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Development of multipoint vibrational coherent anti-Stokes Raman spectroscopy for flame applications

Afzelius, Mikael LU ; Bengtsson, Per-Erik LU orcid ; Bood, Joakim LU ; Brackmann, Christian LU and Kurtz, A (2006) In Applied Optics 45(6). p.1177-1186
Abstract
A novel technique for coherent anti-Stokes Raman spectroscopy (CARS) measurements in multiple points is presented. In a multipass cavity the pump and Stokes laser beams are multiply reflected and refocused into a measurement volume with an adjustable number of separated points along a line. This optical arrangement was used in a vibrational CARS setup with planar BOXCARS phase-matching configuration. The CARS spectra from spatially separated points were recorded at different heights on a CCD camera. Measurements of temperature profiles were carried out in the burned gas zone of a premixed one-dimensional flame to demonstrate the applicability of this method for temperature measurements in high-temperature regions. The ability to measure in... (More)
A novel technique for coherent anti-Stokes Raman spectroscopy (CARS) measurements in multiple points is presented. In a multipass cavity the pump and Stokes laser beams are multiply reflected and refocused into a measurement volume with an adjustable number of separated points along a line. This optical arrangement was used in a vibrational CARS setup with planar BOXCARS phase-matching configuration. The CARS spectra from spatially separated points were recorded at different heights on a CCD camera. Measurements of temperature profiles were carried out in the burned gas zone of a premixed one-dimensional flame to demonstrate the applicability of this method for temperature measurements in high-temperature regions. The ability to measure in flames with strong density gradients was demonstrated by simultaneous measurements of Q-branch spectra of N-2 and CO in a Wolfhard-Parker burner flame. Interference phenomena found in multipoint spectra are discussed, and possible solutions are proposed. Merits and limitations of the technique are discussed. (c) 2006 Optical Society of America. (Less)
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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Optics
volume
45
issue
6
pages
1177 - 1186
publisher
Optical Society of America
external identifiers
  • wos:000235628000013
  • pmid:16523780
  • scopus:33645516244
ISSN
2155-3165
language
English
LU publication?
yes
id
45824d50-f9b2-4826-a260-3882f5f1004b (old id 417292)
alternative location
http://www.opticsinfobase.org/abstract.cfm?URI=ao-45-6-1177
date added to LUP
2016-04-01 12:21:22
date last changed
2021-08-10 03:35:13
@article{45824d50-f9b2-4826-a260-3882f5f1004b,
  abstract     = {A novel technique for coherent anti-Stokes Raman spectroscopy (CARS) measurements in multiple points is presented. In a multipass cavity the pump and Stokes laser beams are multiply reflected and refocused into a measurement volume with an adjustable number of separated points along a line. This optical arrangement was used in a vibrational CARS setup with planar BOXCARS phase-matching configuration. The CARS spectra from spatially separated points were recorded at different heights on a CCD camera. Measurements of temperature profiles were carried out in the burned gas zone of a premixed one-dimensional flame to demonstrate the applicability of this method for temperature measurements in high-temperature regions. The ability to measure in flames with strong density gradients was demonstrated by simultaneous measurements of Q-branch spectra of N-2 and CO in a Wolfhard-Parker burner flame. Interference phenomena found in multipoint spectra are discussed, and possible solutions are proposed. Merits and limitations of the technique are discussed. (c) 2006 Optical Society of America.},
  author       = {Afzelius, Mikael and Bengtsson, Per-Erik and Bood, Joakim and Brackmann, Christian and Kurtz, A},
  issn         = {2155-3165},
  language     = {eng},
  number       = {6},
  pages        = {1177--1186},
  publisher    = {Optical Society of America},
  series       = {Applied Optics},
  title        = {Development of multipoint vibrational coherent anti-Stokes Raman spectroscopy for flame applications},
  url          = {http://www.opticsinfobase.org/abstract.cfm?URI=ao-45-6-1177},
  volume       = {45},
  year         = {2006},
}