Fourier Transforms in VirtualLab Fusion

Author: Frank Wyrowski
Monday, August 16, 2021
LightTrans International GmbH

Fourier transforms connect representations of functions in different domains. By that they enable the selection of modeling and evaluation techniques in the most favorable domain in terms of computation speed and compactness of techniques. In physical optics, modeling can be done in time and frequency domain which are connected via a one-dimensional Fourier transform per spatial position. In VirtualLab Fusion this technique is used for the modeling of ultrashort pulses. The two-dimensional Fourier transform between the space and k-domain is of general importance in physical-optics modeling and is discussed in more detail in what follows.