Mid-infrared gas sensing using a photonic bandgap fiber as a gas cell

Nicolas Gayraud, Lukasz Kornaszewski, James M. Stone, Jonathan Knight, Derryck T. Reid, William N. MacPherson, Duncan P. Hand

Research output: Contribution to journalComment/debate

1 Citation (Scopus)

Abstract

We demonstrate methane sensing based on Fourier transform infrared spectroscopy using a hollow-core photonic bandgap fiber guiding in the mid-infrared and idler pulses from a femtosecond optical parametric oscillator. Transmission measurements are presented for several fibers, and sensing is demonstrated using a fiber whose bandgap overlaps the methane fundamental absorption lines. The gas filling process of the air core is described, and qualitative methane concentrations measurements to 1000 ppm (parts in 106) are reported. Operation down to 50 ppm based on our current experiment is predicted.
Original languageEnglish
Pages (from-to)1269-1277
Number of pages9
JournalSpectroscopy (Santa Monica)
Volume24
Issue number1
DOIs
Publication statusPublished - 20 Mar 2000

ASJC Scopus subject areas

  • Analytical Chemistry
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy

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