Amplitude-based detection of trace species in reacting flows is often problematic. We introduce a means of monitoring the concentration of an absorbing species through detection of the phase shift of a transient grating signal.
© 2004 Optical Society of America
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.1740) Instrumentation, measurement, and metrology : Combustion diagnostics
(290.0290) Scattering : Scattering
(290.5900) Scattering : Scattering, stimulated Brillouin
M. S. Brown, T. R. Meyer, and J. R. Gord, "Trace-species measurements from phase shift of transient-grating signals," in Laser Applications to Chemical and Environmental Analysis, Technical Digest (Optical Society of America, 2004), paper TuE11.
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