Open AccessDevelopment and optimization on spatiotemporal resolution of ultrafast electron diffraction
Author(s) -
Wenxi Liang,
Ping Zhu,
Xuan Wang,
Shouping Nie,
Zhang Zhong-Chao,
Jianming Cao,
Zheng-Ming Sheng,
Jie Zhang
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
ISSN - 1000-3290
DOI - 10.7498/aps.58.5539
Subject(s) - ultrashort pulse , ultrafast electron diffraction , picosecond , diffraction , temporal resolution , excitation , electron diffraction , electron , materials science , resolution (logic) , optics , physics , computer science , laser , nuclear physics , quantum mechanics , artificial intelligence
Ultrafast electron diffraction is a powerful technique for the measurement of transient structure at atomistic level and on ultrafast timescale. Here we report the development of the first such an ultrafast electron diffraction system in China. With careful design and after performing optimization of its spatiotemporal resolution, we are able to detect a sub-milli-ngstrom lattice spacing change with a sub-picosecond temporal resolution in an ultrafast heated Al film. This achievement offers great promise to conduct real-time measurements of transient structures in many dynamical processes that can be initiated by ultrafast optical excitation.