Application of a beam homogenizer to planar laser diagnostics.
The first application of a microlens array beam homogenizer to planar laser measurement techniques in combustion diagnostics is demonstrated. The beam homogenizing properties of two microlens arrays in combination with a Fourier lens for widespread applications are presented. An uniform line profile with very little temporal fluctuations of the spatial intensity distribution was generated resulting in a significant reduction of measurement noise and enabling an easier and faster signal processing.
Pfadler
Sebastian
S
Lehrstuhl für Technische Thermodynamik, Friedrich-Alexander Universität Erlangen-Nürnberg, Am Weichselgarten 8, D-91058 Erlangen, Germany. sp@ltt.uni-erlangen.de
Beyrau
Frank
F
Löffler
Micha
M
Leipertz
Alfred
A