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Investigation of Ultrafast Charge Carrier and Lattice Dynamics

When a material is driven out of an equilibrium state, fundamental interactions governing the material properties play roles in returning to the equilibrium state. The microscopic process of this recovery takes place on an ultrafast time scale far beyond the usual time resolution of usual detection methods. Thanks to the recent development of the ultrashort pulsed lasers, various ultrafast techniques are now available to investigate the ultrafast dynamics of materials. In this article, I briefly review the experiment techniques used to investigate ultrafast electronic and lattice dynamics.