Open AccessMid-infrared methane detection in a photonic bandgap fiber using a broadband optical parametric oscillator
Author(s) -
Łukasz Kornaszewski,
Nicolas Gayraud,
James M. Stone,
William N. MacPherson,
A.K. George,
J.C. Knight,
Duncan Paul Hand,
Derryck T. Reid
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.011219
Subject(s) - materials science , optical parametric oscillator , optics , femtosecond , methane , optical fiber , lithium niobate , broadband , optoelectronics , absorption (acoustics) , photonic crystal fiber , laser , physics , wavelength , ecology , composite material , biology
We demonstrate methane sensing using a photonic bandgap fiber-based gas cell and broadband idler pulses from a periodically-poled lithium niobate femtosecond optical parametric oscillator. The hollow core of the fiber was filled with a methane:nitrogen mixture, and Fourier transform spectroscopy was used to measure transmission spectra in the 3.15-3.35 mum methane absorption region. The method has applications in gas sensing for remote or hazardous environments and potentially at very low concentrations.