Sensitive and ultra-fast species detection using pulsed cavity ringdown spectroscopy

Awad Alquaity; Et-touhami Es-sebbar; Aamir Farooq

doi:10.1364/OE.23.007217

Sensitive and ultra-fast species detection using pulsed cavity ringdown spectroscopy

Awad Alquaity, Et-touhami Es-sebbar, Aamir Farooq

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17 Scopus citations

Abstract

Pulsed cavity ringdown spectroscopy (CRDS) is used to develop a novel, ultra-fast, high-sensitivity diagnostic for measuring species concentrations in shock tube experiments. The diagnostic is demonstrated by monitoring trace concentrations of ethylene in the mid-IR region near 949.47 cm-1. Each ringdown measurement is completed in less than 1 μs and the time period between successive pulses is 10 μs. The high sensitivity diagnostic has a noise-equivalent detection limit of 1.08 x 10-5 cm-1 which enables detection of 15 ppm ethylene at fuel pyrolysis conditions (1845 K and 2 bar) and 294 ppb ethylene under ambient conditions (297 K and 1 bar). To our knowledge, this is the first successful application of the cavity ringdown method to the measurement of species time-histories in a shock tube. © 2015 OSA.

Original language	English (US)
Pages (from-to)	7217
Journal	Optics Express
Volume	23
Issue number	6
DOIs	https://doi.org/10.1364/OE.23.007217
State	Published - Mar 10 2015

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: Research reported in this paper was funded by King Abdullah University of Science and Technology (KAUST).

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10.1364/OE.23.007217

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title = "Sensitive and ultra-fast species detection using pulsed cavity ringdown spectroscopy",

abstract = "Pulsed cavity ringdown spectroscopy (CRDS) is used to develop a novel, ultra-fast, high-sensitivity diagnostic for measuring species concentrations in shock tube experiments. The diagnostic is demonstrated by monitoring trace concentrations of ethylene in the mid-IR region near 949.47 cm-1. Each ringdown measurement is completed in less than 1 μs and the time period between successive pulses is 10 μs. The high sensitivity diagnostic has a noise-equivalent detection limit of 1.08 x 10-5 cm-1 which enables detection of 15 ppm ethylene at fuel pyrolysis conditions (1845 K and 2 bar) and 294 ppb ethylene under ambient conditions (297 K and 1 bar). To our knowledge, this is the first successful application of the cavity ringdown method to the measurement of species time-histories in a shock tube. {\textcopyright} 2015 OSA.",

author = "Awad Alquaity and Et-touhami Es-sebbar and Aamir Farooq",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: Research reported in this paper was funded by King Abdullah University of Science and Technology (KAUST).",

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doi = "10.1364/OE.23.007217",

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T1 - Sensitive and ultra-fast species detection using pulsed cavity ringdown spectroscopy

AU - Alquaity, Awad

AU - Es-sebbar, Et-touhami

AU - Farooq, Aamir

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: Research reported in this paper was funded by King Abdullah University of Science and Technology (KAUST).

PY - 2015/3/10

Y1 - 2015/3/10

N2 - Pulsed cavity ringdown spectroscopy (CRDS) is used to develop a novel, ultra-fast, high-sensitivity diagnostic for measuring species concentrations in shock tube experiments. The diagnostic is demonstrated by monitoring trace concentrations of ethylene in the mid-IR region near 949.47 cm-1. Each ringdown measurement is completed in less than 1 μs and the time period between successive pulses is 10 μs. The high sensitivity diagnostic has a noise-equivalent detection limit of 1.08 x 10-5 cm-1 which enables detection of 15 ppm ethylene at fuel pyrolysis conditions (1845 K and 2 bar) and 294 ppb ethylene under ambient conditions (297 K and 1 bar). To our knowledge, this is the first successful application of the cavity ringdown method to the measurement of species time-histories in a shock tube. © 2015 OSA.

AB - Pulsed cavity ringdown spectroscopy (CRDS) is used to develop a novel, ultra-fast, high-sensitivity diagnostic for measuring species concentrations in shock tube experiments. The diagnostic is demonstrated by monitoring trace concentrations of ethylene in the mid-IR region near 949.47 cm-1. Each ringdown measurement is completed in less than 1 μs and the time period between successive pulses is 10 μs. The high sensitivity diagnostic has a noise-equivalent detection limit of 1.08 x 10-5 cm-1 which enables detection of 15 ppm ethylene at fuel pyrolysis conditions (1845 K and 2 bar) and 294 ppb ethylene under ambient conditions (297 K and 1 bar). To our knowledge, this is the first successful application of the cavity ringdown method to the measurement of species time-histories in a shock tube. © 2015 OSA.

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UR - https://www.osapublishing.org/abstract.cfm?URI=oe-23-6-7217

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DO - 10.1364/OE.23.007217

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JO - Optics Express

JF - Optics Express

IS - 6

ER -

Sensitive and ultra-fast species detection using pulsed cavity ringdown spectroscopy

Abstract

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