Open AccessInfluence of a damping parameter on helicity-independent all-optical switching
Author(s) -
Shihan Gao,
Runji Cai,
Wanjie Xiong,
Chudong Xu
Publication year - 2021
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.435160
Subject(s) - semiclassical physics , magnetization dynamics , ultrashort pulse , magnetization , helicity , physics , pulse (music) , pulse duration , fluence , switching time , kerr effect , optics , condensed matter physics , magnetic field , quantum mechanics , laser , quantum , optoelectronics , nonlinear system , detector
Ultrafast magnetization switching has aroused much interest in recent years. Due to the complicated physical mechanisms, helicity-independent all-optical switching (HI-AOS) still lacks comprehensive understanding. In this article, we revealed the influence of damping on HI-AOS based on the simulation of the semiclassical atomic spin dynamics model. The results suggested that the smaller damping not only contributes to the increase to the maximum required pulse duration and the pulse fluence threshold for switching but also slows down the rate of magnetization dynamics. Our simulation results could provide some theoretical foundation to explore the optimization parameters of HI-AOS.