In this Letter, we present and experimentally validate the first direct hyperspectral dual-comb gas imaging system operating in the mid-infrared region. This method provides an unmatched combination of super-fine spectral characterization and high temporal resolution without the need for thermal contrast between the target molecules and the background. In a proof-of-concept experiment, the system has allowed us to perform precision hyperspectral imaging of butane in the 3.4 µm band with a time resolution of 1 s.

中文翻译：

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中红外直接高光谱双梳气成像

在这封信中，我们介绍并实验验证了在中红外地区运行的首个直接高光谱双梳状气体成像系统。该方法提供了超精细光谱表征和高时间分辨率的无与伦比的组合，而无需在目标分子和背景之间进行热对比。在概念验证实验中，该系统使我们能够在3.4 µm波段中以1 s的时间分辨率对丁烷进行精确的高光谱成像。