Fabrication and characterization of linear diffusers based on concave micro lens arrays.
We present a new approach of beam homogenizing elements based on a statistical array of concave cylindrical microlens arrays. Those elements are used to diffuse light in only one direction and can be employed together with fly's eye condensers to generate a uniform flat top line for high power coherent light sources. Conception, fabrication and characterization for such 1D diffusers are presented in this paper.
Bitterli
Roland
R
Optics and Photonics Technology Laboratory, Ecole Politechnique Federale de Lausanne, A.-L. Breguet 2, Neuchâtel, Switzerland. roland.bitterli@epfl.ch
Scharf
Toralf
T
Herzig
Hans-Peter
HP
Noell
Wilfried
W
de Rooij
Nico
N
Bich
Andreas
A
Roth
Sylvain
S
Weible
Kenneth J
KJ
Voelkel
Reinhard
R
Zimmermann
Maik
M
Schmidt
Michael
M
D003198:Computer Simulation; D004058:Diffusion; D004867:Equipment Design; D054018:Lasers, Excimer; D007909:Lenses; D008855:Microscopy, Electron, Scanning; D008962:Models, Theoretical; D055095:Optics and Photonics / Q000295:instrumentation*; D012822:Silicon Dioxide
D012822:Silicon Dioxide