We study the diffraction of Damon-Eshbach-type spin waves incident on a one-dimensional grating realized by micro slits in a thin permalloy film. By means of time-resolved scanning Kerr microscopy we observe unique diffraction patterns behind the grating which exhibit replications of the spin-wave field at the slits. We show that these spin-wave images, with details finer than the wavelength of the incident Damon-Eshbach spin wavelength, arise from the strongly anisotropic spin wave dispersion.
@article{arxiv.1108.5883,
title = {Spin Wave Diffraction and Perfect Imaging of a Grating},
author = {S. Mansfeld and J. Topp and K. Martens and J. N. Toedt and W. Hansen and D. Heitmann and S. Mendach},
journal= {arXiv preprint arXiv:1108.5883},
year = {2015}
}