Applied Physics B

, Volume 79, Issue 7, pp 799–803

Formaldehyde sensor using interband cascade laser based quartz-enhanced photoacoustic spectroscopy

  • M. Horstjann
  • Y.A. Bakhirkin
  • A.A. Kosterev
  • R.F. Curl
  • F.K. Tittel
  • C.M. Wong
  • C.J. Hill
  • R.Q. Yang
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DOI: 10.1007/s00340-004-1659-3

Cite this article as:
Horstjann, M., Bakhirkin, Y., Kosterev, A. et al. Appl Phys B (2004) 79: 799. doi:10.1007/s00340-004-1659-3
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Abstract

A novel continuous-wave mid-infrared distributed feedback interband cascade laser was utilized to detect and quantify formaldehyde (H2CO) using quartz-enhanced photoacoustic spectroscopy. The laser was operated at liquid-nitrogen temperatures and provided single-mode output powers of up to 12 mW at 3.53 μm (2832.5 cm-1). The noise equivalent (1σ) detection sensitivity of the sensor was measured to be 2.2×10-8 cm-1 W (Hz)-1/2 for H2CO in ambient air, which corresponds to a detection limit of 0.6 parts in 106 by volume (ppmv) for a 10 s sensor time constant and 3.4 mW laser power delivered to the sensor module.

Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  • M. Horstjann
    • 1
  • Y.A. Bakhirkin
    • 1
  • A.A. Kosterev
    • 1
  • R.F. Curl
    • 1
  • F.K. Tittel
    • 1
  • C.M. Wong
    • 2
  • C.J. Hill
    • 2
  • R.Q. Yang
    • 2
  1. 1.Rice Quantum InstituteRice UniversityHoustonUSA
  2. 2.Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadenaUSA

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