Infrared laser-absorption sensing for combustion gases

CS Goldenstein, RM Spearrin, JB Jeffries… - Progress in Energy and …, 2017 - Elsevier
Infrared laser-absorption spectroscopy (IR-LAS) sensors play an important role in
diagnosing and characterizing a wide range of combustion systems. Of all the laser …

Analysis of calibration-free wavelength-scanned wavelength modulation spectroscopy for practical gas sensing using tunable diode lasers

K Sun, X Chao, R Sur, CS Goldenstein… - Measurement …, 2013 - iopscience.iop.org
A novel strategy has been developed for analysis of wavelength-scanned, wavelength
modulation spectroscopy (WMS) with tunable diode lasers (TDLs). The method simulates …

A review of molecular tagging measurement technique

F Li, H Zhang, B Bai - Measurement, 2021 - Elsevier
Molecular tagging measurement technique is an advanced non-intrusive visualization
approach which uses the molecules as the tagging and tracking materials. This technique …

Scanned-wavelength-modulation-spectroscopy sensor for CO, CO2, CH4 and H2O in a high-pressure engineering-scale transport-reactor coal gasifier

R Sur, K Sun, JB Jeffries, JG Socha, RK Hanson - Fuel, 2015 - Elsevier
In-situ laser-absorption measurements of CO, CO 2, CH 4 and H 2 O were demonstrated in
the synthesis gas products of coal gasification (here called syngas) from an engineering …

Real-time in situ multi-parameter TDLAS sensing in the reactor core of an entrained-flow biomass gasifier

A Sepman, Y Ögren, Z Qu, H Wiinikka… - Proceedings of the …, 2017 - Elsevier
Tunable diode laser absorption spectroscopy (TDLAS) was used to measure several
important process parameters at two different locations inside the reactor of an atmospheric …

Two-dimensional temperature and carbon dioxide concentration profiles in atmospheric laminar diffusion flames measured by mid-infrared direct absorption …

X Liu, G Zhang, Y Huang, Y Wang, F Qi - Applied Physics B, 2018 - Springer
We present a multi-line flame thermometry technique based on mid-infrared direct
absorption spectroscopy of carbon dioxide at its v_3 v 3 fundamental around 4.2 μm that is …

Cavity-enhanced measurements of benzene for environmental monitoring

M Mhanna, G Zhang, N Kunnummal… - IEEE Sensors …, 2020 - ieeexplore.ieee.org
A mid-infrared laser-based sensor is designed and demonstrated for trace detection of
benzene at ambient conditions. The sensor is based on a distributed feedback inter-band …

TDLAS-based sensors for in situ measurement of syngas composition in a pressurized, oxygen-blown, entrained flow coal gasifier

R Sur, K Sun, JB Jeffries, RK Hanson, RJ Pummill… - Applied Physics B, 2014 - Springer
Tunable diode laser absorption spectroscopy based in situ sensors for CO (2.33 μm), CO 2
(2.02 μm), CH 4 (2.29 μm) and H 2 O (1.35 μm) were deployed in a pilot-scale (1 ton/day) …

Compact optical probe for flame temperature and carbon dioxide using interband cascade laser absorption near 4.2 µm

JJ Girard, RM Spearrin, CS Goldenstein… - Combustion and …, 2017 - Elsevier
An in situ thermometry technique was developed for low-pressure flames based on laser
absorption spectroscopy of nascent carbon dioxide. Discrete, rovibrational lines within the ν …

Wavelength-modulation spectroscopy near 1.4 µm for measurements of H2O and temperature in high-pressure and-temperature gases

CS Goldenstein, RM Spearrin, IA Schultz… - Measurement …, 2014 - iopscience.iop.org
The development, validation and demonstration of a two-color tunable diode laser (TDL)
absorption sensor for measurements of temperature and H 2 O in high-pressure and high …