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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

1. Attosecond control of electron beams
2. Ultrafast electron-beam imaging of chemical reactions
3. Control of collisional processes using coherent electron beams
4. Development of ultrashort and intense infrared laser pulses and their applications

Selected Publications

1. Morimoto, Y., Shinohara, Y., Ishikawa, K.L., and Hommelhoff, P.: “Atomic real-space perspective of light-field-driven currents in graphene”, New J. Phys. 24, 033051 (2022).
2. 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).
3. Morimoto, Y., Hommelhoff, P., and Madsen, L.B.: “Coherent scattering of an optically-modulated electron beam by atoms”, Phys. Rev. A 103, 043110 (2021).
4. Morimoto, Y., and Baum, P.: “Single-Cycle Optical Control of Beam Electrons”, Phys. Rev. Lett. 125, 193202 (2020).
5. Morimoto, Y., and Baum, P.: “Diffraction and microscopy with attosecond electron pulse trains”, Nat. Phys. 14, 252 (2018).

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