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Optical elements for anisotropic spin-wave propagation
Applied Physics Letters ( IF 3.5 ) Pub Date : 2020-06-29 , DOI: 10.1063/5.0018519
M. Vogel 1 , P. Pirro 1 , B. Hillebrands 1 , G. von Freymann 1, 2
Affiliation  

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.

中文翻译:

用于各向异性自旋波传播的光学元件

我们执行微磁模拟来研究自旋波束通过自旋波光学元件的传播。尽管磁介质中的自旋波传播具有很强的各向异性,但我们使用轴棱镜来激发自旋波 Bessel-Gaussian 光束和梯度折射率透镜来聚焦自旋波,类似于在各向同性介质中使用光的传统光学。此外,我们展示了使用梯度折射率透镜的自旋波傅立叶光学。我们的结果对所有三种可能的外部磁场方向都有效,因此有助于自旋波光学领域的发展。
更新日期:2020-06-29
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