Whereas conventional 2D laser measurement apparatus typically operate with frame rates of around 10 Hz, frame rates of 1000 Hz and more can be achieved with novel laser systems based on diode-pumped solid-state lasers or disk lasers in combination with CMOS cameras. Such kilohertz measurement systems are applied at the Institute for measurements using laser-induced fluorescence and particle image velocimetry. The main focus is on investigating transient combustion processes such as ignition and flame extinction or, more generally, the interaction between flames and flow field [1-5]. High frame rates allow a precise temporal tracking of the processes, thus enabling the causes of such combustion phenomena to be identified.