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LAsers, Molecules and Environment

The LAME team has a long tradition in the innovation and development of techniques for high sensitivity absorption spectroscopy, motivated by applications ranging from the spectroscopic characterization of extremely weak transitions in molecules of atmospheric or planetological interest, to the quantification of trace concentrations and isotopic ratios in gas samples for environemental, geophysical and medical applications. Our experimental set-ups have in common that they are all based on high finesse optical cavities. These cavities are composed of highly reflective mirrors and enable the trapping of photons, coming from a light source (generally a laser) in resonance with the cavity modes, during a significant time span (e.g., 100 ┬Ás). The enhanced interaction of trapped photons with gas inside the cavity allows for highly sensitive absorption measurements.

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