Towards simultaneous calibration-free and ultra-fast sensing of temperature and species in the intrapulse mode

Handle URI:
http://hdl.handle.net/10754/347270
Title:
Towards simultaneous calibration-free and ultra-fast sensing of temperature and species in the intrapulse mode
Authors:
Chrystie, Robin S.M.; Nasir, Ehson F.; Farooq, Aamir ( 0000-0001-5296-2197 )
Abstract:
We report on exploiting the down-chirp phenomenon seen in quantum cascade lasers (QCLs), when modulated with long pulses, for the purpose of performing calibration-free and temporally resolved measurements. Intrapulse spectra of a native species (e.g., H2O), common to combustion environments, were generated near λ = 7.62 μm at repetition rates as high as 3.125 MHz. Two-line absorption spectroscopy was employed to infer calibration-free temperature from the chirp-induced intrapulse spectra. In this study, such temperature measurements were limited to rates of 250 kHz due to spectral distortion at higher repetition rates. We demonstrate the ease at which accurate temperatures and H2O compositions can be achieved using simple and compact QCLs operated in the intrapulse mode. The sensor is also applicable to other species, and has the potential to be integrated into commercial technologies. © 2014 The Combustion Institute.
KAUST Department:
Clean Combustion Research Center; Physical Sciences and Engineering (PSE) Division
Citation:
Towards simultaneous calibration-free and ultra-fast sensing of temperature and species in the intrapulse mode 2015, 35 (3):3757 Proceedings of the Combustion Institute
Publisher:
Elsevier BV
Journal:
Proceedings of the Combustion Institute
Issue Date:
2-Jul-2014
DOI:
10.1016/j.proci.2014.06.069
Type:
Article
ISSN:
15407489
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S1540748914002272
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorChrystie, Robin S.M.en
dc.contributor.authorNasir, Ehson F.en
dc.contributor.authorFarooq, Aamiren
dc.date.accessioned2015-03-30T06:27:39Zen
dc.date.available2015-03-30T06:27:39Zen
dc.date.issued2014-07-02en
dc.identifier.citationTowards simultaneous calibration-free and ultra-fast sensing of temperature and species in the intrapulse mode 2015, 35 (3):3757 Proceedings of the Combustion Instituteen
dc.identifier.issn15407489en
dc.identifier.doi10.1016/j.proci.2014.06.069en
dc.identifier.urihttp://hdl.handle.net/10754/347270en
dc.description.abstractWe report on exploiting the down-chirp phenomenon seen in quantum cascade lasers (QCLs), when modulated with long pulses, for the purpose of performing calibration-free and temporally resolved measurements. Intrapulse spectra of a native species (e.g., H2O), common to combustion environments, were generated near λ = 7.62 μm at repetition rates as high as 3.125 MHz. Two-line absorption spectroscopy was employed to infer calibration-free temperature from the chirp-induced intrapulse spectra. In this study, such temperature measurements were limited to rates of 250 kHz due to spectral distortion at higher repetition rates. We demonstrate the ease at which accurate temperatures and H2O compositions can be achieved using simple and compact QCLs operated in the intrapulse mode. The sensor is also applicable to other species, and has the potential to be integrated into commercial technologies. © 2014 The Combustion Institute.en
dc.publisherElsevier BVen
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S1540748914002272en
dc.rightsArchived with thanks to Proceedings of the Combustion Institute. Copyright © 2014 The Combustion Institute. Published by Elsevier Inc. All rights reserved.en
dc.titleTowards simultaneous calibration-free and ultra-fast sensing of temperature and species in the intrapulse modeen
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalProceedings of the Combustion Instituteen
dc.eprint.versionPost-printen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorChrystie, Robinen
kaust.authorNasir, Ehson Fawaden
kaust.authorFarooq, Aamiren
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