Coherent anti-Stokes Raman spectroscopy measurement of ethylene in combustion | Zendy

Andrew D. Cutler | Zendy; E. Gallo | Zendy; Luca Cantu | Zendy

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Coherent anti-Stokes Raman spectroscopy measurement of ethylene in combustion

Author(s) -

Andrew D. Cutler,

E. Gallo,

Luca Cantu

Publication year - 2017

Publication title -

applied optics

Language(s) - English

Resource type - Journals

ISSN - 0003-6935

DOI - 10.1364/ao.56.000e30

Subject(s) - raman spectroscopy , materials science , ethylene , spectroscopy , analytical chemistry (journal) , mole fraction , combustion , spectral line , optics , coherent anti stokes raman spectroscopy , coherent spectroscopy , raman scattering , chemistry , physics , biochemistry , chromatography , quantum mechanics , astronomy , catalysis

Width-increased dual-pump enhanced coherent anti-Stokes Raman spectroscopy (WIDECARS) has been developed for spatially and temporally resolved simultaneous measurement of temperature and mole fraction of most major species in ethylene-air flames. This paper describes a method to infer coherent anti-Stokes Raman spectroscopy complex susceptibility distributions of the ν 3 band of ethylene from WIDECARS spectra measured in heated mixtures of ethylene and air, and to use such distributions to fit experimental WIDECARS spectra in an ethylene-air flame. The method is used to measure mole fraction ethylene in a dual-mode supersonic combustor burning premixed ethylene and air with single-laser-shot precision (one standard deviation) of ±0.0025 (absolute).

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