SAMOP 2023 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 22: Poster II

Q 22.67: Poster

Tuesday, March 7, 2023, 16:30–19:00, Empore Lichthof

Creating auto-ponderomotive potentials for electron beam manipulation — •Franz Schmidt-Kaler, Michael Seidling, Robert Zimmermann, Nils Bode, and Peter Hommelhoff — Friedrich Alexander Universität Erlangen-Nürnberg (FAU), 91058 Erlangen

Advances in complex free electron beam manipulation are shown to be possible based on planar chips using electrostatic fields. In the co-moving frame of the electrons these static fields transform into alternating forces creating an engineered auto-ponderomotive potential. This confining pseudopotential resembles the one of a radiofrequency-driven Paul trap. Well-designed electrode layouts enable electron beam splitting and curved guiding, which we demonstrated. The applied electron energies range from a few eV to 1.7 keV (splitting) and 9.5 keV (guiding) permitting integration into standard scanning electron microscopes to allow entirely new electron control. Furthermore, we measured the first a-q stable parameter space demonstrating the similarity of our APE design's to Paul trap's potentials.