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Photo report
Measuring the absorption spectra of gaseous molecules using a high-fine optical cavity
CRDS spectrometers using a high-fidelity optical cavity have been developed at the interdisciplinary physics laboratory (LIPhy). They are being used as part of the COMPLEAT project.
They are highly sensitive, making it possible to accurately record the gas-phase absorption spectra of various molecules of atmospheric and planetary interest, such as carbon dioxide (CO2), water vapour (H2O), methane (CH4) and dihydrogen (H2). These data are used in particular for satellite missions mapping the concentration of greenhouse gases or the radiation balance of planetary atmospheres. This report was produced and financed as part of the "Science Avec et Pour la Société" (SAPS) call for projects.
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