作为重要的大气污染物，CO 气体浓度的变化是衡量大气污染状况的重要指标。针对大气污染组分CO 高灵敏红外光谱测量需要，研究了高分辨红外光谱特性参数精确测定方法，采用室温工作、窄线宽分布反馈式(DFB)半导体激光器作为检测光源，精确测量了CO 气体在1.56 μm 附近的高分辨吸收光谱，利用Voigt 线形模型对吸收谱线进行拟合，获取了CO 分子各吸收线的中心波长、谱线强度、压力自加宽系数等参量，并与理论结果进行了比较。

As one of the main air pollutants, the concentration change of carbon monoxide is the important indicator of air quality. For the need of high sensitive infrared spectroscopy detection on CO, which is one of the most important atmospheric pollution components, the characteristics of high resolution absorption spectroscopy detection method are studied, and the high resolution absorption spectra of CO near 1.56 μm are recorded accurately by using a distributed feed-back (DFB) diode laser, which has narrow line width and works at room temperature as light source. The Voigt profile model is used for absorption spectral lines fitting, and the center wavelengths, line intensities and self-broadening coefficients of CO lines are precisely measured and compared with theoretical results.