首页|Capturing the non-equilibrium state in light-matter-free-electron interactions through ultrafast transmission electron microscopy

Capturing the non-equilibrium state in light-matter-free-electron interactions through ultrafast transmission electron microscopy

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Ultrafast transmission electron microscope(UTEM)with the multimodality of time-resolved diffraction,imaging,and spectroscopy provides a unique platform to reveal the fundamental features associated with the interaction between free electrons and matter.In this review,we summarize the principles,instrumentation,and recent developments of the UTEM and its applications in capturing dynamic processes and non-equilibrium transient states.The combination of the transmission electron microscope with a femtosecond laser via the pump-probe method guarantees the high spatiotemporal resolution,allowing the investigation of the transient process in real,reciprocal and energy spaces.Ultrafast structural dynamics can be studied by diffraction and imaging methods,revealing the coherent acoustic phonon generation and photo-induced phase transition process.In the energy dimension,time-resolved electron energy-loss spectroscopy enables the examination of the intrinsic electronic dynamics of materials,while the photon-induced near-field electron microscopy extends the application of the UTEM to the imaging of optical near fields with high real-space resolution.It is noted that light-free-electron interactions have the ability to shape electron wave packets in both longitudinal and transverse directions,showing the potential application in the generation of attosecond electron pulses and vortex electron beams.

ultrafast transmission electron microscopynon-equilibrium structural dynamicsphoto-induced phase transitionfree-electron-photon interactions

汪文韬、孙帅帅、李俊、郑丁国、黄思远、田焕芳、杨槐馨、李建奇

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Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China

School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China

Yangtze River Delta Physics Research Center Co.,Ltd.,Liyang,Jiangsu 213300,China

Songshan Lake Materials Laboratory,Dongguan 523808,China

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Key Research and Development Program of ChinaGuangdong Major Scientific Research ProjectYouth Innovation Promotion Association of CASScientific Instrument Developing Project of the Chinese Academy of SciencesScientific Instrument Developing Project of the Chinese Academy of SciencesScientific Instrument Developing Project of the Chinese Academy of SciencesStrategic Priority Research Program(B)of the Chinese Academy of SciencesStrategic Priority Research Program(B)of the Chinese Academy of SciencesBeijing Municipal Science and Technology Major ProjectIOP Hundred Talents ProgramPostdoctoral Support Program of ChinaSynergetic Extreme Condition User Facility(SECUF)

U22A6005120744082021YFA13015022018KZDXM0612021009YJKYYQ20200055ZDKYYQ201700022017BA10XDB25000000XDB33010100Z201100001820006Y9K50512020M670501

2024

10.1088/1674-1056/ad0141

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(1)
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