About us
Members of the Laboratory of Ultra-accurate Optical Metrology and Spectroscopy (LUMOS) conduct research on the shapes of spectral lines of molecules in the visible and infrared range. The application of spectroscopy in optical cavities provides an accurate frequency axis and a negligibly small instrumental function. These methods are particularly useful in measuring weak lines, which are important in the study of the atmosphere, in the detection of trace amounts of gases and in fundamental research. Cavity ring-down spectroscopy (CRDS) has been used and developed since 2009. Recently, two new methods of optical cavity spectroscopy have been developed based on measurements of absorption and dispersion in the frequency domain. These are cavity mode width spectroscopy (CMWS) and cavity mode dispersion spectroscopy (CMDS).
The Group also develops broadband spectroscopy methods based on the use of optical frequency combs. They allow obtaining spectra with resolutions orders of magnitude better than the traditional broadband techniques, including the FTIR spectrometry. The new methods are used in studies of basic intermolecular interactions, in the dynamics of chemical reactions and in the research motivated by atmospheric (climate change) and astrophysical applications.
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