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Advances in Diode Laser Absorption Sensors for Combustion and Propulsion

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Abstract

Laser-based spectroscopic diagnostics provide unique capabilities for in situ sensing of reactive flows, and as a result such sensors are utilized increasingly in the development and control of advanced combustion systems. This presentation will provide an overview of recent progress in the evolution of tunable diode laser (TDL) absorption, a line-of-sight technique with the capability of fast or even continuous measurements of multiple flowfield quantities including species, temperature and mass flux. The rapid growth in applications of TDL methods to practical combustors and propulsion systems will be highlighted with examples including gas turbine combustors, IC engines, pulse detonation engines, scramjets, and hypersonic tunnels.

© 2006 Optical Society of America

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