Applied Physics B

, Volume 110, Issue 2, pp 187–194

Measurements of CO2 in a multipass cell and in a hollow-core photonic bandgap fiber at 2 μm

  • J. A. Nwaboh
  • J. Hald
  • J. K. Lyngsø
  • J. C. Petersen
  • O. Werhahn
Article

DOI: 10.1007/s00340-012-5047-0

Cite this article as:
Nwaboh, J.A., Hald, J., Lyngsø, J.K. et al. Appl. Phys. B (2013) 110: 187. doi:10.1007/s00340-012-5047-0

Abstract

Recently, hollow-core photonic bandgap fibers (HC-PBFs) for use in the 2 μm wavelength region have become available. We have employed tunable diode laser absorption spectroscopy (TDLAS) to quantify CO2 in nitrogen, injected into a HC-PBF. Our spectrometer contains both an HC-PBF-based absorption cell and an astigmatic Herriott multipass gas cell. The Herriott cell was used for comparison with the HC-PBF cell. The HC-PBF cell’s sensitivity and limit of detection were calculated to be 3.5×10−4 cm−1⋅Hz−1/2 and 59 ppm⋅m, respectively. To substantiate the spectrometer performance, a measurement was done in the Herriott cell probing a reference gas mixture with nominal 400 μmol/mol CO2 in N2. The spectrometric results were in good agreement with the reference value. The relative standard uncertainty of the spectrometric result was found to be at the ±2 % level.

Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • J. A. Nwaboh
    • 1
  • J. Hald
    • 2
  • J. K. Lyngsø
    • 3
  • J. C. Petersen
    • 2
  • O. Werhahn
    • 1
  1. 1.Physikalisch-Technische BundesanstaltBraunschweigGermany
  2. 2.Danish Fundamental MetrologyKongens LyngbyDenmark
  3. 3.NKT Photonics A/SBirkerødDenmark

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