THz-Enhanced DC Ultrafast Electron Diffractometer  

作　　者：Dongfang Zhang Tobias Kroh Felix Ritzkowsky Timm Rohwer Moein Fakhari Huseyin Cankaya Anne-Laure Calendron Nicholas H.Matlis Franz X.Kärtner 

机构地区：[1]Center for Free-Electron Laser Science,Deutsches Elektronen Synchrotron,Notkestrasse 85,22607 Hamburg,Germany [2]Collaborative Innovation Center for IFSA,School of Physics and Astronomy,Shanghai Jiao Tong University,200240 Shanghai,China [3]Department of Physics and The Hamburg Centre for Ultrafast Imaging,Universität Hamburg,Luruper Chaussee 149,22761 Hamburg,Germany

出　　处：《Ultrafast Science》2021年第1期61-67,共7页超快科学（英文）

基　　金：supported by the European Research Council under the European Union’s Seventh Framework Programme(FP7/2007-2013)through the Synergy Grant AXSIS(609920);Project KA908-12/1 of the Deutsche Forschungsgemeinschaft,the Cluster of Excellence“CUI:Advanced Imaging of Matter”of the Deutsche Forschungsgemeinschaft(DFG)—EXC 2056—project ID 390715994;the Accelerator on a Chip Program(ACHIP)funded by the Gordon and Betty Moore Foundation(GBMF4744).

摘　　要：Terahertz-(THz-)based electron manipulation has recently been shown to hold tremendous promise as a technology for manipulating and driving the next generation of compact ultrafast electron sources.Here,we demonstrate an ultrafast electron diffractometer with THz-driven pulse compression.The electron bunches from a conventional DC gun are compressed by a factor of 10 and reach a duration of~180 fs(FWHM)with 10,000 electrons/pulse at a 1 kHz repetition rate.The resulting ultrafast electron source is used in a proof-of-principle experiment to probe the photoinduced dynamics of single-crystal silicon.The THz-compressed electron beams produce high-quality diffraction patterns and enable the observation of the ultrafast structural dynamics with improved time resolution.These results validate the maturity of THz-driven ultrafast electron sources for use in precision applications.

关 键 词：PULSE ELECTRON REPETITION 

分 类 号：TN2[电子电信—物理电子学]