Outline

Electron beams are used for examples in electron microscopy and electron-beam lithography, where high spatial resolution is required. By using state-of-the-art laser and electron-beam technologies, we control the temporal structure of an electron beam with ultimate attosecond resolution and apply the controlled electron beams for imaging and controlling ultrafast chemical reactions. We explore the atomic-scale dynamics of electrons in a material which is the initial step of most photochemical reactions.

Fields

Chemistry, Physics, Interdisciplinary Science and Engineering, Engineering

Keywords

Ultrashort electron beam, Electron beam imaging, Nonlinear optics, Attosecond science, Atomic collisions

Subjects

  • Attosecond control of electron beams
  • Ultrafast electron-beam imaging of chemical reactions
  • Control of collisional processes using coherent electron beams
  • Development of ultrashort and intense infrared laser pulses and their applications
Research image

Light-wave modulation of an electron beam

Selected Publications

  • Morimoto, Y., and Baum, P.: “Field-induced rocking curve effects in attosecond electron diffraction”, Phys. Rev. Lett. 132, 216902 (2024).
  • Morimoto, Y., and Madsen, L.B.: “Scattering of ultrashort electron wave packets: optical theorem, differential phase contrast and angular asymmetries”, New J. Phys. 26, 053012 (2024).
  • Morimoto, Y.: "Attosecond electron-beam technology: a review of recent progress”, Microscopy 72, 2-17 (2023).
  • Morimoto, Y., Shinohara, Y., Tani, M., Chen, B.H., Ishikawa, K.L., and Baum, P.:“Asymmetric single-cycle control of valence electron motion in polar chemical bonds”, Optica 8, 382 (2021).
  • Morimoto, Y., Hommelhoff, P., and Madsen, L.B.: “Coherent scattering of an optically-modulated electron beam by atoms”, Phys. Rev. A 103, 043110 (2021).

Achievements

Members

Name Position
Yuya Morimoto RIKEN Hakubi Team Leader
Yuichi Tachibana Special Postdoctoral Researcher
Yui Yamashita Technical Staff I

Access & Contact

2-1 Hirosawa, Wako, Saitama 351-0198 Japan