Measuring the concentration of minor species from the modulation dip of the nonresonant background of broad-band CARS spectra

Jae Won Hahn, S. N. Park, E. S. Lee, C. Rhee, K. T. Kang, S. H. Chung, C. Y. Choi, Y. D. Huh

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

A new technique for measuring the concentration of species from the modulation dip of the nonresonant background of broad-band CARS spectra has been proposed. To reduce the mode noise superimposed on the CARS spectra, we used a modeless laser generating amplified spontaneous emission as the Stokes beam of the broad-band CARS. The modulation dip induced by a minor species, CO in Ar, was numerically calculated and fitted as a function of CO concentration and temperature. We applied this technique in measuring CO concentration in a static cell and also the profile of CO concentration in a CH 4 /air premixed flame of a counterflow burner.

Original languageEnglish
Pages (from-to)710-714
Number of pages5
JournalApplied Spectroscopy
Volume47
Issue number6
DOIs
Publication statusPublished - 1993 Dec 1

Fingerprint

Carbon Monoxide
Modulation
broadband
modulation
Spontaneous emission
Fuel burners
counterflow
Lasers
premixed flames
burners
Air
spontaneous emission
methylidyne
Temperature
air
profiles
cells
lasers
temperature

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Spectroscopy

Cite this

Hahn, Jae Won ; Park, S. N. ; Lee, E. S. ; Rhee, C. ; Kang, K. T. ; Chung, S. H. ; Choi, C. Y. ; Huh, Y. D. / Measuring the concentration of minor species from the modulation dip of the nonresonant background of broad-band CARS spectra. In: Applied Spectroscopy. 1993 ; Vol. 47, No. 6. pp. 710-714.
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Measuring the concentration of minor species from the modulation dip of the nonresonant background of broad-band CARS spectra. / Hahn, Jae Won; Park, S. N.; Lee, E. S.; Rhee, C.; Kang, K. T.; Chung, S. H.; Choi, C. Y.; Huh, Y. D.

In: Applied Spectroscopy, Vol. 47, No. 6, 01.12.1993, p. 710-714.

Research output: Contribution to journalArticle

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AU - Hahn, Jae Won

AU - Park, S. N.

AU - Lee, E. S.

AU - Rhee, C.

AU - Kang, K. T.

AU - Chung, S. H.

AU - Choi, C. Y.

AU - Huh, Y. D.

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AB - A new technique for measuring the concentration of species from the modulation dip of the nonresonant background of broad-band CARS spectra has been proposed. To reduce the mode noise superimposed on the CARS spectra, we used a modeless laser generating amplified spontaneous emission as the Stokes beam of the broad-band CARS. The modulation dip induced by a minor species, CO in Ar, was numerically calculated and fitted as a function of CO concentration and temperature. We applied this technique in measuring CO concentration in a static cell and also the profile of CO concentration in a CH 4 /air premixed flame of a counterflow burner.

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