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31 March 2020 Study of ultrafast magnetism by THz emission spectroscopy (Conference Presentation)
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Abstract
In laser-excited ferromagnetic heterostructures, both ultrafast local magnetization dynamics and spin-transport processes can lead to a THz emission. Here, we demonstrate that the THz emission spectroscopy is a powerful tool to investigate ultrafast magnetization dynamics in laser-excited magnetic systems. The polarity of emitted THz can be used to distinguish which process, local or non-local, dominates the emission of THz in a ferromagnetic heterostructure. The measured THz radiation can be used for rigorous reconstruction of ultrafast magnetization process in the laser-excited magnetic material.
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© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Wentao Zhang, Pablo Maldonado, Zuanming Jin, Tom Seifert, Jacek Arabski, Guy Schmerber, Eric Beaurepaire, Mischa Bonn, Tobias Kampfrath, Peter Oppeneer, and Dmitry Turchinovich "Study of ultrafast magnetism by THz emission spectroscopy (Conference Presentation)", Proc. SPIE 11348, Terahertz Photonics, 113480W (31 March 2020); https://doi.org/10.1117/12.2554408
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