Optical excitation of multiple standing spin modes in 3D optomagnonic nanocavities

Daria O. Ignatyeva; Denis M. Krichevsky; Dolendra Karki; Anton Kolosvetov; Polina E. Zimnyakova; Alexander N. Shaposhnikov; Vladimir N. Berzhansky; Miguel Levy; Alexander I. Chernov; Vladimir I. Belotelov

arXiv · 2310.01974

Optical excitation of multiple standing spin modes in 3D optomagnonic nanocavities

Daria O. Ignatyeva·Denis M. Krichevsky·Dolendra Karki·Anton Kolosvetov·Polina E. Zimnyakova·Alexander N. Shaposhnikov·Vladimir N. Berzhansky·Miguel Levy·Alexander I. Chernov·Vladimir I. Belotelov

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Abstract

We report the first experimental observation of multiple standing spin modes in 3D optomagnonic nanocavity formed by nanometer-sized iron-garnet nanocylinder. We show that launching of standing spin modes is achieved due to a high confinement of the optically generated effective magnetic field caused by the localized optical resonance. Quantization and spin-wave mode inhomogeneity is achieved in each of the three spatial dimensions. The presented approach opens new horizons of 3D optomagnonics by combining nanophotonic and magnonic functionalities within a single nanocavity.

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Daria O. Ignatyeva, Denis M. Krichevsky, Dolendra Karki, Anton Kolosvetov, Polina E. Zimnyakova, Alexander N. Shaposhnikov, Vladimir N. Berzhansky, Miguel Levy, Alexander I. Chernov, Vladimir I. Belotelov. 2023-10-03. Optical excitation of multiple standing spin modes in 3D optomagnonic nanocavities. https://arxiv.org/abs/2310.01974

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