Laser-induced fluorescence of NO can be used to sensitively measure the concentration of NO in laminar flames as well as in engines.

In collaboration with Dr. R. Farrow at Sandia National Laboratories, a picosecond laser was used to measured time-resolved LIF signals for quantitative concentration measurements in counterflow diffusion flames.

A tunable KrF excimer laser was used to image the distribution of NO in a spray-guided direct-injection gasoline engine. Simultaneous measurements of OH^*-chemiluminescence and cycle-resolved NO exhaust concentrations helped to characterize the role of fuel stratification on NO formation and emission in such engines.