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Related Experiment Videos

Deep-ultraviolet cavity ringdown spectroscopy.

M Sneep1, S Hannemann, E J van Duijn

  • 1Laser Centre, Department of Physics and Astronomy, Vrije Universiteit, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands. sneep@nat.vu.nl

Optics Letters
|July 6, 2004
PubMed
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Cavity ringdown spectroscopy now operates at 197-204 nm for sensitive gas detection. This advancement enables high-resolution measurements of oxygen

Area of Science:

  • Spectroscopy
  • Optical Sensing
  • Atmospheric Chemistry

Background:

  • Cavity ringdown spectroscopy (CRDS) is a highly sensitive optical detection technique.
  • Previous CRDS applications were limited in the ultraviolet (UV) wavelength range.
  • Extending CRDS to shorter UV wavelengths is crucial for studying specific molecular transitions.

Purpose of the Study:

  • To extend the application range of cavity ringdown spectroscopy (CRDS) to the 197-204 nm wavelength region.
  • To demonstrate the utility of the extended CRDS system for gas-phase extinction measurements.
  • To achieve high-resolution spectral recordings of key atmospheric molecules.

Main Methods:

  • Utilized a novel narrowband Fourier-transform-limited laser source.
  • Adapted the cavity ringdown spectroscopy technique for operation in the 197-204 nm range.

Related Experiment Videos

  • Performed gas-phase extinction measurements on carbon dioxide (CO2), sulfur hexafluoride (SF6), and oxygen (O2).

    • Main Results:

    • Successfully extended cavity ringdown spectroscopy to the 197-204 nm wavelength range.
    • Achieved sensitive gas-phase extinction measurements for CO2, SF6, and O2.
    • Obtained high-resolution recordings of the Schumann-Runge bands (0,0), (1,0), and (2,0) in O2.

    Conclusions:

    • The extended UV-CRDS system demonstrates significant potential for sensitive molecular detection in this spectral region.
    • The technique is suitable for precise gas-phase measurements and high-resolution spectroscopy.
    • This advancement opens new possibilities for atmospheric studies and chemical analysis.