Detection of NO in a spark-ignition research engine using degenerate four-wave mixing

Journal article

We report the first application of degenerate four-wave mixing (DFWM) to combustion diagnostics in a methane-fuelled internal combustion research engine. Combustion-generated NO in the spark-ignited engine was detected using scanning narrowband DFWM in a modified forward folded BOXCARS geometry. The resulting spectra of the X2∏-A2 ∑+ (0, 0) band at 226 nm display an excellent signal-to-noise ratio. Extension of the technique to different engine operating conditions and to time-resolved multiplex DFWM is discussed. © Springer-Verlag 2001.

Authors: Grant, A; Ewart, P; Stone, C

• Publication status: Published
• Journal: APPLIED PHYSICS B-LASERS AND OPTICS
• Volume: 74
• Issue: 1
• Pages: 105-110
• Publication date: 2002-01-01
• DOI: 10.1007/s003400100740
• EISSN: 1432-0649
• ISSN: 0946-2171
• Language: English