Development and Test of a Mobile CARS System to Measure Temperature Fluctuatios in Large Industrial Combustion Systems

Coherent Anti-Stokes Raman Scattering (CARS) is a well established laser-based technique for non-intrusive, spatially resolved, determination of temperature and its fluctuations in flames (see e.g. [1–3]). The strong signal achievable with pulsed lasers and the coherent, laser-like nature of the signal beam render CARS a useful tool for measurements in large-scale flames. In this contribution, a mobile CARS system is described which has been developed at the Paul Scherrer Institute. Its ability to measure temperature is illustrated by some typical results obtained in an industrial burner.