Cavity ring-down absorption spectrography based on filament-generated supercontinuum light.

@article{Stelmaszczyk2009CavityRA,
  title={Cavity ring-down absorption spectrography based on filament-generated supercontinuum light.},
  author={Kamil Stelmaszczyk and Philipp Rohwetter and Martin Fechner and Manuel Queisser and Adam Czyżewski and Tadeusz Stacewicz and Ludger W{\"o}ste},
  journal={Optics express},
  year={2009},
  volume={17 5},
  pages={
          3673-8
        }
}
We performed simultaneous, multispectral CRDS measurements that for the first time use the Supercontinuum light source. We called this approach Supercontinuum Cavity Ring-Down Spectrography (SC CRDSpectrography) and successfully applied it to measuring the absorption spectrum of NO2 gas at a concentration of 2 ppm. The extrapolated sensitivity of our setup was much greater, about 5 ppb. The ppb sensitivity level is comparable to this obtainable with single wavelength dye-lasers based CRDS… CONTINUE READING

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