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Intra-pulse Cavity Enhanced Measurements of Carbon Monoxide in a Rapid Compression Machine
Conference proceeding

Intra-pulse Cavity Enhanced Measurements of Carbon Monoxide in a Rapid Compression Machine

Ehson F. Nasir, Aamir Farooq and IEEE
2018 Conference on Lasers and Electro-Optics (CLEO), pp.1-2
05/2018

Abstract

Absorption Carbon monoxide Cavity resonators Combustion Measurement by laser beam Quantum cascade lasers Temperature measurement
A laser absorption sensor for carbon monoxide concentration was developed for combustion studies in a rapid compression machine using a pulsed quantum cascade laser near 4.89 μm. Cavity enhancement reduced minimum detection limit down to 2.4 ppm at combustion relevant conditions. Off-axis alignment and rapid intra-pulse down-chirp resulted in effective suppression of cavity noise.

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