Cavity ring-down spectroscopy for quantitative absorption measurements

  title={Cavity ring-down spectroscopy for quantitative absorption measurements},
  author={P. Zalicki and R. Zare},
  journal={Journal of Chemical Physics},
We examine under what conditions cavity ring-down spectroscopy ~CRDS! can be used for quantitative diagnostics of molecular species. We show that CRDS is appropriate for diagnostics of species whose absorption features are wider than the spacing between longitudinal modes of the optical cavity. For these species, the absorption coefficient can be measured by CRDS without a knowledge of the pulse characteristics provided that the cavity ring-down decay is exponential. We find that the… Expand

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