Saturated-Absorption Cavity Ring-Down (SCAR) for High-Sensitivity and High-Resolution Molecular Spectroscopy in the Mid IR

  • P. CancioEmail author
  • I. Galli
  • S. Bartalini
  • G. Giusfredi
  • D. Mazzotti
  • P. De Natale
Part of the Springer Series in Optical Sciences book series (SSOS, volume 179)


A non-conventional cavity ring-down spectroscopic technique is described. When the light intensity is well above the saturation level for the molecular species inside a high-finesse cavity, each single cavity ring-down event simultaneously measures both the background losses from the cavity mirrors and the linear absorption from the gas. Such a differential scheme acting on very short time scales (a few tens of microseconds) can improve the sensitivity of conventional cavity ring-down by more than one order of magnitude, while achieving sub-Doppler resolution, if needed. Applications to optical detection of very rare molecular species like radiocarbon dioxide and resolved molecular hyperfine structure in 17O12C16O are presented.


Accelerator Mass Spectrometry Cavity Loss Optical Frequency Comb Cavity Ring Down Spectroscopy Cavity Ring Down 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • P. Cancio
    • 1
    Email author
  • I. Galli
    • 1
  • S. Bartalini
    • 1
  • G. Giusfredi
    • 1
  • D. Mazzotti
    • 1
  • P. De Natale
    • 1
  1. 1.Istituto Nazionale di OtticaConsiglio Nazionale delle RicercheSesto FiorentinoItaly

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