Laser-Induced Fluorescence Detection of Hot Molecular Oxygen in Flames Using an Alexandrite Laser

Johannes Kiefer, Bo Zhou, Johan Zetterberg, Zhongshan Li, Marcus Alden

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The use of an alexandrite laser for laser-induced fluorescence (LIF) spectroscopy and imaging of molecular oxygen in thermally excited vibrational states is demonstrated. The laser radiation after the third harmonic generation was used to excite the B-X (0-7) band at 257 nm in the Schumann-Runge system of oxygen. LIF emission was detected between 270 and 380 nm, revealing distinct bands of the transitions from B(0) to highly excited vibrational states in the electronic ground state, X (v > 7). At higher spectral resolution, these bands reveal the common P- and R-branch line splitting. Eventually, the proposed LIF approach was used for single-shot imaging of the two-dimensional distribution of hot oxygen molecules in flames.
Original languageEnglish
Pages (from-to)1266-1273
Number of pages8
JournalApplied Spectroscopy
Volume68
Issue number11
DOIs
Publication statusPublished - 1 Nov 2014

Fingerprint

alexandrite
Molecular oxygen
laser induced fluorescence
flames
Fluorescence
vibrational states
Lasers
oxygen
lasers
Oxygen
Imaging techniques
spectral resolution
shot
Spectral resolution
harmonic generations
Fluorescence spectroscopy
Laser radiation
Harmonic generation
laser beams
Ground state

Keywords

  • Schumann-Runge
  • Oxygen
  • Ultraviolet
  • Planar laser-induced fluorescence
  • PLIF

Cite this

Laser-Induced Fluorescence Detection of Hot Molecular Oxygen in Flames Using an Alexandrite Laser. / Kiefer, Johannes; Zhou, Bo; Zetterberg, Johan; Li, Zhongshan; Alden, Marcus.

In: Applied Spectroscopy, Vol. 68, No. 11, 01.11.2014, p. 1266-1273.

Research output: Contribution to journalArticle

Kiefer, Johannes ; Zhou, Bo ; Zetterberg, Johan ; Li, Zhongshan ; Alden, Marcus. / Laser-Induced Fluorescence Detection of Hot Molecular Oxygen in Flames Using an Alexandrite Laser. In: Applied Spectroscopy. 2014 ; Vol. 68, No. 11. pp. 1266-1273.
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AB - The use of an alexandrite laser for laser-induced fluorescence (LIF) spectroscopy and imaging of molecular oxygen in thermally excited vibrational states is demonstrated. The laser radiation after the third harmonic generation was used to excite the B-X (0-7) band at 257 nm in the Schumann-Runge system of oxygen. LIF emission was detected between 270 and 380 nm, revealing distinct bands of the transitions from B(0) to highly excited vibrational states in the electronic ground state, X (v > 7). At higher spectral resolution, these bands reveal the common P- and R-branch line splitting. Eventually, the proposed LIF approach was used for single-shot imaging of the two-dimensional distribution of hot oxygen molecules in flames.

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