THz spintronic emitters with magnetoelectric control of the polarization and applications to polarimetry

Tiercelin, Nicolas; Lezier, Geoffrey; Koleják, Pierre; Lampin, Jean-Francois; Postava, Kamil; Vanwolleghem, Mathias

Document type :

Autre communication scientifique (congrès sans actes - poster - séminaire...): Communication dans un congrès avec actes: Conférence invitée

DOI :

10.1117/12.2597306

Title :

THz spintronic emitters with magnetoelectric control of the polarization and applications to polarimetry

Author(s) :

Tiercelin, Nicolas [Auteur]
Acoustique Impulsionnelle & Magnéto-Acoustique Non linéaire - Fluides, Interfaces Liquides & Micro-Systèmes - IEMN [AIMAN-FILMS - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Lezier, Geoffrey [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Koleják, Pierre [Auteur]
Technical University of Ostrava [Ostrava] [VSB]
Lampin, Jean-Francois [Auteur]
Photonique THz - IEMN [PHOTONIQUE THZ - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Postava, Kamil [Auteur]
Technical University of Ostrava [Ostrava] [VSB]
Vanwolleghem, Mathias [Auteur]
Photonique THz - IEMN [PHOTONIQUE THZ - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]

Conference title :

SPIE Nanoscience + Engineering, Spintronics XIV

City :

San Diego

Country :

Etats-Unis d'Amérique

Start date of the conference :

2021-08-01

Publisher :

SPIE

English keyword(s) :

Terahertz radiation
Polarization
Spintronics
Polarization control
Polarimetry
Fermium
Frequency modulation

HAL domain(s) :

Sciences de l'ingénieur [physics]/Optique / photonique
Sciences de l'ingénieur [physics]/Micro et nanotechnologies/Microélectronique

English abstract : [en]

We present a scheme to achieve coherent polarization rotation without multipolar or rotating external magnetic bias nor complex cascaded emitters, by exploiting artificially engineered strong uniaxial anisotropy in ...
Show more >We present a scheme to achieve coherent polarization rotation without multipolar or rotating external magnetic bias nor complex cascaded emitters, by exploiting artificially engineered strong uniaxial anisotropy in intermetallic heterostructures of rare-earth and transition metals. By replacing the FM layer of the spintronic emitter with a carefully designed FeCo/TbCo2/FeCo heterostructure, we demonstrated Stoner-Wolfarth-like coherent rotation of the THz polarization only by a unipolar variation of the strength of the hard axis field. In a second step we demonstrated the magnetoelectric control of the polarization direction. These results improve greatly the feasibility of fast polarization switchable integrated THz sources impacting practical applications such as ultrabroadband THz spectroscopic ellipsometry without rotating elements, or polarization modulated high speed wireless data communications, but also fundamental physical studies into ultrafast terahertz optospintronics.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

European Project :

novel SpiN-basEd BUilding bLocks for advanced teraHertz Applications

Collections :

Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL

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