Degenerate four-wave mixing measurement in iodine vapor
2008
Degenerate four-wave mixing (DFWM) is a nonlinear optical process that has been developed as a
detective tool for making quantitative measurements of gas dynamic properties in the various environments.
This technique can be used to measure temperature and species concentration in both flames and plasma
environments. The resulting coherent signal beam makes DFWM particularly attractive for luminous and
harsh environments, compared to incoherent techniques, such as laser-induced fluorescence (LIF). Forward
DFWM with self-stability of spilt-beam system has been demonstrated in iodine vapor. It's found that there
exists no LIF because of collision quenching at atmospheric pressure and room temperature. But observed
vivid DFWM spectroscopy (554-556nm) of iodine vapor at 0 o C and room temperature. Furthermore,
DFWM can probe non-fluorescing species. We describe a novel advanced sensor method for measuring
temperature of gas flows using DFWM. This technique without suffering of severe quenching problems at
atmospheric pressure is of importance to trace atom, molecular and radical in combustion diagnosis.
Keywords:
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
0
References
0
Citations
NaN
KQI