Applied Physics B

, Volume 106, Issue 2, pp 251–255

Continuous wave, distributed feedback diode laser based sensor for trace-gas detection of ethane

  • K. Krzempek
  • R. Lewicki
  • L. Nähle
  • M. Fischer
  • J. Koeth
  • S. Belahsene
  • Y. Rouillard
  • L. Worschech
  • F. K. Tittel
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DOI: 10.1007/s00340-011-4857-9

Cite this article as:
Krzempek, K., Lewicki, R., Nähle, L. et al. Appl. Phys. B (2012) 106: 251. doi:10.1007/s00340-011-4857-9

Abstract

The development of a continuous wave (CW), thermoelectrically cooled (TEC), distributed feedback (DFB) laser diode based spectroscopic trace-gas sensor for ultra-sensitive and selective ethane (C2H6) concentration measurements is reported. The sensor platform used tunable diode laser absorption spectroscopy (TDLAS) based on a 2f wavelength modulation (WM) detection technique. TDLAS was performed with a 100 m optical path length astigmatic Herriott cell. For an interference free C2H6 absorption line located at 2976.8 cm−1 a 1σ minimum detection limit of 240 pptv (part per trillion by volume) with a 1 second lock-in amplifier time constant was achieved. In addition, reliable and long-term sensor performance was obtained when operating the sensor in an absorption line locked mode.

Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • K. Krzempek
    • 1
  • R. Lewicki
    • 2
  • L. Nähle
    • 3
  • M. Fischer
    • 3
  • J. Koeth
    • 3
  • S. Belahsene
    • 4
  • Y. Rouillard
    • 4
  • L. Worschech
    • 5
  • F. K. Tittel
    • 2
  1. 1.Laser & Fiber Electronics GroupWroclaw University of TechnologyWroclawPoland
  2. 2.Department of Electrical and Computer EngineeringRice UniversityHoustonUSA
  3. 3.Nanoplus GmbH ObererGerbrunnGermany
  4. 4.Institut d’Electronique du Sud, UMR 5214 CNRSUniversité Montpellier 2MontpellierFrance
  5. 5.Technische PhysikUniversity of WürzburgWürzburgGermany

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