Ultrafast Modulation of Polarization in Spintronic THz Emitters Enhanced by Field Induced Spin Reorientation Transition

• DOI: 10.1364/cleo_si.2023.sf2i.4
• Publication Date: 2023-07-27T12:09:53Z
• Authors: Geoffrey Lezier; Pierre Koleják; Jean-François Lampin; Kamil Postava; Mathias Vanwolleghem; Nicolas Tiercelin
• Keywords: [PHYS]Physics [physics]; [SPI]Engineering Sciences [physics]; 7. Clean energy

We demonstrate an efficient and simple modulation of the polarization in Spin-tronic Terahertz Emitters, by rapid switching magnetization using high-frequency magnetic field, enhanced field induced Spin Reorientation Transition (SRT). The instability layer at transition allows for a higher sensitivity magne-tization lower power frequencies up to 100kHz.