Waveletlike basis function approach to the propagation of paraxial beams
A semianalytical method is described for calculating the diffraction integral for paraxial propagation through an optical system. The field at the input plane is represented by a linear superposition of nearly Gaussian basis functions that keep a simple analytical form under ABCD propagation. The coefficients of the superposition are obtained by a numerical fit. The flexibility of the basis functions makes the method well suited to dealing with sharp local variations of the input field.
Potvliege
RM
Department of Physics, University of Durham, United Kingdom. R.M.Potvliege@durham.ac.uk