All-optical nonlinear chiral ultrafast magnetization dynamics driven by circularly polarized magnetic fields

被引：4

作者：

Sanchez-Tejerina, Luis ^{[1
,2
,5
]}

Martin-Hernandez, Rodrigo ^{[1
]}

Yanes, Rocio ^{[3
,4
]}

Plaja, Luis ^{[1
,4
]}

Lopez-Diaz, Luis ^{[3
,4
]}

Hernandez-Garcia, Carlos ^{[1
,4
]}

机构：

[1] Univ Salamanca, Dept Fis Aplicada, Grp Invest Aplicac Laser & Foton, Salamanca, Spain

[2] Univ Valladolid, Dept Electr & Elect, Valladolid, Spain

[3] Univ Salamanca, Dept Fis Aplicada, Salamanca, Spain

[4] Univ Salamanca, Unidad Excelencia Luz & Mat Estructuradas LUMES, Salamanca, Spain

[5] Univ Salamanca, Dept Fis Aplicada, Grp Invest Aplicac Laser & Foton, E-37008 Salamanca, Spain

来源：

HIGH POWER LASER SCIENCE AND ENGINEERING | 2023年 / 11卷

基金：

欧洲研究理事会;

关键词：

chiral behavior; nonlinear dynamics; ultrafast dynamics; VECTOR BEAMS; PULSES; DEMAGNETIZATION; GENERATION;

D O I：

10.1017/hpl.2023.71

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Ultrafast laser pulses provide unique tools to manipulate magnetization dynamics at femtosecond timescales, where the interaction of the electric field usually dominates over the magnetic field. Recent proposals using structured laser beams have demonstrated the possibility to produce regions where intense oscillating magnetic fields are isolated from the electric field. In these conditions, we show that technologically feasible tesla-scale circularly polarized high-frequency magnetic fields induce purely precessional nonlinear magnetization dynamics. This fundamental result not only opens an avenue in the study of laser-induced ultrafast magnetization dynamics, but also sustains technological implications as a route to promote all-optical non-thermal magnetization dynamics both at shorter timescales - towards the sub-femtosecond regime - and at THz frequencies.

引用

页数：8