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arXiv · 2206.14696

Spin-Wave Optics in YIG by Ion-Beam Irradiation

Martina Kiechle·Adam Papp·Simon Mendisch·Valentin Ahrens·Matthias Golibrzuch·Gary H. Bernstein·Wolfgang Porod·Gyorgy Csaba·Markus Becherer
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Abstract

We demonstrate direct focused ion beam (FIB) writing as an enabling technology for realizing spin-wave-optics devices. It is shown that ion-beam irradiation changes the characteristics of YIG films on a submicron scale in a highly controlled way, allowing to engineer the magnonic index of refraction adapted to desired applications. This technique does not physically remove material, and allows rapid fabrication of high-quality architectures of modified magnetization in magnonic media with minimal edge damage (compared to more common techniques such as etching or milling). By experimentally showing magnonic versions of a number of optical devices (lenses, gratings, Fourier-domain processors) we envision this technology as the gateway to building magnonic computing devices that rival their optical counterparts in their complexity and computational power.

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Martina Kiechle, Adam Papp, Simon Mendisch, Valentin Ahrens, Matthias Golibrzuch, Gary H. Bernstein, Wolfgang Porod, Gyorgy Csaba, Markus Becherer. 2022-06-29. Spin-Wave Optics in YIG by Ion-Beam Irradiation. https://arxiv.org/abs/2206.14696

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