飞秒
衍射
激光器
超短脉冲
材料科学
极化(电化学)
光学
非平衡态热力学
超晶格
瞬态(计算机编程)
声子
物理
凝聚态物理
光电子学
化学
量子力学
物理化学
操作系统
计算机科学
作者
Chrıstoph Hauf,M. Woerner,Thomas Elsaesser
标识
DOI:10.1039/bk9781837671564-00126
摘要
Compact laser-driven sources of femtosecond hard X-ray pulses allow for ultrafast diffraction experiments on the laboratory scale. This chapter gives an account of X-ray source technologies and experimental diffraction methods. The strong potential of this approach for elucidating elementary structure-changing processes is illustrated with prototypical experimental results. A presentation of nonequilibrium phonon dynamics in bulk LiNbO3 and perovskite superlattices is complemented by an in-depth discussion of transient charge density maps and polarization dynamics in ferroelectrics, as observed in femtosecond powder diffraction experiments.
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