LAUSR

High-resolution broadband spectroscopy is crucial for studying complex molecular structures and accurately retrieving the line shapes associated with their energy levels. These line shapes carry vital information about a molecule's thermodynamic properties such as temperature, pressure, and concentration, which are desirable for $e.g.$ the petroleum industry, environmental monitoring, and medical breath analysis. This study shows how to obtain a molecular spectrum with about 80 kHz of resolution and 7.86 MHz of spectral sampling. The promising high-resolution technique allows complete gas characterization by simultaneously measuring thermodynamic properties and analyzing composition.