关键词: 自由电子激光, 磁性表征, 超快过程

Abstract: As an emerging experimental method, free electron laser has the characteristics of high power, short pulse, and strong coherence. With wide applications in condensed matter physics research, it has received increasing attentions. In this article we present the research progress of free electron laser in condensed matter physics, especially its importance and potential in magnetism characterization and ultrafast magnetodynamics. We also briefly introduce the research results in phase transition physics and lattice dynamics.