Spin wave diffraction model for perpendicularly magnetized films

We present a near-field diffraction model for spin waves in perpendicularly magnetized films applicable any geometries of excitation fields. This relies on Kalinikos-Slavin formalism to express the dynamic susceptibility tensor k-space, and calculate patterns via inverse 2D-Fourier transform response functions. show an excellent quantitative agreement between our MuMax3 micro-magnetic simulations two different antennas. Our method benchmarks wave films, is readily future designs magnon beamforming interferometric devices.