Polarization control of emitted THz waves using spintronic emitters with anisotropic magnetic layers & birefringence characterization of Quartz

We demonstrate that spintronic TeraHertz emitters using uni-axial anisotropic FeCo/TbCo 2 /FeCo ferromagnetic layers allow the polarization control of the THz emitted wave thanks to the Stoner-Wohlfarth coherent rotation of magnetization when submitted to a magnetic field along hard axis. The determination of birefringence parameters of a quartz half-wave plate is described as an application example.

Mots clés

birefringence cobalt alloys ferromagnetic materials iron alloys light polarisation magnetic anisotropy magnetic multilayers magnetoelectronics optical retarders quartz terahertz wave spectra terbium alloys

Domaines

Sciences de l'ingénieur [physics]

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IRMMW-THz rotation-quartz-Lezier-extended-Vauthor.pdf (429.08 Ko)

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https://hal.science/hal-03584687

Soumis le : vendredi 4 mars 2022-12:37:51

Dernière modification le : mardi 4 juin 2024-13:26:03

Archivage à long terme le : dimanche 5 juin 2022-19:05:32

Dates et versions

hal-03584687 , version 1 (04-03-2022)

Identifiants

HAL Id : hal-03584687 , version 1
DOI : 10.1109/IRMMW-THz50926.2021.9567537

Citer

Geoffrey Lezier, Pierre Kolejak, Jean-Francois Lampin, Kamil Postava, Mathias Vanwolleghem, et al.. Polarization control of emitted THz waves using spintronic emitters with anisotropic magnetic layers & birefringence characterization of Quartz. 2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz), Aug 2021, Chengdu, China. ⟨10.1109/IRMMW-THz50926.2021.9567537⟩. ⟨hal-03584687⟩

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