Picosecond time-resolved pure-rotational coherent anti-Stokes Raman spectroscopy in sooting flames

Christopher J. Kliewer; Yi Gao; Thomas Seeger; Johannes Kiefer; Brian D. Patterson; Thomas B. Settersten

doi:10.1016/j.proci.2010.05.067

Picosecond time-resolved pure-rotational coherent anti-Stokes Raman spectroscopy in sooting flames

Christopher J. Kliewer, Yi Gao, Thomas Seeger, Johannes Kiefer, Brian D. Patterson, Thomas B. Settersten

Engineering

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65 Citations (Scopus)

Abstract

The development of time-resolved dual-broadband pure-rotational coherent anti-Stokes Raman spectroscopy using picosecond laser pulses is investigated for use in the study of highly sooting flames. Axi-symmetric ethylene and propane diffusion flames were studied. Suppression of nonresonant and Raman resonant interference signals is demonstrated by delaying the probe pulse beyond the temporal envelope of the pump pulses, and these spectra are compared with those obtained using conventional polarization-based interference suppression techniques. Flame profiles for both temperature and the O-2 to N-2 ratio are obtained. Evaluated temperatures are corrected for delay-induced spectral heating and compared to published thermocouple measurements. Published by Elsevier Inc. on behalf of The Combustion Institute.

Original language	English
Pages (from-to)	831-838
Number of pages	8
Journal	Proceedings of the Combustion Institute
Volume	33
Issue number	1
Early online date	20 Sept 2010
DOIs	https://doi.org/10.1016/j.proci.2010.05.067
Publication status	Published - 2011

Keywords

time-resolved CARS
thermometry
soot
combustion

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title = "Picosecond time-resolved pure-rotational coherent anti-Stokes Raman spectroscopy in sooting flames",

abstract = "The development of time-resolved dual-broadband pure-rotational coherent anti-Stokes Raman spectroscopy using picosecond laser pulses is investigated for use in the study of highly sooting flames. Axi-symmetric ethylene and propane diffusion flames were studied. Suppression of nonresonant and Raman resonant interference signals is demonstrated by delaying the probe pulse beyond the temporal envelope of the pump pulses, and these spectra are compared with those obtained using conventional polarization-based interference suppression techniques. Flame profiles for both temperature and the O-2 to N-2 ratio are obtained. Evaluated temperatures are corrected for delay-induced spectral heating and compared to published thermocouple measurements. Published by Elsevier Inc. on behalf of The Combustion Institute.",

keywords = "time-resolved CARS, thermometry, soot, combustion",

author = "Kliewer, {Christopher J.} and Yi Gao and Thomas Seeger and Johannes Kiefer and Patterson, {Brian D.} and Settersten, {Thomas B.}",

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doi = "10.1016/j.proci.2010.05.067",

language = "English",

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TY - JOUR

T1 - Picosecond time-resolved pure-rotational coherent anti-Stokes Raman spectroscopy in sooting flames

AU - Kliewer, Christopher J.

AU - Gao, Yi

AU - Seeger, Thomas

AU - Kiefer, Johannes

AU - Patterson, Brian D.

AU - Settersten, Thomas B.

PY - 2011

Y1 - 2011

N2 - The development of time-resolved dual-broadband pure-rotational coherent anti-Stokes Raman spectroscopy using picosecond laser pulses is investigated for use in the study of highly sooting flames. Axi-symmetric ethylene and propane diffusion flames were studied. Suppression of nonresonant and Raman resonant interference signals is demonstrated by delaying the probe pulse beyond the temporal envelope of the pump pulses, and these spectra are compared with those obtained using conventional polarization-based interference suppression techniques. Flame profiles for both temperature and the O-2 to N-2 ratio are obtained. Evaluated temperatures are corrected for delay-induced spectral heating and compared to published thermocouple measurements. Published by Elsevier Inc. on behalf of The Combustion Institute.

AB - The development of time-resolved dual-broadband pure-rotational coherent anti-Stokes Raman spectroscopy using picosecond laser pulses is investigated for use in the study of highly sooting flames. Axi-symmetric ethylene and propane diffusion flames were studied. Suppression of nonresonant and Raman resonant interference signals is demonstrated by delaying the probe pulse beyond the temporal envelope of the pump pulses, and these spectra are compared with those obtained using conventional polarization-based interference suppression techniques. Flame profiles for both temperature and the O-2 to N-2 ratio are obtained. Evaluated temperatures are corrected for delay-induced spectral heating and compared to published thermocouple measurements. Published by Elsevier Inc. on behalf of The Combustion Institute.

KW - time-resolved CARS

KW - thermometry

KW - soot

KW - combustion

U2 - 10.1016/j.proci.2010.05.067

DO - 10.1016/j.proci.2010.05.067

M3 - Article

SN - 1540-7489

VL - 33

SP - 831

EP - 838

JO - Proceedings of the Combustion Institute

JF - Proceedings of the Combustion Institute

IS - 1

ER -

Picosecond time-resolved pure-rotational coherent anti-Stokes Raman spectroscopy in sooting flames

Abstract

Keywords

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