QCL-Based Dual-Comb Spectrometer for Multi-Species Measurements at High Temperatures and High Pressures

Guangle Zhang; Raphael Horvath; Dapeng Liu; Markus Geiser; Aamir Farooq

doi:10.3390/s20123602

QCL-Based Dual-Comb Spectrometer for Multi-Species Measurements at High Temperatures and High Pressures

Guangle Zhang, Raphael Horvath, Dapeng Liu, Markus Geiser, Aamir Farooq

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Rapid multi-species sensing is an overarching goal in time-resolved studies of chemical kinetics. Most current laser sources cannot achieve this goal due to their narrow spectral coverage and/or slow wavelength scanning. In this work, a novel mid-IR dual-comb spectrometer is utilized for chemical kinetic investigations. The spectrometer is based on two quantum cascade laser frequency combs and provides rapid (4 µs) measurements over a wide spectral range (~1175–1235 cm−1). Here, the spectrometer was applied to make time-resolved absorption measurements of methane, acetone, propene, and propyne at high temperatures (>1000 K) and high pressures (>5 bar) in a shock tube. Such a spectrometer will be of high value in chemical kinetic studies of future fuels.

Original language	English (US)
Pages (from-to)	3602
Journal	Sensors
Volume	20
Issue number	12
DOIs	https://doi.org/10.3390/s20123602
State	Published - Jun 29 2020

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This research was funded by the Office of Sponsored Research at King Abdullah University of Science and Technology (KAUST).

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10.3390/s20123602

https://repository.kaust.edu.sa/bitstream/10754/663939/1/Articlefile1.pdf

Cite this

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title = "QCL-Based Dual-Comb Spectrometer for Multi-Species Measurements at High Temperatures and High Pressures",

abstract = "Rapid multi-species sensing is an overarching goal in time-resolved studies of chemical kinetics. Most current laser sources cannot achieve this goal due to their narrow spectral coverage and/or slow wavelength scanning. In this work, a novel mid-IR dual-comb spectrometer is utilized for chemical kinetic investigations. The spectrometer is based on two quantum cascade laser frequency combs and provides rapid (4 µs) measurements over a wide spectral range (~1175–1235 cm−1). Here, the spectrometer was applied to make time-resolved absorption measurements of methane, acetone, propene, and propyne at high temperatures (>1000 K) and high pressures (>5 bar) in a shock tube. Such a spectrometer will be of high value in chemical kinetic studies of future fuels.",

author = "Guangle Zhang and Raphael Horvath and Dapeng Liu and Markus Geiser and Aamir Farooq",

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AU - Zhang, Guangle

AU - Horvath, Raphael

AU - Liu, Dapeng

AU - Geiser, Markus

AU - Farooq, Aamir

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This research was funded by the Office of Sponsored Research at King Abdullah University of Science and Technology (KAUST).

PY - 2020/6/29

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N2 - Rapid multi-species sensing is an overarching goal in time-resolved studies of chemical kinetics. Most current laser sources cannot achieve this goal due to their narrow spectral coverage and/or slow wavelength scanning. In this work, a novel mid-IR dual-comb spectrometer is utilized for chemical kinetic investigations. The spectrometer is based on two quantum cascade laser frequency combs and provides rapid (4 µs) measurements over a wide spectral range (~1175–1235 cm−1). Here, the spectrometer was applied to make time-resolved absorption measurements of methane, acetone, propene, and propyne at high temperatures (>1000 K) and high pressures (>5 bar) in a shock tube. Such a spectrometer will be of high value in chemical kinetic studies of future fuels.

AB - Rapid multi-species sensing is an overarching goal in time-resolved studies of chemical kinetics. Most current laser sources cannot achieve this goal due to their narrow spectral coverage and/or slow wavelength scanning. In this work, a novel mid-IR dual-comb spectrometer is utilized for chemical kinetic investigations. The spectrometer is based on two quantum cascade laser frequency combs and provides rapid (4 µs) measurements over a wide spectral range (~1175–1235 cm−1). Here, the spectrometer was applied to make time-resolved absorption measurements of methane, acetone, propene, and propyne at high temperatures (>1000 K) and high pressures (>5 bar) in a shock tube. Such a spectrometer will be of high value in chemical kinetic studies of future fuels.

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QCL-Based Dual-Comb Spectrometer for Multi-Species Measurements at High Temperatures and High Pressures

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