Non-degenerate magneto-optical pump-probe spectroscopy of thermal and nonthermal spin dynamics in magnetic and magnetoplasmonic materials with sub-15 fs time resolution

Tlek Tapani; Haifeng Lin; Nils Henriksson; Nicolò Maccaferri

doi:10.1117/12.2665673

5 June 2023 Non-degenerate magneto-optical pump-probe spectroscopy of thermal and nonthermal spin dynamics in magnetic and magnetoplasmonic materials with sub-15 fs time resolution

Tlek Tapani, Haifeng Lin, Nils Henriksson, Nicolò Maccaferri

Author Affiliations +

Proceedings Volume 12569, Nonlinear Optics and Applications XIII; 1256905 (2023) https://doi.org/10.1117/12.2665673
Event: SPIE Optics + Optoelectronics, 2023, Prague, Czech Republic

Abstract

Photonics and spintronics represent a great promise to overcome the fundamental limits of electronics since light and spins are simultaneously much faster and less dissipative of electrons. In this framework, the quest for energy-efficient data processing and storage functionalities led great attention to the field of femtomagnetism, the study and control of magnetism using ultrashort light pulses. However, our knowledge of magnetic phenomena and ultrafast light-matter interactions in nanoscale magnetic materials is extremely limited. In this work, we introduce a time-resolved magnetooptical pump-probe spectroscopy scheme enabling to access both the thermal and nonthermal spin (and charge) dynamics with sub-15 fs temporal resolution. We test the capabilities of our system on archetypical magnetic and magnetoplasmonic materials, such as Ni thin films and Ni nanodisks.

Conference Presentation

Citation Download Citation

Tlek Tapani, Haifeng Lin, Nils Henriksson, and Nicolò Maccaferri "Non-degenerate magneto-optical pump-probe spectroscopy of thermal and nonthermal spin dynamics in magnetic and magnetoplasmonic materials with sub-15 fs time resolution", Proc. SPIE 12569, Nonlinear Optics and Applications XIII, 1256905 (5 June 2023); https://doi.org/10.1117/12.2665673

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