Applied Physics B

, 85:391

Detection of formaldehyde using off-axis integrated cavity output spectroscopy with an interband cascade laser

  • J.H. Miller
  • Y.A. Bakhirkin
  • T. Ajtai
  • F.K. Tittel
  • C.J. Hill
  • R.Q. Yang


A continuous-wave, mid-infrared, distributed feedback, interband cascade laser was used to detect and quantify formaldehyde (H2CO) using off-axis, integrated cavity output spectroscopy in gas mixtures containing ≈1–25 parts in 106 by volume (ppmV) of H2CO. Analysis of the spectral measurements indicates that a H2CO concentration of 150 parts in 109 by volume (ppbV) would produce a spectrum with a signal to noise ratio of 3 for a data acquisition time of 3 s. This is a relevant sensitivity level for formaldehyde monitoring of indoor air, occupational settings, and on board spacecraft in long duration missions in particular as the detection sensitivity improves with the square root of the data acquisition time.


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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • J.H. Miller
    • 1
  • Y.A. Bakhirkin
    • 2
  • T. Ajtai
    • 2
  • F.K. Tittel
    • 2
  • C.J. Hill
    • 3
  • R.Q. Yang
    • 3
  1. 1.Department of ChemistryThe George Washington UniversityWashingtonUSA
  2. 2.Department of Electrical and Computer EngineeringRice UniversityHoustonUSA
  3. 3.Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadenaUSA

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