Work

Optical elements for anisotropic spin-wave propagation

Year: 2020

Type: article

Abstract: 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 spin-wave 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. Our results are valid for all three possible external magnetic field orientations and thus contribute to the growing field of spin-wave optics.

Source: Applied Physics Letters

DOI: 10.1063/5.0018519

Authors: M. Vogel, P. Pirro, B. Hillebrands, G. von Freymann

Institutions: University of Kaiserslautern, Fraunhofer Institute for Industrial Mathematics

Language: English

Topic: Magnetic properties of thin films

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Deutsche Forschungsgemeinschaft

Award: TRR 173: Spin+X: Der Spin in seiner kollektiven Umgebung