Optical Diagnostics

​The KAUST shock tubes and RCM are coupled with the state-of-the-art laser diagnostics to get a complete picture of the chemistry and chemical kinetics of the fuels being studied. Some of these diagnostics include​:

1) Tunable cw UV dye-laser system for OH measurement
2) Ultrafast pulsed Ti-Sapphire UV laser system
3) HeNe laser systems at 632 nm and 3.3 um
4) Telecommunications grade fiber-coupled laser in near-IR
5) Extended-NIR lasers near 2.5 - 3.0 um
6) Difference-frequency-generation (DFG) laser system near 3.2 - 3.6 um
7) Quantum cascade (QC) lasers from 4 - 12 um 

Currently, we are carrying out a campaign where multiple species are measured simultaneously using a variety of laser systems. The species being measured include CO, CO2, H2O, C2H4, OH, C2H2, and CH4. The picture below shows optical setup at the shock tube end-wall for these various diagnostics: