Dominik Hofer, Bernhard Zagar,
"Laser Speckle Simulation on a Rough Wetting Problem"
: Proceedings of the XX IMEKO World Congress, 9-2012, ISBN: 978-89-950000-5-2
Laser Speckle Simulation on a Rough Wetting Problem
Sprache des Titels:
Proceedings of the XX IMEKO World Congress
Computing numerical approximations of the Huygens-Fresnel principle in three dimensions is a rather time (and hardware) demanding task, but thanks to massive parallelization in GPGPU enabled graphics cards these computations can be sped up considerably. A newly developed software framework is capable to simulate a large portion of wave propagation related problems. It seems suited to generate laser speckle images for various real physical setups which were used to measure the surface roughness of sheet metal or the oil film thickness on top of it. This paper gives a short survey on rough wetting theory, it introduces the core parts of the software, and finally it shows some test cases using apertures and their known Fraunhofer diffraction patterns.