Applied Physics B

, Volume 71, Issue 2, pp 231–236

Open-path trace gas detection of ammonia based on cavity-enhanced absorption spectroscopy

  • R. Peeters
  • G. Berden
  • A. Apituley
  • G. Meijer

DOI: 10.1007/s003400000302

Cite this article as:
Peeters, R., Berden, G., Apituley, A. et al. Appl Phys B (2000) 71: 231. doi:10.1007/s003400000302

Abstract.

A compact open-path optical ammonia detector is developed. A tunable external-cavity diode laser operating at 1.5 μm is used to probe absorptions of ammonia via the cavity-enhanced absorption (CEA) technique. The detector is tested in a climate chamber. The sensitivity and linearity of this system are studied for ammonia and water at atmospheric pressure. A cluster of closely spaced rovibrational overtone and combination band transitions, observed as one broad absorption feature, is used for the detection of ammonia. On these molecular transitions a detection limit of 100 ppb (1 s) is determined. The ammonia measurements are calibrated independently with a chemiluminescence monitor. Compared to other optical open-path detection methods in the 1–2 μm region, the present result shows an improved sensitivity for contactless ammonia detection by over one order of magnitude. Using the same set-up, a detection limit of 100 ppm (1 s) is determined for the detection of water at atmospheric pressure.

PACS: 07.57.Ty; 07.07.Df; 07.88.+y; 33.20.Ea

Copyright information

© Springer-Verlag 2000

Authors and Affiliations

  • R. Peeters
    • 1
  • G. Berden
    • 1
  • A. Apituley
    • 3
  • G. Meijer
    • 1
  1. 1.Department of Molecular and Laser Physics, University of Nijmegen, Toernooiveld, NL-6525 ED Nijmegen, The Netherlands (Fax: +31-243/653-311, E-mail: rudyp@sci.kun.nl)NL
  2. 2.FOM-Institute for Plasma Physics Rijnhuizen, P.O. Box 1207, NL-3430 BE Nieuwegein, The NetherlandsNL
  3. 3.National Institute of Public Health and Environment (RIVM), P.O. Box 1, NL-3720 BA Bilthoven, The NetherlandsNL