Diffracted Gaussian beam analysis of quasioptical multi-reflector systems

A novel approach for analysing quasi-optical multi-reflector systems is des cribed. The proposed analysis method expands an input he;un into a set of e lementary Gaussian beams that are propagated in a geometrical optics manner . The canonical problem of a 3D Gaussian beam incident upon a Kirchhoff hal f-screen complements the reflected beam by a Gaussian beam diffracted field term. The total output field is again expanded into a Gaussian beam expans ion to provide a modular technique.