We measure 2D distributions of species in flames e.g. by LIF with intensified CCD cameras after excitation by excimer lasers or the advanced disk laser (ADL). Excimer lasers are well established in combustion diagnostics. ADL is small compared to a double-tube excimer laser and provides higher pulse repetition rates (1-2 kHz).

Here we present measurements of formaldehyde distributions after excitation with ADL as an example. The experimental set-up shows a pre-mixing chamber with two typical formaldehyde distributions. In addition, droplets of unburned fuel can be seen.

In the table below, molecules which can be excited with ADL are summarized. An ADL system is available in our laboratory as well as in the drop tower of Bremen (ZARM, integrated in a drop capsule).