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

汪文韬 ¹孙帅帅 ²李俊 ²郑丁国 ²黄思远 ¹田焕芳 ²杨槐馨 ³李建奇⁴

扫码查看

作者信息

1. 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
2. Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China
3. 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
4. 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;Songshan Lake Materials Laboratory,Dongguan 523808,China
折叠

Abstract

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.

Key words

ultrafast transmission electron microscopy/non-equilibrium structural dynamics/photo-induced phase transition/free-electron-photon interactions

引用本文复制引用

基金项目

National Natural Science Foundation of China(U22A6005)

National Natural Science Foundation of China(12074408)

National Key Research and Development Program of China(2021YFA1301502)

Guangdong Major Scientific Research Project(2018KZDXM061)

Youth Innovation Promotion Association of CAS(2021009)

Scientific Instrument Developing Project of the Chinese Academy of Sciences(YJKYYQ20200055)

Scientific Instrument Developing Project of the Chinese Academy of Sciences(ZDKYYQ2017000)

Scientific Instrument Developing Project of the Chinese Academy of Sciences(22017BA10)

Strategic Priority Research Program(B)of the Chinese Academy of Sciences(XDB25000000)

Strategic Priority Research Program(B)of the Chinese Academy of Sciences(XDB33010100)

Beijing Municipal Science and Technology Major Project(Z201100001820006)

IOP Hundred Talents Program(Y9K5051)

Postdoctoral Support Program of China(2020M670501)

Synergetic Extreme Condition User Facility(SECUF)()

出版年

2024

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

参考文献量150

段落导航