The application of Laser Induced Fluorescence (LIF) for temperature measurements in water using a Nd:YAG laser is investigated. A natural convection problem is used to test the applicability of LIF in the temperature range of 20–60°C. The measured temperature field is compared with numerical results and the influences of shadowgraph effects on the measured temperature field are investigated. An accuracy of 1.7°C is attained if shadowgraph effects can be neglected. This only holds if correction for photobleaching and variation of laser power output is applied.
Coolen, M. C. J., Kieft, R. N., Rindt, C. C. M., & Steenhoven, van, A. A. (1999). Application of 2-D LIF temperature measurements in water using a Nd:YAG laser. Experiments in Fluids, 27(5), 420-426. https://doi.org/10.1007/s003480050367