Time-Resolved Visualization of Laser-Induced Heating of Gold with MeV Ultrafast Electron Diffraction

作     者：朱鹏飞 傅费超 刘圣广 向导 张杰 曹建明 

作者机构：Key Laboratory for Laser Plasmas (Ministry of Education) Department of Physics and Astronomy Shanghai Jiao Tong University Shanghai 200240 Department of Physics and National High Magnetic Field Laboratory Florida State University Tallahassee Florida 32310 USA 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2014年第31卷第11期

页      面：111-114页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 11327902 and 11304199 

主　　题：Electron beams 

摘      要：Time-resolved electron diffraction employing MeV electron beams is demonstrated experimentally at the center for ultrafast diffraction and microscopy of Shanghai Jiao Tong University. A high-quality diffraction pattern is recorded by a single shot of electron pulse. Synchronization between the pump laser and the probe electron beam is achieved through measurement of electron deflection caused by the laser-induced plasmas in a metal tip. We study the ultrafast structural dynamics of the gold lattice excited by a femtosecond laser through tracing the change of Bragg peaks intensity at different time delays. It is expected that the combination of MeV ultrashort electron beams and femtoseeond laser pulses will open many new opportunities in the ultrafast and ultrasmall world.