Title :

Optimized optical cavity for maximal enhancement of terahertz spintronic emission

Author(s) :

Kolejak, Pierre [Auteur]
Photonique THz - IEMN [PHOTONIQUE THZ - IEMN]
IT4Innovations - National Supercomputing Center [Ostrava]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Lezier, Geoffrey [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]
Postava, Kamil [Auteur]
IT4Innovations - National Supercomputing Center [Ostrava]
Lampin, Jean-Francois [Auteur]
Photonique THz - IEMN [PHOTONIQUE THZ - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
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]
Vanwolleghem, Mathias [Auteur]
Photonique THz - IEMN [PHOTONIQUE THZ - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]

Conference title :

2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz)

City :

Chengdu

Country :

Chine

Start date of the conference :

2021-08-29

Publisher :

IEEE

English keyword(s) :

ferromagnetic materials
infrared spectra
magnetic anisotropy
multilayers
optical pumping
photonic crystals
silicon compounds
spin dynamics
titanium compounds

HAL domain(s) :

Sciences de l'ingénieur [physics]

English abstract : [en]

Spintronic terahertz emitters are recently developed broadband sources for THz applications based on the ultrafast spin-diffusion in ferromagnetic/nonmagnetic ultra-thin multilayers. We present the enhancement of the ...
Show more >Spintronic terahertz emitters are recently developed broadband sources for THz applications based on the ultrafast spin-diffusion in ferromagnetic/nonmagnetic ultra-thin multilayers. We present the enhancement of the terahertz emission using the integration of an optimized SiO 2 /TiO 2 photonic crystal combined with our previously reported original architecture of a spintronic emitter with induced magnetic anisotropy. Layer thicknesses of the optical cavity are designed for maximal infrared pump absorption in the ferromagnetic layers to obtain intense terahertz emission. The improvement of the efficiency by factor four of terahertz emission is demonstrated compared to a spintronic emitter integrated with Bragg mirror and standard spintronic emitter.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