2-D absolute OH concentration profiles in atmospheric flames using planar LIF in a bi-directional laser beam configuration

M. Versluis*, N. Georgiev, L. Martinsson, M. Aldén, S. Kröll

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

55 Citations (Scopus)

Abstract

A technique has been developed to measure the absolute OH concentration at atmospheric pressures by using a combination of direct absorption and laser-induced fluorescence (LIF) detection. The technique is independent of collisions, because it uses laser beams in a bi-directional configuration, thereby eliminating collisional quenching. The absolute OH concentration is measured spatially resolved in two dimensions by using absorption on the Q1(6) rotational line in the A2Σ+(ν′ = 0) ← X2Π(ν′ = 0) band of OH at 309 nm. The requirements for obtaining a good signal-to-noise ratio for the technique are discussed and the possibilities of single-shot measurements are investigated.

Original languageEnglish
Pages (from-to)411-417
Number of pages7
JournalApplied physics B: Lasers and optics
Volume65
Issue number3
DOIs
Publication statusPublished - 1 Jan 1997
Externally publishedYes

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