Controlling light using mesoscale magnetic textures

Ioan Chioar; Merlin Pohlit; Christina Vantarak; Richard M. Rowan-Robinson; Björgvin Hjörvarsson; Evangelos Papaioannou; Vassilios Kapaklis

doi:10.1117/12.2568481

20 August 2020 Controlling light using mesoscale magnetic textures

Ioan Chioar, Merlin Pohlit, Christina Vantarak, Richard M. Rowan-Robinson, Björgvin Hjörvarsson, Evangelos Papaioannou, Vassilios Kapaklis

Author Affiliations +

Proceedings Volume 11470, Spintronics XIII; 1147040 (2020) https://doi.org/10.1117/12.2568481
Event: SPIE Nanoscience + Engineering, 2020, Online Only

Conference Poster

Abstract

We have explored the use of a magneto-optical diffraction grating, in the form of a YIG (Y₃Fe₅O₁₂) continuous film, as a mean of controlling light with mesoscale magnetic textures. The existence of a periodicity for the out-of-plane magnetic component opens up the possibility of using the film as a magneto-optical diffraction grating. For incident light linearly-polarized along the stripe direction, the Faraday rotation yields a polarization profile of the transmitted light characterized by a uniform distribution along the direction parallel to the stripes and a periodic phase-reversal texture along the corresponding orthogonal direction. The interference pattern resulting from the latter gives rise to magnetic Bragg peaks, in good agreement with the Fourier transform of the real-space magnetic domain texture recorded with Kerr microscopy. These results highlight the potential of controlling the scattering of light by employing and tailoring meso-scale magnetic textures.

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Ioan Chioar, Merlin Pohlit, Christina Vantarak, Richard M. Rowan-Robinson, Björgvin Hjörvarsson, Evangelos Papaioannou, and Vassilios Kapaklis "Controlling light using mesoscale magnetic textures", Proc. SPIE 11470, Spintronics XIII, 1147040 (20 August 2020); https://doi.org/10.1117/12.2568481

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