Influence of a damping parameter on helicity-independent all-optical switching

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. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Automated summary

This article investigates the influence of damping on helicity-independent all-optical switching (HI-AOS) through simulation using a semiclassical atomic spin dynamics model. The results show that smaller damping can affect the switching process and slow down the rate of magnetization dynamics. This study provides a theoretical foundation for exploring the optimization parameters of HI-AOS.