Ultrafast all-optical manipulation of magnetization in ferromagnetic thin films

Yongmin Liu

doi:10.1117/12.2647640

31 January 2023 Ultrafast all-optical manipulation of magnetization in ferromagnetic thin films

Yongmin Liu

Proceedings Volume 12477, International Workshop on Thin Films for Electronics, Electro-Optics, Energy and Sensors 2022; 124770V (2023) https://doi.org/10.1117/12.2647640
Event: International Workshop on Thin Films for Electronics, Electro-Optics, Energy and Sensors, 2022, Boston, Massachusetts, United States

Abstract

We report ultrafast all-optical manipulation of magnetization in ferromagnetic Co/Pt thin films, which are covered by an Au capping layer or Au nanoparticles. In the first configuration, we observe robust all-optical helicity-dependent switching of magnetization under different conditions. In the second configuration, the strong plasmonic resonance of Au nanoparticles results in an 18.5% decrease in the minimum laser power required to manipulate the magnetization.

Citation Download Citation

Yongmin Liu "Ultrafast all-optical manipulation of magnetization in ferromagnetic thin films", Proc. SPIE 12477, International Workshop on Thin Films for Electronics, Electro-Optics, Energy and Sensors 2022, 124770V (31 January 2023); https://doi.org/10.1117/12.2647640

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