Imaging of carbon monoxide distributions around igniting n-heptane droplets after excitation with a quantum cascade laser at 4.6 µm

Alfons Burkert; Wolfgang Triebel; Christian Eigenbrod

doi:10.1117/12.545467

1 September 2004 Imaging of carbon monoxide distributions around igniting n-heptane droplets after excitation with a quantum cascade laser at 4.6 μm

Alfons Burkert, Wolfgang Triebel, Christian Eigenbrod

Author Affiliations +

Proceedings Volume 5459, Optical Sensing; (2004) https://doi.org/10.1117/12.545467
Event: Photonics Europe, 2004, Strasbourg, France

Abstract

Carbon monoxide distributions around igniting n-heptane droplets were determined using absorption measurements. The emission of a quantum cascade laser at 4.6 μm was shaped to a parallel laser beam using a lens. For detection, a plane through the droplet, perpendicular to the laser beam was imaged onto the focal plane array of a mid-infrared camera. For background suppression a long-pass filter was mounted in the detection ray path. To estimate the detection sensitivity of the set-up, CO absorption in a reference cell was measured. In addition, CO transmission spectra were calculated for different temperatures based on HITRAN 2000 catalogue.

Citation Download Citation

Alfons Burkert, Wolfgang Triebel, and Christian Eigenbrod "Imaging of carbon monoxide distributions around igniting n-heptane droplets after excitation with a quantum cascade laser at 4.6 μm", Proc. SPIE 5459, Optical Sensing, (1 September 2004); https://doi.org/10.1117/12.545467

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