2018

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

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

E. F. Nasir, A. Farooq

CLEO: Applications and Technology, ATu4I. 5, 2018
E. F. Nasir, A. Farooq
Combustion diagnostics, laser sensors, optical sensing and sensors
2018



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.
DOI: 10.1364/CLEO_AT.2018.ATu4I.5