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Broadband and highly sensitive comb-assisted cavity ring down spectroscopy of CO near 1.57 µm with sub-MHz frequency accuracy

Journal of Quantitative Spectroscopy and Radiative Transfer, ISSN: 0022-4073, Vol: 154, Page: 35-43
2015
  • 56
    Citations
  • 0
    Usage
  • 35
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    56
    • Citation Indexes
      56
  • Captures
    35

Article Description

A self-referenced frequency comb has been combined with a cavity ring down (CRD) spectrometer to achieve a sub-MHz accuracy on the derived positions of the absorption lines. The frequency emitted by the distributed feedback (DFB) laser diode used in the spectrometer was obtained from the frequency of its beat note with the closest mode of the frequency comb. This delivers excellent frequency accuracy over a broad spectral region with sensitivity (noise equivalent absorption) of 1×10 –11 cm −1 Hz −1/2.

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