Erlangen 2022 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 63: Matter Wave Optics

Q 63.4: Talk

Friday, March 18, 2022, 11:15–11:30, Q-H10

Chip-based manipulation of guided electrons with auto-ponderomotvie potentials — •Michael Seidling, Franz Schmidt-Kaler, and Peter Hommelhoff — Department Physik, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91058 Erlangen

Recent advances in free electron beam guiding and beam splitting for electrons from the eV to the keV range are reported [1, 2]. Electron beam guiding and splitting is based on auto-ponderomotive forces generated by the motion of charged particles through electrostatic electron optics on planar substrates. In the co-moving frame of the electron, the electrostatic fields transform into an alternating potential, and thus the electrons are subject to the same transverse restoring forces as in a conventional linear Paul trap driven with oscillating fields. The confinement of electrons in the two directions perpendicular to the direction of motion is determined by the electrodes* layout. In the future coherent electron beam splitting should be feasible using auto-ponderomotive potentials, enabling new coherent charged matter wave experiments. [1] Zimmermann, R., Seidling, M. & Hommelhoff, P. Charged particle guiding and beam splitting with auto-ponderomotive potentials on a chip. Nat Commun 12, 390 (2021). https://doi.org/10.1038/s41467-020-20592-4 [2] M. Seidling, R. Zimmermann, and P. Hommelhoff, "Chip-based electrostatic beam splitting of guided kiloelectron volt electrons", Appl. Phys. Lett. 118, 034101 (2021) https://doi.org/10.1063/5.0030049