multi-line fits using a speed-dependent Voigt profile yield collisional parameters for approximately 40 P- and R-branch lines, providing a reliable experimental benchmark for CO-Ar line-shape modeling.
Comments14 pages, 8 figures in main manuscript. 5 pages of supplemental document with 2 figures and 2 tables
