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Proceedings Paper

Thermometry in pressurized sooting flames using laser-induced gratings
Author(s): Michael S. Brown; William L. Roberts
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Paper Abstract

We have performed non-intrusive thermometry in rich ethylene/air flames using a frequency measurement based on laser-induced gratings. Light from a cw probe beam is coherently scattered from a thermal or electrostrictive grating induced by the pulsed pump beams. The Doppler modulation of the signal beam is determined by the local speed of sound from which a temperature can be extracted. Soot particles, acting as blackbody absorbers do contribute to the signal.

Paper Details

Date Published: 21 November 1997
PDF: 12 pages
Proc. SPIE 3172, Optical Technology in Fluid, Thermal, and Combustion Flow III, (21 November 1997); doi: 10.1117/12.279755
Show Author Affiliations
Michael S. Brown, MetroLaser, Inc. (United States)
William L. Roberts, North Carolina State Univ. (United States)


Published in SPIE Proceedings Vol. 3172:
Optical Technology in Fluid, Thermal, and Combustion Flow III
Soyoung Stephen Cha; James D. Trolinger; Masaaki Kawahashi, Editor(s)

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