We perform micromagnetic simulations to investigate the propagation of spin-wave beams through spin-wave optical elements. Despite spin-wave propagation in magnetic media being strongly anisotropic, we use axicons to excite spinwave Bessel-Gaussian beams and gradient-index lenses to focus spin waves in analogy to conventional optics with light in isotropic media. Moreover, we demonstrate spin-wave Fourier optics using gradient-index lenses. These results contribute to the growing field of spin-wave optics.
@article{arxiv.1906.02301,
title = {Spin-Wave Optical Elements: Towards Spin-Wave Fourier Optics},
author = {Marc Vogel and Burkard Hillebrands and Georg von Freymann},
journal= {arXiv preprint arXiv:1906.02301},
year = {2020}
}