Supercontinuum laser absorption spectroscopy in the mid-infrared range for identification and concentration estimation of a multi-component atmospheric gas mixture

2011 ◽  
Author(s):  
Nicolas Cezard ◽  
Alexandre Dobroc ◽  
Guillaume Canat ◽  
Mathieu Duhant ◽  
William Renard ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Infrared Range ◽  
Gas Mixture ◽  
Laser Absorption Spectroscopy ◽  
Mid Infrared ◽  
Laser Absorption ◽  
Concentration Estimation ◽  
Supercontinuum Laser

Measurement of CO2 concentration based on supercontinuum laser absorption spectroscopy

2021 ◽  
Vol 17 (3) ◽  
pp. 176-182
Author(s):  
Hong-lian Li ◽  
Shuai Di ◽  
Wen-duo Li ◽  
Wen-jing Lü ◽  
Fan Wang ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Co2 Concentration ◽  
Laser Absorption Spectroscopy ◽  
Laser Absorption ◽  
Supercontinuum Laser

scholarly journals Stability Analysis of the Fluorescent Tracer 1-Methylnaphthalene for IC Engine Applications by Supercontinuum Laser Absorption Spectroscopy

Sensors ◽  
2020 ◽  
Vol 20 (10) ◽  
pp. 2871 ◽  
Author(s):  
Peter Fendt ◽  
Ulrich Retzer ◽  
Hannah Ulrich ◽  
Stefan Will ◽  
Lars Zigan
Keyword(s):  
Absorption Spectroscopy ◽  
Beam Steering ◽  
Single Mode ◽  
Signal Loss ◽  
Planar Imaging ◽  
Laser Absorption Spectroscopy ◽  
Double Pass ◽  
Ic Engine ◽  
Laser Absorption ◽  
Supercontinuum Laser

1-methylnaphthalene (1-MN) is a widely used laser-induced fluorescence (LIF) tracer for planar imaging of mixture formation and temperature distributions in internal combustion (IC) engines. As the LIF measurement results can be biased by partial tracer oxidation, the conversion of 1-MN and the base fuel isooctane is analyzed in a calibration cell. First, measurements using supercontinuum laser absorption spectroscopy (SCLAS) are presented in order to quantify the conversion by detection of the produced H2O mole fraction. A single mode fiber (SMF) coupled setup is presented, with the fiber core acting as entrance slit of a Czerny-Turner spectrometer. Dependencies on residence time and global air-fuel ratio are presented at pressures up to 1.5 MPa and temperatures up to 900 K, at which distinct tracer and fuel consumption is observed. Signal loss due to intense beam steering was partially compensated using a self-stabilizing double-pass setup with a retroreflector.

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